Natchimuthuk Gopalswamy

Natchimuthuk Gopalswamy

  • RSCH AST, SOLAR & SOLAR TRSTRL STD
  • 301.286.5885 | 301.286.1433
  • NASA/GSFC
  • Mail Code: 671
  • Greenbelt , MD 20771
  • Employer: NASA
  • Brief Bio

      Dr. Nat Gopalswamy is a staff scientist at the Heliophysics Division of NASA’s Goddard Space Flight Center, Greenbelt, Maryland. He holds the position of Astrophysicist in the Solar Physics Laboratory. Before joining NASA, he had held the positions of Research Professor at the Catholic University of America and Associate Research Scientist position at the University of Maryland, College Park. He was a Senior Resident Research Associate of the National Research Council at the Goddard Space Flight Center (1998-2000). He was briefly (1983-1985) the Resident Scientist of the Kodaikanal Observatory. Dr. Gopalswamy received his PhD from the Indian Institute of Science, Bangalore (1982) and did his post-doctoral training at the University of Maryland, College Park (1985). He was conferred with a Doctor Honoris Causa by the Bulgarian Academy of Sciences in 2019. Dr. Gopalswamy is an AGU Fellow.

     Over the past two decades, Dr. Gopalswamy has been engaged in solving problems in solar and solar terrestrial physics using data from various large radio telescopes and space missions. In particular, he is interested in coronal mass ejections and their impact on Earth and on the heliosphere in the form of magnetic storms and particle radiation. He has considerable expertise in the analysis of multi-wavelength data (X-ray, EUV, optical and radio). In the recent years, he has been extensively involved in the analys is of Yohkoh, SOHO, STEREO, SDO, Wind and ACE data in conjunction with radio and optical images obtained by ground based instruments. He is a member of the SOHO and STEREO teams engaged in studying coronal mass ejections using coronagraph and in-situ data from Wind and ACE. He has authored or co-authored more than 450 papers.

     Some of the notable discoveries of Dr. Gopalswamy: Radio CME (1992), Umbral oscillations in microwaves (1993), transient microwave brightenings (1995), three-part CME using non-coronagraphic observations (1996), Effective interplanetary acceleration of CMEs (2000), CME Cannibalism (2001), High-latitude CMEs and solar polarity reversal (2003), Effect of CME interaction on SEP intensity (2004), Empirical shock arrival model (2005), Geoeffectiveness of halo CMEs (2007), High-speed radio-quiet CMEs (2008), CME Deflection by coronal holes (2009), Radio-quiet interplanetary shocks (2010), Heliospheric magnetic field from white-light shock structure (2011), Relation between polar magnetic field strength and microwave brightness (2012), Latitudinal connectivity in GLE events (2013), Anomalous expansion of CMEs in Solar Cycle 24 (2014), The peculiar behavior of halo CMEs (2015), Hierarchical relationship between CME kinematics and spectral hardness of SEP events (2016), Reconstruction of CME flux ropes from eruption data (2018), Relation between durations of sustained gamma-ray emission and interplanetary type II radio bursts from the Sun (2018), Correlation between CME speed and gamma-ray fluence (2019), Spatially-extended nature of solar gamma-ray sources (2020), Heliospheric state revealed by height of halo CME formation (2020). First measurement of temperature and flow speed of electrons in the solar wind formation region using coronagraphy (2021).


    Positions/Employment

    1/2002 - Present

    Astrophysicist

    NASA , Goddard Space Flight Center
    1998 - 2000

    Senior Research Associate, National Research Council, National Academy of Sciences

    National Academy of Sciences, NASA Goddard Space Flight Center

    Worked on the relation between coronal mass ejections and solar Radio bursts

    1997 - 1/2002

    Research Professor

    The Catholic University of America, NASA Goddard Space Flight Center
    1993 - 1997

    Associate Research Scientist

    University of Maryland, College Park

    Worked on solar radio physics

    1989 - 1993

    Assistant Research Scientist

    University of Maryland , College Park

    worked on radio bursts and coronal mass ejections

    1985 - 1989

    Research Associate

    University of Maryland, College Park

    Worked on data from the Clark Lake Multi-frequency radioheliograph

    1984 - 1985

    Resident Scientist

    Indian Institute of Astrophysics, Kodaikanal Solar Observatory

    Administered the operations of the Kodaikanal Solar Observatory


    1982 - 1984

    Visiting Scientist

    Indian Institute of Astrophysics, Bengaluru

    Worked low frequency radio physics of the Sun

    Education

    ·      Ph.D. (Physics) Indian Institute of Science (1982)

    ·      M.Sc. (Physics), PSG College of Arts and Science, University of Madras (1977)

    ·      B.Sc. (Physics), PSG College of Arts and Science, University of Madras (1975)

    Professional Societies

    American Geophysical Union (AGU), 1986 - Present
    Member
    American Astronomical Society (AAS), 1986 - Present
    member
    • Asia Oceania Geosciences Society (AOGS), 2004 - Present
    Member, Distinguished Lecturer, Session convener
    • Astronomical Society of India (ASI), 1983 - Present
    Life Member
    • International Astronomical Union (IAU), 1985 - Present
    Member, commission chair
    • Japan Geophysical Union (JpGU), 2011 - Present
    member

    Awards

    ·      G. Ramaswamy Naidu Memorial Prize, University of Madras, 1977

    ·      Prof. P. E. Subramani Ayyar Commemoration Medal, University of Madras, 1977

    ·      Dr. K. S. Krishnan Gold Medal, University of Madras, 1977

    ·      Dr. K.S. Krishnan Memorial Prize, University of Madras, 1977

    ·      Jagirdar of Arni Medal, University of Madras, 1977

    ·      Fellow of the Science and Technology Agency of Japan, 1996

    ·      Senior Research Associate, US National Academy of Sciences 1998 – 2000

    ·      NASA GSFC NATIONAL RESOURCE Group Achievement Award, 2000

    ·      NASA GSFC Solar System Exploration Division Peer Award, 2006

    ·      NASA Goddard Space Flight Center Special Act Award in recognition of superior service, 2006

    ·      NASA GSFC New Business Capture Award, 2006

    ·      Robert H. Goddard Honor Award for Science 2008

    ·      AOGS Distinguished Lecturer, 2010

    ·      NASA GSFC Heliophysics Division Peer Award, 2012

    ·      NASA Outstanding Leadership Medal, 2013

    ·      American Geophysical Union Fellow 2016

    ·      NASA’s John C. Lindsay Memorial Award for Space Science 2017

    ·      AGU/SPA Richard Carrington Award 2019

    ·      Doctor Honoris Causa, Bulgarian Academy of Sciences, 2019

    . Lifetime achievement award, Elavenil-Indian Science and Technology Association, 2021

    ·      NASA Group Achievement Award – BITSE mission, 2022

    Professional Service

    ·      Member, NASA’s Living with a Star (LWS) Science Definition Team (2003)

    ·      Organizer, Coordinated Data Analysis Workshops (1998 – present)

    ·      Director, CDAW Data Center (2002 – present)

    ·      Associate editor of Journal of Geophysical Research (Space Physics) (2000-2006)

    ·      Associate editor of Geophysical Research Letters (2007-2010)

    ·      Scientific Editor of Sun and Geosphere (2006 – present)

    ·      Workshop Coordinator and Steering Committee Member of the NSF SHINE program (2003-2005)

    ·      Member of NASA’s Sun-Solar System Connection Roadmap committee (2005)

    ·      International Coordinator, International Heliophysical Year (IHY) 2007 program (2002-2009)

    ·      Director of International Coordination, International Space Weather Initiative (2009-2013)

    ·      Executive Director, International Space Weather Initiative (2013-present)

    ·      Member of the Organizing Committee of IAU Commission 10 (1997-2009)

    ·      Member of the Organizing Committee of IAU Commission 49 (2006-2009)

    ·      Bureau Member, Scientific Committee on Solar Terrestrial Physics (SCOSTEP) (2006-2011)

    ·      President of IAU commission 49 (2009-2012)

    ·      Leader of NASA outreach team to Melaka Planetarium (2010)

    ·      Leader of NASA outreach team to Coimbatore Space Festival (2012)

    ·      Member, NASA’s Living with a Star (LWS) Steering Committee (2013)

    ·      President, SCOSTEP (2011-2019)

    . Past President, SCOSTEP (2019-)

    ·      Delegate to the United Nations Committee On Peaceful Uses of Outer Space (2012 - 2019)

    ·      Vice chair of COSPAR Panel on Space Weather (2021 - )

    . U.S. National Adherent Representative to SCOSTEP (2021-)

    ·      Served on numerous review panels to select proposals for federal funding

    ·      Served as convener or co-convener of numerous sessions at the AGU, IAU, AOGS, and COSPAR assemblies

    ·      Participated in the external review of international research institutions

    ·      Directed several International Space Science Schools for graduate students and postdocs since 2007 in Brazil, China, India, Slovakia, Egypt, Ethiopia, Nigeria, Indonesia, Kenya, Peru, and Azerbaijan

    ·      Organized several Space Weather workshops since 2005 in collaboration with the United Nations Office of Outer Space Affairs (UNOOSA) to promote deployment of low-cost space weather instruments in developing countries.

    ·      Conducted three COSPAR Capacity Building workshops in solar terrestrial science (2018-2020) that trained scores of students from developing countries in utilizing space data publicly available from past and current space missions.

    Publications

    Refereed

    Ding, Z., G. Li, R. W. Ebert, et al. M. A. Dayeh, A. S. Fe‐Dueñas, M. Desai, H. Xie, N. Gopalswamy, and A. Bruno. 2022. "Modeling the East‐West Asymmetry of Energetic Particle Fluence in Large Solar Energetic Particle Events Using the iPATH Model." Journal of Geophysical Research: Space Physics, 127 (6): e2022JA030343 [10.1029/2022ja030343]

    Gopalswamy, N., P. Makela, S. Yashiro, S. Akiyama, and H. Xie. 2022. "The Relation between Type III Radio Storms and CIR Energetic Particles." 2022 3rd URSI Atlantic and Asia Pacific Radio Science Meeting (AT-AP-RASC), [10.23919/at-ap-rasc54737.2022.9814336]

    Gopalswamy, N., S. Akiyama, P. Makela, S. Yashiro, and H. Xie. 2022. "Can Type III Radio Storms be a Source of Seed Particles to Shock Acceleration?" 2022 3rd URSI Atlantic and Asia Pacific Radio Science Meeting (AT-AP-RASC), [10.23919/at-ap-rasc54737.2022.9814233]

    Michalek, G., N. Gopalswamy, and S. Yashiro. 2022. "Study of the Mass-loss Rate from the Sun." The Astrophysical Journal, 930 (1): 74 [10.3847/1538-4357/ac4fcb]

    Swarnalingam, N., D. L. Wu, and N. Gopalswamy. 2022. "Interhemispheric Asymmetries in Ionospheric Electron Density Responses During Geomagnetic Storms: A Study Using Space‐Based and Ground‐Based GNSS and AMPERE Observations." Journal of Geophysical Research: Space Physics, 127 (5): [10.1029/2021ja030247]

    Gopalswamy, N., P. Mäkelä, and S. Yashiro. 2022. "PARTICLE ACCELERATION AND TRANSPORT AT THE SUN INFERRED FROM FERMI/LAT OBSERVATIONS OF > 100 MEV GAMMA-RAYS." 18th Annual Meeting of the Asia Oceania Geosciences Society, World Scientific Publishing Company, 189-191 [10.1142/9789811260100_0064]

    Kooi, J. E., D. B. Wexler, E. A. Jensen, et al. M. N. Kenny, T. Nieves-Chinchilla, L. B. Wilson, B. E. Wood, L. K. Jian, S. F. Fung, A. Pevtsov, N. Gopalswamy, and W. B. Manchester. 2022. "Modern Faraday Rotation Studies to Probe the Solar Wind." Frontiers in Astronomy and Space Sciences, 9: id 841866 [10.3389/fspas.2022.841866]

    Vemareddy, P., P. Démoulin, K. S. Raja, et al. J. Zhang, N. Gopalswamy, and N. Vasantharaju. 2022. "Eruption of the EUV Hot Channel from the Solar Limb and Associated Moving Type IV Radio Burst." The Astrophysical Journal, 927 (1): 108 [10.3847/1538-4357/ac4dfe]

    Michalek, G., N. Gopalswamy, and S. Yashiro. 2022. "Periodic Oscillations in LASCO Coronal Mass Ejection Speeds: Space Seismology." The Astrophysical Journal Letters, 927 (1): L16 [10.3847/2041-8213/ac54b0]

    Gopalswamy, N., P. Mäkelä, S. Yashiro, S. Akiyama, and H. Xie. 2022. "Solar activity and space weather." Journal of Physics: Conference Series, 2214 (1): 012021 [10.1088/1742-6596/2214/1/012021]

    Suresh, K., N. Gopalswamy, and A. Shanmugaraju. 2022. "Arrival Time Estimates of Earth-Directed CME-Driven Shocks." Solar Physics, 297 (1): 3 [10.1007/s11207-021-01914-1]

    Daglis, I. A., L. C. Chang, S. Dasso, et al. N. Gopalswamy, O. V. Khabarova, E. Kilpua, R. Lopez, D. Marsh, K. Matthes, D. Nandy, A. Seppälä, K. Shiokawa, R. Thiéblemont, and Q. Zong. 2021. "Predictability of variable solar–terrestrial coupling." Annales Geophysicae, 39 (6): 1013-1035 [10.5194/angeo-39-1013-2021]

    Xie, H., N. Gopalswamy, and S. Akiyama. 2021. "The Structural Connection between Coronal Mass Ejection Flux Ropes near the Sun and at 1 au." The Astrophysical Journal, 922 (1): 64 [10.3847/1538-4357/ac23cc]

    Burud, D. S., R. Jain, A. K. Awasthi, et al. S. Chaudhari, S. C. Tripathy, N. Gopalswamy, P. Chamadia, S. C. Kaushik, and R. Vhatkar. 2021. "Spotless days and geomagnetic index as the predictors of solar cycle 25." Research in Astronomy and Astrophysics, 21 (9): 215 [10.1088/1674-4527/21/9/215]

    Zhang, J., M. Temmer, N. Gopalswamy, et al. O. Malandraki, N. V. Nitta, S. Patsourakos, F. Shen, B. Vršnak, Y. Wang, D. Webb, M. I. Desai, K. Dissauer, N. Dresing, M. Dumbović, X. Feng, S. G. Heinemann, M. Laurenza, N. Lugaz, and B. Zhuang. 2021. "Earth-affecting solar transients: a review of progresses in solar cycle 24." Progress in Earth and Planetary Science, 8 (1): 56 [10.1186/s40645-021-00426-7]

    Shukure, N. T., S. B. Tessema, and N. Gopalswamy. 2021. "Total Solar Irradiance Variability on the Evolutionary Timescale and its Impact on the Earth’s Mean Surface Temperature." The Astrophysical Journal, 917 (2): 86 [10.3847/1538-4357/ac0894]

    Gopalswamy, N., S. Yashiro, P. Mäkelä, H. Xie, and S. Akiyama. 2021. "The Common Origin of High-energy Protons in Solar Energetic Particle Events and Sustained Gamma-Ray Emission from the Sun." The Astrophysical Journal, 915 (2): 82 [10.3847/1538-4357/ac004f]

    Wilson, L. B., A. L. Brosius, N. Gopalswamy, et al. T. Nieves‐Chinchilla, A. Szabo, K. Hurley, T. Phan, J. C. Kasper, N. Lugaz, I. G. Richardson, C. H. Chen, D. Verscharen, R. T. Wicks, and J. M. TenBarge. 2021. "A Quarter Century of Wind Spacecraft Discoveries." Reviews of Geophysics, 59 (2): e2020RG000714 [10.1029/2020rg000714]

    Pant, V., S. Majumdar, R. Patel, et al. A. Chauhan, D. Banerjee, and N. Gopalswamy. 2021. "Investigating Width Distribution of Slow and Fast CMEs in Solar Cycles 23 and 24." Frontiers in Astronomy and Space Sciences, 8: [10.3389/fspas.2021.634358]

    Majumdar, S., S. P. Tadepalli, S. S. Maity, et al. K. Deshpande, A. Kumari, R. Patel, and N. Gopalswamy. 2021. "Imaging and Spectral Observations of a Type-II Radio Burst Revealing the Section of the CME-Driven Shock That Accelerates Electrons." Solar Physics, 296 (4): 62 [10.1007/s11207-021-01810-8]

    Shukure, N. T., S. B. Tessema, and N. Gopalswamy. 2021. "On the Connection between Solar Surface Magnetic Flux and the Total Solar Irradiance." The Astrophysical Journal, 907 (1): 39 [10.3847/1538-4357/abcbf3]

    Gopalswamy, N., J. Newmark, S. Yashiro, et al. P. Mäkelä, N. Reginald, N. Thakur, Q. Gong, Y.-H. Kim, K.-S. Cho, S.-H. Choi, J.-H. Baek, S.-C. Bong, H.-S. Yang, J.-Y. Park, J.-H. Kim, Y.-D. Park, J.-O. Lee, R.-S. Kim, and E.-K. Lim. 2021. "The Balloon-Borne Investigation of Temperature and Speed of Electrons in the Corona (BITSE): Mission Description and Preliminary Results." Solar Physics, 296 (1): 15 [10.1007/s11207-020-01751-8]

    Umuhire, A. C., N. Gopalswamy, J. Uwamahoro, et al. S. Akiyama, S. Yashiro, and P. Mäkelä. 2021. "Properties of High-Frequency Type II Radio Bursts and Their Relation to the Associated Coronal Mass Ejections." Solar Physics, 296 (1): 27 [10.1007/s11207-020-01743-8]

    Dagnew, F. K., N. Gopalswamy, S. B. Tessema, et al. S. Akiyama, S. Yashiro, and T. Y. Tesfu. 2020. "Intercycle and Intracycle Variation of Halo CME Rate Obtained from SOHO/LASCO Observations." The Astrophysical Journal, 903 (2): 118 [10.3847/1538-4357/abb887]

    Rodríguez-Pacheco, J., R. F. Wimmer-Schweingruber, G. M. Mason, et al. G. C. Ho, S. Sánchez-Prieto, M. Prieto, C. Martín, H. Seifert, G. B. Andrews, S. R. Kulkarni, L. Panitzsch, S. Boden, S. I. Böttcher, I. Cernuda, R. Elftmann, F. Espinosa Lara, R. Gómez-Herrero, C. Terasa, J. Almena, S. Begley, E. Böhm, J. J. Blanco, W. Boogaerts, A. Carrasco, R. Castillo, A. da Silva Fariña, V. de Manuel González, C. Drews, A. R. Dupont, S. Eldrum, C. Gordillo, O. Gutiérrez, D. K. Haggerty, J. R. Hayes, B. Heber, M. E. Hill, M. Jüngling, S. Kerem, V. Knierim, J. Köhler, S. Kolbe, A. Kulemzin, D. Lario, W. J. Lees, S. Liang, A. Martínez Hellín, D. Meziat, A. Montalvo, K. S. Nelson, P. Parra, R. Paspirgilis, A. Ravanbakhsh, M. Richards, O. Rodríguez-Polo, A. Russu, I. Sánchez, C. E. Schlemm, B. Schuster, L. Seimetz, J. Steinhagen, J. Tammen, K. Tyagi, T. Varela, M. Yedla, J. Yu, N. Agueda, A. Aran, T. S. Horbury, B. Klecker, K.-L. Klein, E. Kontar, S. Krucker, M. Maksimovic, O. Malandraki, C. J. Owen, D. Pacheco, B. Sanahuja, R. Vainio, J. J. Connell, S. Dalla, W. Dröge, O. Gevin, N. Gopalswamy, Y. Y. Kartavykh, K. Kudela, O. Limousin, P. Makela, G. Mann, H. Önel, A. Posner, J. M. Ryan, J. Soucek, S. Hofmeister, N. Vilmer, A. P. Walsh, L. Wang, M. E. Wiedenbeck, K. Wirth, and Q. Zong. 2020. "The Energetic Particle Detector." Astronomy & Astrophysics, 642: A7 [10.1051/0004-6361/201935287]

    Wilson, L. B., A. Brosius, N. Gopalswamy, et al. T. Nieves-Chinchilla, A. Szabo, K. C. Hurley, T.-D. Phan, J. C. Kasper, I. G. Richardson, N. Lugaz, C. Chen, D. Verscharen, R. T. Wicks, and J. M. TenBarge. 2020. "A Quarter Century of Wind Spacecraft Discoveries." Reviews of Geophysics, (Submitted) [Full Text (Link)] [10.1002/essoar.10504309.1]

    Yashiro, S., N. Gopalswamy, S. Akiyama, and P. Mӓkelӓ. 2020. "A catalog of prominence eruptions detected automatically in the SDO/AIA 304 Å images." Journal of Atmospheric and Solar-Terrestrial Physics, 205: 105324 [10.1016/j.jastp.2020.105324]

    Gopalswamy, N., P. Makela, S. Yashiro, and S. Akiyama. 2020. "Diffuse Interplanetary Radio Emission from a Polar Coronal Mass Ejection." 2020 XXXIIIrd General Assembly and Scientific Symposium of the International Union of Radio Science, [10.23919/ursigass49373.2020.9232000]

    Gopalswamy, N., P. Makela, and S. Yashiro. 2020. "A Weak Fermi Gamma-ray Event Associated with a Halo CME and a Type II Radio Burst." 2020 XXXIIIrd General Assembly and Scientific Symposium of the International Union of Radio Science, 1-4 [10.23919/ursigass49373.2020.9232363]

    Gopalswamy, N., S. Akiyama, and S. Yashiro. 2020. "The State of the Heliosphere Revealed by Limb-halo Coronal Mass Ejections in Solar Cycles 23 and 24." The Astrophysical Journal Letters, 897 (1): L1 [10.3847/2041-8213/ab9b7b]

    Singh, T., M. S. Yalim, N. V. Pogorelov, and N. Gopalswamy. 2020. "A Modified Spheromak Model Suitable for Coronal Mass Ejection Simulations." The Astrophysical Journal, 894 (1): 49 [10.3847/1538-4357/ab845f]

    Gopalswamy, N. 2020. "Positron Processes in the Sun." Atoms, 8 (2): 14 [10.3390/atoms8020014]

    Luhmann, J. G., N. Gopalswamy, L. K. Jian, and N. Lugaz. 2020. "ICME Evolution in the Inner Heliosphere." Solar Physics, 295 (4): 61 [10.1007/s11207-020-01624-0]

    Gopalswamy, N., P. Mäkelä, and S. Yashiro. 2020. "A Catalog of Type II radio bursts observed by Wind/WAVES and their Statistical Properties." Sun and Geosphere, 14 (2): 111-121 [10.31401/sungeo.2019.02.03]

    Dagnew, F., N. Gopalswamy, S. Tassema, et al. A. Umuhire, S. Yashiro, P. Mäkelä, and H. Xie. 2020. "The Shock-Driving Capability of a CME Inferred from Multiwavelength Observations." [10.31401/sungeo.2019.02.02]

    Lara, A., N. Gopalswamy, T. Niembro, R. Pérez-Enríquez, and S. Yashiro. 2020. "Space, time and velocity association of successive coronal mass ejections." Astronomy & Astrophysics, 635: A112 [10.1051/0004-6361/201936016]

    Gopalswamy, N., P. Mäkelä, S. Yashiro, et al. S. Akiyama, H. Xie, and N. Thakur. 2020. "Source of Energetic Protons in the 2014 September 1 Sustained Gamma-ray Emission Event." Solar Physics, 295 (2): 18 [10.1007/s11207-020-1590-8]

    Sindhuja, G., and N. Gopalswamy. 2020. "A Study of the Observational Properties of Coronal Mass Ejection Flux Ropes near the Sun." The Astrophysical Journal, 889 (2): 104 [10.3847/1538-4357/ab620f]

    Sarkar, R., N. Gopalswamy, and N. Srivastava. 2020. "An Observationally Constrained Analytical Model for Predicting the Magnetic Field Vectors of Interplanetary Coronal Mass Ejections at 1 au." The Astrophysical Journal, 888 (2): 121 [10.3847/1538-4357/ab5fd7]

    Gopalswamy, N., S. Yashiro-Akiyama, P. A. Makela, and S. Yashiro. 2020. "Diffuse Interplanetary Radio Emission: Shock Emission or a Type III Storm?" URSI Radio Science Letters, 2: 1-5 [10.46620/20-0049]

    Gopalswamy, N., P. Mäkelä, S. Yashiro, et al. A. Lara, S. Akiyama, and H. Xie. 2019. "On the Shock Source of Sustained Gamma-Ray Emission from the Sun." Journal of Physics: Conference Series, 1332 (1): 012004 [10.1088/1742-6596/1332/1/012004]

    Krupar, V., J. Magdalenić, J. P. Eastwood, et al. N. Gopalswamy, O. Kruparova, A. Szabo, and F. Němec. 2019. "Statistical Survey of Coronal Mass Ejections and Interplanetary Type II Bursts." The Astrophysical Journal, 882 (2): 92 [10.3847/1538-4357/ab3345]

    Kahler, S. W., A. G. Ling, and N. Gopalswamy. 2019. "Are Solar Energetic Particle Events and Type II Bursts Associated with Fast and Narrow Coronal Mass Ejections?" Solar Physics, 294 (9): 134 [10.1007/s11207-019-1518-3]

    Kumari, A., R. Ramesh, C. Kathiravan, T. J. Wang, and N. Gopalswamy. 2019. "Direct Estimates of the Solar Coronal Magnetic Field Using Contemporaneous Extreme-ultraviolet, Radio, and White-light Observations." The Astrophysical Journal, 881 (1): 24 [10.3847/1538-4357/ab2adf]

    Xie, H., O. C. St. Cyr, P. Mäkelä, and N. Gopalswamy. 2019. "Statistical Study on Multispacecraft Widespread Solar Energetic Particle Events During Solar Cycle 24." Journal of Geophysical Research: Space Physics, 124 (8): 6384-6402 [10.1029/2019ja026832]

    Airapetian, V. S., R. Barnes, O. Cohen, et al. G. A. Collinson, W. C. Danchi, C. F. Dong, A. D. Del Genio, K. France, K. Garcia-Sage, A. Glocer, N. Gopalswamy, J. L. Grenfell, G. Gronoff, M. Güdel, K. Herbst, W. G. Henning, C. H. Jackman, M. Jin, C. P. Johnstone, L. Kaltenegger, C. D. Kay, K. Kobayashi, W. Kuang, G. Li, B. J. Lynch, T. Lüftinger, J. G. Luhmann, H. Maehara, M. G. Mlynczak, Y. Notsu, R. A. Osten, R. M. Ramirez, S. Rugheimer, M. Scheucher, J. E. Schlieder, K. Shibata, C. Sousa-Silva, V. Stamenković, R. J. Strangeway, A. V. Usmanov, P. Vergados, O. P. Verkhoglyadova, A. A. Vidotto, M. Voytek, M. J. Way, G. P. Zank, and Y. Yamashiki. 2019. "Impact of space weather on climate and habitability of terrestrial-type exoplanets." International Journal of Astrobiology, 19 (2): 136-194 [10.1017/s1473550419000132]

    Michalek, G., N. Gopalswamy, and S. Yashiro. 2019. "On the Coronal Mass Ejection Detection Rate during Solar Cycles 23 and 24." The Astrophysical Journal, 880 (1): 51 [10.3847/1538-4357/ab26a7]

    Aschwanden, M. J., and N. Gopalswamy. 2019. "Global Energetics of Solar Flares. VII. Aerodynamic Drag in Coronal Mass Ejections." The Astrophysical Journal, 877 (2): 149 [10.3847/1538-4357/ab1b39]

    Holappa, L., N. Gopalswamy, and K. Mursula. 2019. "Explicit IMF B y ‐Effect Maximizes at Subauroral Latitudes (Dedicated to the Memory of Eigil Friis‐Christensen)." Journal of Geophysical Research: Space Physics, 2018JA026285 [10.1029/2018ja026285]

    Singh, T., M. S. Yalim, N. V. Pogorelov, and N. Gopalswamy. 2019. "Simulating Solar Coronal Mass Ejections Constrained by Observations of Their Speed and Poloidal Flux." The Astrophysical Journal, 875 (2): L17 [10.3847/2041-8213/ab14e9]

    Gopalswamy, N., P. Makela, S. Yashiro, et al. A. Lara, H. Xie, S. Akiyama, and R. J. MacDowall. 2019. "Fermi, Wind, and SOHO Observations of Sustained Gamma-Ray Emission from the Sun." 2019 URSI Asia-Pacific Radio Science Conference (AP-RASC), [10.23919/ursiap-rasc.2019.8738168]

    Gopalswamy, N., and P. Makela. 2019. "Properties of DH Type II Radio Bursts and Their Space Weather Implications." 2019 URSI Asia-Pacific Radio Science Conference (AP-RASC), [10.23919/ursiap-rasc.2019.8738714]

    Gopalswamy, N., P. Mäkelä, S. Yashiro, et al. A. Lara, H. Xie, S. Akiyama, and R. J. MacDowall. 2018. "Interplanetary Type II Radio Bursts from Wind /WAVES and Sustained Gamma-Ray Emission from Fermi /LAT: Evidence for Shock Source." The Astrophysical Journal, 868 (2): L19 [10.3847/2041-8213/aaef36]

    Bronarska, K., M. S. Wheatland, N. Gopalswamy, and G. Michalek. 2018. "Very narrow coronal mass ejections producing solar energetic particles." Astronomy & Astrophysics, 619: A34 [10.1051/0004-6361/201833237]

    Gopalswamy, N., P. Mӓkelӓ, S. Akiyama, et al. S. Yashiro, H. Xie, and N. Thakur. 2018. "Sun-to-earth propagation of the 2015 June 21 coronal mass ejection revealed by optical, EUV, and radio observations." Journal of Atmospheric and Solar-Terrestrial Physics, 179: 225-238 [10.1016/j.jastp.2018.07.013]

    Gopalswamy, N., S. Akiyama, S. Yashiro, and H. Xie. 2018. "Coronal flux ropes and their interplanetary counterparts." Journal of Atmospheric and Solar-Terrestrial Physics, 180: 35-45 [10.1016/j.jastp.2017.06.004]

    Mäkelä, P., N. Gopalswamy, and S. Akiyama. 2018. "Direction-finding Analysis of the 2012 July 6 Type II Solar Radio Burst at Low Frequencies." The Astrophysical Journal, 867 (1): 40 [10.3847/1538-4357/aae2b6]

    Gopalswamy, N., and Q. Gong. 2018. "A small satellite mission for solar coronagraphy." CubeSats and NanoSats for Remote Sensing II, [10.1117/12.2323807]

    Pal, S., D. Nandy, N. Srivastava, N. Gopalswamy, and S. Panda. 2018. "Dependence of Coronal Mass Ejection Properties on Their Solar Source Active Region Characteristics and Associated Flare Reconnection Flux." The Astrophysical Journal, 865 (1): 4 [10.3847/1538-4357/aada10]

    Gopalswamy, N., P. Mӓkelӓ, S. Yashiro, and S. Akiyama. 2018. "Long-term solar activity studies using microwave imaging observations and prediction for cycle 25." Journal of Atmospheric and Solar-Terrestrial Physics, 176: 26-33 [10.1016/j.jastp.2018.04.005]

    Kay, C., and N. Gopalswamy. 2018. "The Effects of Uncertainty in Initial CME Input Parameters on Deflection, Rotation, B z , and Arrival Time Predictions." Journal of Geophysical Research: Space Physics, 123 (9): 7220-7240 [10.1029/2018ja025780]

    Gopalswamy, N., S. Yashiro, P. Mäkelä, et al. H. Xie, S. Akiyama, and C. Monstein. 2018. "Extreme Kinematics of the 2017 September 10 Solar Eruption and the Spectral Characteristics of the Associated Energetic Particles." The Astrophysical Journal, 863 (2): L39 [10.3847/2041-8213/aad86c]

    Gopalswamy, N. 2018. "Coronal mass ejections as a new indicator of the active Sun." Proceedings of the International Astronomical Union, 13 (S340): 95-100 [10.1017/s1743921318001527]

    Pal, S., N. Gopalswamy, D. Nandy, et al. S. Akiyama, S. Yashiro, P. Makela, and H. Xie. 2017. "A Sun-to-Earth Analysis of Magnetic Helicity of the 2013 March 17–18 Interplanetary Coronal Mass Ejection." The Astrophysical Journal, 851 (2): 123 [10.3847/1538-4357/aa9983]

    Kay, C., and N. Gopalswamy. 2017. "Using the Coronal Evolution to Successfully Forward Model CMEs' In Situ Magnetic Profiles." Journal of Geophysical Research: Space Physics, 122 (12): 11,810-11,834 [10.1002/2017ja024541]

    Vemareddy, P., N. Gopalswamy, and B. Ravindra. 2017. "Prominence Eruption Initiated by Helical Kink Instability of an Embedded Flux Rope." The Astrophysical Journal, 850 (1): 38 [10.3847/1538-4357/aa9020]

    Cho, K.-S., S.-C. Bong, S. Choi, et al. H. Yang, J. Kim, J.-H. Baek, J. Park, E.-K. Lim, R.-S. Kim, S. Kim, Y.-H. Kim, Y.-D. Park, S. Clarke, J. Davila, N. Gopalswamy, V. Nakariakov, B. Li, and R. Pinto. 2017. "Toward a Next Generation Solar Coronagraph: Development of a Compact Diagnostic Coronagraph on the ISS." Journal of Korean Astronomical Society, 50 (5): 139-149 [10.5303/JKAS.2017.50.5.139]

    Gopalswamy, N., P. Mäkelä, S. Yashiro, et al. N. Thakur, S. Akiyama, and H. Xie. 2017. "A Hierarchical Relationship between the Fluence Spectra and CME Kinematics in Large Solar Energetic Particle Events: A Radio Perspective." Journal of Physics: Conference Series, 900: 012009 [10.1088/1742-6596/900/1/012009]

    Michalek, G., N. Gopalswamy, and S. Yashiro. 2017. "CME Velocity and Acceleration Error Estimates Using the Bootstrap Method." Solar Physics, 292 (8): 114 [10.1007/s11207-017-1143-y]

    Xie, H., P. Mäkelä, O. C. St. Cyr, and N. Gopalswamy. 2017. "Comparison of the coronal mass ejection shock acceleration of three widespread SEP events during solar cycle 24." Journal of Geophysical Research: Space Physics, 122 (7): 7021-7041 [10.1002/2017ja024218]

    Gopalswamy, N., S. Akiyama, S. Yashiro, and H. Xie. 2017. "A New Technique to Provide Realistic Input to CME Forecasting Models." Proceedings of the International Astronomical Union, 13 (S335): 258-262 [10.1017/s1743921317011048]

    Kumari, A., R. Ramesh, C. Kathiravan, and N. Gopalswamy. 2017. "New Evidence for a Coronal Mass Ejection-driven High Frequency Type II Burst near the Sun." The Astrophysical Journal, 843 (1): 10 [10.3847/1538-4357/aa72e7]

    Kay, C., N. Gopalswamy, H. Xie, and S. Yashiro. 2017. "Deflection and Rotation of CMEs from Active Region 11158." Solar Physics, 292 (6): 78 [10.1007/s11207-017-1098-z]

    Gopalswamy, N., S. Yashiro, S. Akiyama, and H. Xie. 2017. "Estimation of Reconnection Flux Using Post-eruption Arcades and Its Relevance to Magnetic Clouds at 1 AU." Solar Physics, 292 (4): 65 [10.1007/s11207-017-1080-9]

    Reginald, N. L., N. Gopalswamy, S. Yashiro, Q. Gong, and M. Guhathakurta. 2017. "Replacing the polarizer wheel with a polarization camera to increase the temporal resolution and reduce the overall complexity of a solar coronagraph." Journal of Astronomical Telescopes, Instruments, and Systems, 3 (1): 014001 [10.1117/1.jatis.3.1.014001]

    Kay, C., N. Gopalswamy, A. Reinard, and M. Opher. 2017. "Predicting the Magnetic Field of Earth-impacting CMEs." The Astrophysical Journal, 835 (2): 117 [10.3847/1538-4357/835/2/117]

    Gopalswamy, N., S. Yashiro, N. Thakur, et al. P. Mäkelä, H. Xie, and S. Akiyama. 2016. "The 2012 July 23 Backside Eruption: An Extreme Energetic Particle Event?" The Astrophysical Journal, 833 (2): 216 [10.3847/1538-4357/833/2/216]

    Kishore, P., R. Ramesh, K. Hariharan, C. Kathiravan, and N. Gopalswamy. 2016. "CONSTRAINING THE SOLAR CORONAL MAGNETIC FIELD STRENGTH USING SPLIT-BAND TYPE II RADIO BURST OBSERVATIONS." The Astrophysical Journal, 832 (1): 59 [10.3847/0004-637x/832/1/59]

    Michalek, G., A. Shanmugaraju, N. Gopalswamy, S. Yashiro, and S. Akiyama. 2016. "Statistical Analysis of Periodic Oscillations in LASCO Coronal Mass Ejection Speeds." Solar Physics, 291 (12): 3751-3764 [10.1007/s11207-016-1000-4]

    Michalek, G., N. Gopalswamy, S. Yashiro, and K. Bronarska. 2016. "Erratum to: Dynamics of CMEs in the LASCO Field of View." Solar Physics, 291 (12): 3869-3869 [10.1007/s11207-016-1005-z]

    Schmidt, J. M., I. H. Cairns, N. Gopalswamy, and S. Yashiro. 2016. "Coronal magnetic field profiles from shock‐CME standoff distances." Journal of Geophysical Research: Space Physics, 121 (10): 9299-9315 [10.1002/2016ja022956]

    Selvakumaran, R., B. Veenadhari, S. Akiyama, et al. M. Pandya, N. Gopalswamy, S. Yashiro, S. Kumar, P. Mäkelä, and H. Xie. 2016. "On the reduced geoeffectiveness of solar cycle 24: A moderate storm perspective." Journal of Geophysical Research: Space Physics, 121 (9): 8188-8202 [10.1002/2016ja022885]

    Mäkelä, P., N. Gopalswamy, M. J. Reiner, S. Akiyama, and V. Krupar. 2016. "SOURCE REGIONS OF THE TYPE II RADIO BURST OBSERVED DURING A CME–CME INTERACTION ON 2013 MAY 22." The Astrophysical Journal, 827 (2): 141 [10.3847/0004-637x/827/2/141]

    Teklu, T., A. Gholap, N. Gopalswamy, et al. S. Yashiro, P. Makela, S. Akiyama, N. Thakur, and H. Xie. 2016. "A study of the 2012 January 19 complex type II radio burst using wind, SOHO, and STEREO observations." 2016 URSI Asia-Pacific Radio Science Conference (URSI AP-RASC), [10.1109/ursiap-rasc.2016.7601386]

    Gopalswamy, N. 2016. "Solar activity studies using microwave imaging observations." 2016 URSI Asia-Pacific Radio Science Conference (URSI AP-RASC), [10.1109/ursiap-rasc.2016.7601382]

    Gopalswamy, N. 2016. "Low-frequency radio bursts and space weather." 2016 URSI Asia-Pacific Radio Science Conference (URSI AP-RASC), [10.1109/ursiap-rasc.2016.7601368]

    Gopalswamy, N., S. Akiyama, P. Makela, S. Yashiro, and I. H. Caims. 2016. "On the directivity of low-frequency type IV radio bursts." 2016 URSI Asia-Pacific Radio Science Conference (URSI AP-RASC), [10.1109/ursiap-rasc.2016.7601385]

    Lavraud, B., Y. Liu, K. Segura, et al. J. He, G. Qin, M. Temmer, J.-C. Vial, M. Xiong, J. Davies, A. Rouillard, R. Pinto, F. Auchère, R. Harrison, C. Eyles, W. Gan, P. Lamy, L. Xia, J. Eastwood, L. Kong, J. Wang, R. Wimmer-Schweingruber, S. Zhang, Q. Zong, J. Soucek, J. An, L. Prech, A. Zhang, P. Rochus, V. Bothmer, M. Janvier, M. Maksimovic, C. Escoubet, E. Kilpua, J. Tappin, R. Vainio, S. Poedts, M. Dunlop, N. Savani, N. Gopalswamy, S. Bale, G. Li, T. Howard, C. DeForest, D. Webb, N. Lugaz, S. Fuselier, K. Dalmasse, J. Tallineau, D. Vranken, and J. Fernández. 2016. "A small mission concept to the Sun–Earth Lagrangian L5 point for innovative solar, heliospheric and space weather science." Journal of Atmospheric and Solar-Terrestrial Physics, 146: 171-185 [10.1016/j.jastp.2016.06.004]

    Xie, H., P. Mäkelä, N. Gopalswamy, and O. C. St. Cyr. 2016. "Energy dependence of SEP electron and proton onset times." Journal of Geophysical Research: Space Physics, 121 (7): 6168-6183 [10.1002/2015ja021422]

    Gopalswamy, N., S. Yashiro, and S. Akiyama. 2016. "UNUSUAL POLAR CONDITIONS IN SOLAR CYCLE 24 AND THEIR IMPLICATIONS FOR CYCLE 25." The Astrophysical Journal, 823 (1): L15 [10.3847/2041-8205/823/1/l15]

    Mäkelä, P., N. Gopalswamy, and S. Yashiro. 2016. "The radial speed‐expansion speed relation for Earth‐directed CMEs." Space Weather, 14 (5): 368-378 [10.1002/2015sw001335]

    Sterling, A. C., R. L. Moore, D. A. Falconer, et al. N. K. Panesar, S. Akiyama, S. Yashiro, and N. Gopalswamy. 2016. "MINIFILAMENT ERUPTIONS THAT DRIVE CORONAL JETS IN A SOLAR ACTIVE REGION." The Astrophysical Journal, 821 (2): 100 [10.3847/0004-637x/821/2/100]

    Gopalswamy, N. 2016. "History and development of coronal mass ejections as a key player in solar terrestrial relationship." Geoscience Letters, 3 (1): 8 [10.1186/s40562-016-0039-2]

    Schmidt, J. M., I. H. Cairns, H. Xie, O. C. St. Cyr, and N. Gopalswamy. 2016. "CME flux rope and shock identifications and locations: Comparison of white light data, Graduated Cylindrical Shell model, and MHD simulations." Journal of Geophysical Research: Space Physics, 121 (3): 1886-1906 [10.1002/2015ja021805]

    Yamamoto, M., K. Shiokawa, T. Nakamura, and N. Gopalswamy. 2016. "Special issue “International CAWSES-II Symposium”." Earth Planet Sp, 68 (1): 26 [10.1186/s40623-016-0392-6]

    Thakur, N., N. Gopalswamy, P. Mäkelä, et al. S. Akiyama, S. Yashiro, and H. Xie. 2016. "Two Exceptions in the Large SEP Events of Solar Cycles 23 and 24." Solar Physics, 291 (2): 513-530 [10.1007/s11207-015-0830-9]

    Gopalswamy, N., P. Makela, S. Akiyama, S. Yashiro, and N. Thakur. 2015. "CMEs during the Two Activity Peaks in Cycle 24 and their Space Weather Consequences." Sun and Geosphere, 10: 111-118.

    Gopalswamy, N., S. Yashiro, H. Xie, S. Akiyama, and P. Mäkelä. 2015. "Properties and geoeffectiveness of magnetic clouds during solar cycles 23 and 24." Journal of Geophysical Research: Space Physics, 120 (11): 9221-9245 [10.1002/2015ja021446]

    Tsuda, T., M. Shepherd, and N. Gopalswamy. 2015. "Advancing the understanding of the Sun–Earth interaction—the Climate and Weather of the Sun–Earth System (CAWSES) II program." Progress in Earth and Planetary Science, 2 (1): 28 [10.1186/s40645-015-0059-0]

    Gopalswamy, N., P. Mäkelä, S. Yashiro, et al. H. Xie, S. Akiyama, and N. Thakur. 2015. "High-energy solar particle events in cycle 24." Journal of Physics: Conference Series, 642: 012012 [10.1088/1742-6596/642/1/012012]

    Cremades, H., F. A. Iglesias, O. C. St. Cyr, et al. H. Xie, M. L. Kaiser, and N. Gopalswamy. 2015. "Low-Frequency Type-II Radio Detections and Coronagraph Data Employed to Describe and Forecast the Propagation of 71 CMEs/Shocks." Solar Physics, 290 (9): 2455-2478 [10.1007/s11207-015-0776-y]

    Gopalswamy, N., S. Yashiro, and S. Akiyama. 2015. "KINEMATIC AND ENERGETIC PROPERTIES OF THE 2012 MARCH 12 POLAR CORONAL MASS EJECTION." The Astrophysical Journal, 809 (1): 106 [10.1088/0004-637x/809/1/106]

    Mann, I., P. K. Manoharan, N. Gopalswamy, et al. C. Briand, I. V. Chashei, S. E. Gibson, D. Lario, Y. Hanaoka, O. Malandraki, E. Kontar, and J. D. Richardson. 2015. "DIVISION E COMMISSION 49: INTERPLANETARY PLASMA AND HELIOSPHERE." Proceedings of the International Astronomical Union, 11 (T29A): 300-315 [10.1017/s1743921316000818]

    Kahler, S., N. Gopalswamy, P. Makela, et al. S. Akiyama, S. Yashiro, H. Xie, and N. Thakur. 2015. "Filament Eruptions Outside of Active Regions as Sources of Large Solar Energetic Particle Events." 34th International Cosmic Ray Conference (ICRC2015), 34: 48.

    Gopalswamy, N., B. Tsurutani, and Y. Yan. 2015. "Short-term variability of the Sun-Earth system: an overview of progress made during the CAWSES-II period." Progress in Earth and Planetary Science, 2 (1): 13 [10.1186/s40645-015-0043-8]

    Gopalswamy, N., P. Mäkelä, S. Akiyama, et al. S. Yashiro, H. Xie, N. Thakur, and S. W. Kahler. 2015. "LARGE SOLAR ENERGETIC PARTICLE EVENTS ASSOCIATED WITH FILAMENT ERUPTIONS OUTSIDE ACTIVE REGIONS." The Astrophysical Journal, 806 (1): 8 [10.1088/0004-637x/806/1/8]

    Gopalswamy, N., H. Xie, S. Akiyama, et al. P. Mäkelä, S. Yashiro, and G. Michalek. 2015. "THE PECULIAR BEHAVIOR OF HALO CORONAL MASS EJECTIONS IN SOLAR CYCLE 24." The Astrophysical Journal, 804 (1): L23 [10.1088/2041-8205/804/1/l23]

    Michalek, G., N. Gopalswamy, S. Yashiro, and K. Bronarska. 2015. "Dynamics of CMEs in the LASCO Field of View." Solar Physics, 290 (3): 903-917 [10.1007/s11207-015-0653-8]

    Makela, P., N. Gopalswamy, S. Akiyama, H. Xie, and S. Yashiro. 2015. "Estimating the Height of CMEs Associated with a Major SEP Event at the Onset of the Metric Type II Radio Burst during Solar Cycles 23 and 24." The Astrophysical Journal, 806 (1): 13.

    Gopalswamy, N. 2014. "The Dynamics of Eruptive Prominences." Astrophysics and Space Science Library, 381-410 [10.1007/978-3-319-10416-4_15]

    Gopalswamy, N., and M. . 2014. "Latitudinal Connectivity of Ground Level Enhancement Events." Outstanding Problems in Heliophysics: From Coronal Heating to the Edge of the Heliosphere, 484: 63.

    Hariharan, K., R. Ramesh, P. Kishore, C. Kathiravan, and N. Gopalswamy. 2014. "An Estimate of the Coronal Magnetic Field near a Solar Coronal Mass Ejection from Low-frequency Radio Observations." The Astrophysical Journal, 795 [14-10.1088/0004-637X/795/1/14]

    Thakur, N., N. Gopalswamy, H. Xie, et al. P. Makela;, S. Yashiro, S. Akiyama, and J. M. Davila. 2014. "Ground Level Enhancement in the 2014 January 6 Solar Energetic Particle Event." The Astrophysical Journal, 790 [LL13-10.1088/2041-8205/790/1/L13]

    Gopalswamy, N., H. Xie, S. Akiyama, P. A. Makela;, and S. Yashiro. 2014. "Major solar eruptions and high-energy particle events during solar cycle 24." Earth, Planets, and Space, 66: 104 [Full Text (Link)] [10.1186/1880-5981-66-104]

    Yashiro, S., N. Gopalswamy, P. Makela;, et al. S. Akiyama, W. Uddin, A. K. Srivastava, N. C. Joshi, R. Chandra, P. K. Manoharan, K. Mahalakshmi, V. C. Dwivedi, R. Jain, A. K. Awasthi, N. V. Nitta, M. J. Aschwanden, and D. P. Choudhary. 2014. "Homologous flare-CME events and their metric type II radio burst association." Advances in Space Research, 54: 1941-1948 [10.1016/j.asr.2014.07.002]

    Belov, A., A. Abunin, M. Abunina, et al. E. Eroshenko, V. Oleneva, V. Yanke, A. Papaioannou, H. Mavromichalaki, N. Gopalswamy, and S. Yashiro. 2014. "Coronal Mass Ejections and Non-recurrent Forbush Decreases." Solar Physics, 289: 3949-3960 [10.1007/s11207-014-0534-6]

    Kim, R.-S., Y.-J. Moon, N. Gopalswamy, Y.-D. Park, and Y.-H. Kim. 2014. "Two-step forecast of geomagnetic storm using coronal mass ejection and solar wind condition." Space Weather, 12: 246-256 [10.1002/2014SW001033]

    Gopalswamy, N., S. Akiyama, S. Yashiro, et al. H. Xie, P. Makela;, and G. Michalek. 2014. "Anomalous expansion of coronal mass ejections during solar cycle 24 and its space weather implications." Geophysical Research Letters, 41: 2673-2680 [10.1002/2014GL059858]

    Nitta, N. V., W. Liu, N. Gopalswamy, and S. Yashiro. 2014. "The Relation Between Large-Scale Coronal Propagating Fronts and Type II Radio Bursts." Solar Physics, 289: 4589-4606 [10.1007/s11207-014-0602-y]

    Kahler, S. W., C. N. Arge, S. Akiyama, and N. Gopalswamy. 2014. "Do Solar Coronal Holes Affect the Properties of Solar Energetic Particle Events?" Solar Physics, 289: 657-673 [10.1007/s11207-013-0427-0]

    Awasthi, A. K., R. Jain, P. D. Gadhiya, et al. M. J. Aschwanden, W. Uddin, A. K. Srivastava, R. Chandra, N. Gopalswamy, N. V. Nitta, S. Yashiro, P. K. Manoharan, D. P. Choudhary, N. C. Joshi, V. C. Dwivedi, and K. Mahalakshmi. 2014. "Multiwavelength diagnostics of the precursor and main phases of an M1.8 flare on 2011 April 22." Monthly Notices of the Royal Astronomical Society, 437: 2249-2262 [10.1093/mnras/stt2032]

    Gopalswamy, N., I. Mann, J.-L. Bougeret, et al. C. Briand, R. Lallement, D. Lario, P. K. Manoharan, K. Shibata, and D. F. Webb. 2013. "DIVISION II: COMMISSION 49: INTERPLANETARY PLASMA AND THE HELIOSPHERE." Proceedings of the International Astronomical Union, 10 (T28B): 112-114 [10.1017/s1743921315005542]

    Guhathakurta, M., J. M. Davila, and N. Gopalswamy. 2013. "The International Space Weather Initiative (ISWI)." SPACE WEATHER-THE INTERNATIONAL JOURNAL OF RESEARCH AND APPLICATIONS, 11: 327-329 [10.1002/swe.20048]

    Xie, H., O. C. St Cyr, N. Gopalswamy, D. Odstrcil, and H. Cremades. 2013. "Understanding shock dynamics in the inner heliosphere with modeling and type II radio data: A statistical study." JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 118: 4711-4723 [10.1002/jgra.50444]

    Guhathakurta, M., J. M. Davila, and N. Gopalswamy. 2013. "The International Space Weather Initiative(ISWI)." Space Weather, 11: 327-329 [10.1002/swe.20048]

    Choudhary, D. P., S. Gosain, N. Gopalswamy, et al. P. K. Manoharan, R. Chandra, W. Uddin, A. K. Srivastava, S. Yashiro, N. C. Joshi, P. Kayshap, V. C. Dwivedi, K. Mahalakshmi, E. Elamathi, M. Norris, A. K. Awasthi, and R. Jain. 2013. "Flux emergence, flux imbalance, magnetic free energy and solar flares." Advances in Space Research, 52: 1561-1566 [10.1016/j.asr.2013.07.009]

    Akiyama, S., N. Gopalswamy, S. Yashiro, and P. Makela. 2013. "A Study of Coronal Holes Observed by SoHO/EIT and the Nobeyama Radioheliograph." Publications of the Astronomical Society of Japan, 65: 15.

    Chandra, R., N. Gopalswamy, P. Makela, et al. H. Xie, S. Yashiro, S. Akiyama, W. Uddin, A. K. Srivastava, N. C. Joshi, R. Jain, A. K. Awasthi, P. K. Manoharan, K. Mahalakshmi, V. C. Dwivedi, D. P. Choudhary, and N. V. Nitta. 2013. "Solar energetic particle events during the rise phases of solar cycles 23 and 24." Advances in Space Research, 52: 2102-2111 [10.1016/j.asr.2013.09.006]

    Joshi, N. C., W. Uddin, A. K. Srivastava, et al. R. Chandra, N. Gopalswamy, P. K. Manoharan, M. J. Aschwanden, D. P. Choudhary, R. Jain, N. V. Nitta, H. Xie, S. Yashiro, S. Akiyama, P. Makela, P. Kayshap, A. K. Awasthi, V. C. Dwivedi, and K. Mahalakshmi. 2013. "A multiwavelength study of eruptive events on January 23, 2012 associated with a major solar energetic particle event." Advances in Space Research, 52: 1-14 [10.1016/j.asr.2013.03.009]

    Gopalswamy, N., and S. Yashiro. 2013. "Obscuration of Flare Emission by an Eruptive prominence." Publications of the Astronomical Society of Japan, 65: 11.

    Gopalswamy, N., P. Makela, H. Xie, and S. Yashiro. 2013. "Testing the empirical shock arrival model using quadrature observations." Space Weather, 11: 661-669 [10.1002/2013SW000945]

    Gopalswamy, N., and S. Yashiro. 2013. "Obscuration of Flare Emission by an Eruptive rominence." Publications of the Astronomical Society of Japan, 65: 11.

    Xie, H., N. Gopalswamy, and O. C. StCyr. 2013. "Effect of CME interactions on SEP intensity: modeling the 2012 March-07 SEP event with ENLIL." AAS/Solar Physics Division Meeting, 44: #.1.25-.

    Xie, H. N., N. Gopalswamy, and O. C. St cyr. 2013. "Near-Sun Flux-Rope Structure of CMEs." Solar Physics, 284 (1): 47-58 [10.1007/s11207-012-0209-0]

    Xie, H. N., O. C. St Cyr, N. Gopalswamy, D. Odstrcil, and H. Cremades. 2013. "Understanding shock dynamics in the inner heliosphere with modeling and type II radio data: A statistical study." J. Geophys. Res. Space Physics, 118 (8): 4711-4723 [10.1002/jgra.50444]

    Gopalswamy, N., T. Nieves-Chinchilla, M. Hidalgo, et al. J. Zhang, P. Riley, L. van Driel-Gesztelyi, and C. H. Mandrini. 2013. "Preface." Solar Physics, 284 (1): 1-4 [10.1007/s11207-013-0280-1]

    Cho, K.-S., S.-H. Park, K. Marubashi, et al. N. Gopalswamy, S. Akiyama, S. Yashiro, R. Kim, and E. Lim. 2013. "Comparison of Helicity Signs in Interplanetary CMEs and Their Solar Source Regions." Solar Physics, 284 (1): 105-127 [10.1007/s11207-013-0224-9]

    Mäkelä, P., N. Gopalswamy, H. N. Xie, et al. A. Mohamed, S. Akiyama, and S. Yashiro. 2013. "Coronal Hole Influence on the Observed Structure of Interplanetary CMEs." Solar Physics, 8: [10.1007/s11207-012-0211-6]

    Gopalswamy, N., S. Yashiro, P. Måkelå, et al. G. J. Michalek, K. Shibasaki, and D. Hathaway. 2013. "Erratum: "Behavior of Solar Cycles 23 and 24 Revealed by Microwave Observations"." The Astrophysical Journal Letters, 763 (1): L24 [10.1088/2041-8205/763/1/L24]

    Gopalswamy, N., P. Måkelå, S. Akiyama, et al. H. Xie, S. Yashiro, and A. Reinard. 2013. "The Solar Connection of Enhanced Heavy Ion Charge States in the Interplanetary Medium: Implications for the Flux-Rope Structure of CMEs." Solar Physics, 284 (1): 17-46 [10.1007/s11207-012-0215-2]

    Drake, J., O. Cohen, S. Yashiro, and N. Gopalswamy. 2013. "Implications of Mass and Energy Loss due to Coronal Mass Ejections on Magnetically Active Stars." The Astrophysical Journal, 764: 170 [10.1088/0004-637X/764/2/170]

    Cho, K., N. Gopalswamy, R. Kwon, R. Kim, and S. Yashiro. 2013. "A High-frequency Type II Solar Radio Burst Associated with the 2011 February 13 Coronal Mass Ejection." The Astrophysical Journal, 765: 148 [ 10.1088/0004-637X/765/2/148]

    Yashiro, S., N. Gopalswamy, P. MÄkelÄ, and S. Akiyama. 2013. "Post-Eruption Arcades and Interplanetary Coronal Mass Ejections." Solar Physics, 33: [10.1007/s11207-013-0248-1]

    Kim, R., N. Gopalswamy, K. Cho, Y. Moon, and S. Yashiro. 2013. "Propagation Characteristics of CMEs Associated with Magnetic Clouds and Ejecta." Solar Physics, 26: [10.1007/s11207-013-0230-y]

    Gopalswamy, N., H. Xie, S. Akiyama, et al. S. Yashiro, I. Usoskin, and J. Davila. 2013. "The First Ground Level Enhancement Event of Solar Cycle 24: Direct Observation of Shock Formation and Particle Release Heights." The Astrophysical Journal Letters, 765 (2): L30 [10.1088/2041-8205/765/2/L30]

    Uddin, W., R. Jain, P. K. Manoharan, et al. D. Prasad Choudhary, V. Charan Dwivedi, M. Aschwanden, N. Nitta, N. Gopalswamy, A. Awasthi, R. Chandra, A. Srivastava, P. Kayshap, N. C. Joshi, M. Norris, P. A. Makela, and K. Mahalaksh. 2012. "A Study of the 12 June 2010 C61/SF flare associated with a CME; surge and energetic particles." 39th COSPAR Scientific Assembly, 39: 2026.

    Pillet, V., J. A. Klimchuk, D. Melrose, et al. G. Cauzzi, L. van Driel-Gesztelyi, N. Gopalswamy, A. Kosovichev, I. Mann, and C. Schrijver. 2012. "Division II: Sun and Heliosphere." Transactions of the International Astronomical Union, Series A ( 28): 61-68 [ 10.1017/S1743921312002669]

    Awasthi, A., R. Jain, D. Prasad Choudhary, et al. V. Charan Dwivedi, M. Aschwanden, N. Nitta, N. Gopalswamy, R. Chandra, A. Srivastava, P. Kayshap, N. C. Joshi, P. K. Manoharan, M. Norris, K. Mahalakshmi, E. Elamathi, and W. Uddin. 2012. "Multi-wavelength diagnostics of thermal and non-thermal sources in the 22 April 2011 flare event." 39th COSPAR Scientific Assembly, 39: 75.

    Gopalswamy, N. 2012. "Factors affecting the intensity of solar energetic particle events." American Institute of Physics Conference Series, 1436: 247-252 [ 10.1063/1.4723615]

    Gopalswamy, N., I. Mann, J. Bougeret, et al. C. Briand, R. Lallement, D. Lario, P. K. Manoharan, K. Shibata, and D. Webb. 2012. "Commission 49: Interplanetary Plasma and Heliosphere." Transactions of the International Astronomical Union, Series A ( 28): 95-124 [ 10.1017/S1743921312002694]

    Chandra, R., R. Jain, D. Prasad Choudhary, et al. V. Charan Dwivedi, M. Aschwanden, N. Nitta, N. Gopalswamy, A. Awasthi, A. Srivastava, P. Kayshap, N. C. Joshi, P. K. Manoharan, P. A. Makela, K. Mahalakshmi, E. Elamathi, and W. Uddi. 2012. "Solar Energetic Particle Events and Associated CMEs during the Rising Phases of Solar Cycle 23 and 24 - A Comparative study." 39th COSPAR Scientific Assembly, 39: 303.

    Prasad-Choudhary, D., R. Jain, V. Charan Dwivedi, et al. M. Aschwanden, N. Nitta, N. Gopalswamy, A. Awasthi, R. Chandra, A. Srivastava, P. K. Manoharan, M. Norris, K. Mahalakshmi, E. Elamathi, W. Uddin, and S. Yashiro. 2012. "Magnetic Flux Imbalance in Active Regions NOAA 11283 and NOAA 11302." 39th COSPAR Scientific Assembly, 39: 334.

    Gopalswamy, N., J. M. Davila, F. Luebken, M. Shepherd, and T. Tsuda. 2012. "Global Cooperation in the Capacity Building Activities on Sun-Earth Connection Studies." 39th COSPAR Scientific Assembly, 39: 650.

    Gopalswamy, N. 2012. "The 3-D structure of CMEs as Inferred from Coronagraph Observations." 39th COSPAR Scientific Assembly, 39: 649.

    Gopalswamy, N., J. M. Davila, M. L. Kaiser, et al. R. J. Macdowall, O. C. St Cyr, H. N. Xie, P. A. Makela, S. Yashiro, and W. Poomvises. 2012. "A Global View of the Energetic Solar Eruptions during 2012 January 19-27." 39th COSPAR Scientific Assembly, 39: 652.

    Gopalswamy, N., S. Yashiro, S. Akiyama, and K. Shibasaki. 2012. "Inferences on the Behavior of Solar Cycle 24 from the Polar Coronal Hole Enhancement and the Rate of Prominence Eruptions Observed by the Nobeyama Radioheliograph." 39th COSPAR Scientific Assembly, 39: 651.

    Gopalswamy, N., R. Jain, D. Prasad Choudhary, et al. V. Charan Dwivedi, M. Aschwanden, N. Nitta, A. Awasthi, A. Srivastava, N. C. Joshi, P. K. Manoharan, P. A. Makela, K. Mahalakshmi, E. Elamathi, W. Uddin, S. Yashiro, and S. Akiyam. 2012. "Height of Shock Formation in the Solar Corona Inferred from Observations of Type II Radio Bursts and Coronal Mass Ejections." 39th COSPAR Scientific Assembly, 39: 653.

    Srivastava, A., R. Jain, D. Prasad Choudhary, et al. V. Charan Dwivedi, M. Aschwanden, N. Nitta, N. Gopalswamy, A. Awasthi, R. Chandra, P. Kayshap, N. C. Joshi, P. K. Manoharan, M. Norris, P. A. Makela, K. Mahalakshmi, and E. Elamathi. 2012. "On the Oscillatory and Non-oscillatory Loop Systems and Dynamical Processes during the X21 Solar Flare on 06 September 2011." 39th COSPAR Scientific Assembly, 39: 1882.

    Yashiro, S., R. Jain, D. Prasad Choudhary, et al. V. Charan Dwivedi, M. Aschwanden, N. Nitta, N. Gopalswamy, A. Awasthi, R. Chandra, A. Srivastava, P. Kayshap, N. C. Joshi, P. K. Manoharan, P. A. Makela, K. Mahalakshmi, and E. Elam. 2012. "Coronal Mass Ejections and Type II Radio Bursts from Active Region 11158." 39th COSPAR Scientific Assembly, 39: 2205.

    Gopalswamy, N. 2012. "Energetic particle and other space weather events of solar cycle 24." American Institute of Physics Conference Series, 1500: 14-19 [ 10.1063/1.4768738]

    Mohamed, A., N. Gopalswamy, S. Yashiro, et al. S. Akiyama, P. MÄkelÄ, and H. N. Xie. 2012. "The relation between coronal holes and coronal mass ejections during the rise, maximum, and declining phases of Solar Cycle 23." J. Geophys. Res., 117 (A1): A01103 [10.1029/2011JA016589]

    Gopalswamy, N., N. Nitta, S. Akiyama, P. Måkelå, and S. Yashiro. 2012. "Coronal Magnetic Field Measurement from EUV Images Made by the Solar Dynamics Observatory." The Astrophysical Journal, 744: 72 [ 10.1088/0004-637X/744/1/72]

    Xie, H. N., D. Odstrcil, L. Mays, et al. O. C. St Cyr, N. Gopalswamy, and H. Cremades. 2012. "Understanding shock dynamics in the inner heliosphere with modeling and Type II radio data: The 2010-04-03 event." Journal of Geophysical Research (Space Physics), 117: 4105 [ 10.1029/2011JA017304]

    Ji, E., Y. Moon, N. Gopalswamy, and D. Lee. 2012. "Comparison of Dst forecast models for intense geomagnetic storms." Journal of Geophysical Research (Space Physics), 117: 3209 [ 10.1029/2011JA016872]

    Kim, R., N. Gopalswamy, Y. Moon, K. Cho, and S. Yashiro. 2012. "Magnetic Field Strength in the Upper Solar Corona Using White-light Shock Structures Surrounding Coronal Mass Ejections." The Astrophysical Journal, 746: 118 [ 10.1088/0004-637X/746/2/118]

    Gopalswamy, N., W. Thompson, J. Davila, et al. M. Kaiser, S. Yashiro, P. Måkelå, G. Michalek, J. Bougeret, and R. Howard. 2012. "Erratum: Relation Between Type II Bursts and CMEs Inferred from STEREO Observations." Solar Physics, 277: 459 [ 10.1007/s11207-011-9918-z]

    Veenadhari, B., R. Selvakumaran, R. Singh, et al. A. Maurya, N. Gopalswamy, S. Kumar, and T. Kikuchi. 2012. "Coronal mass ejection–driven shocks and the associated sudden commencements/sudden impulses." J. Geophys. Res., 117 (A4): A04210 [10.1029/2011JA017216]

    Gopalswamy, N., S. Yashiro, P. Måkelå, et al. G. Michalek, K. Shibasaki, and D. Hathaway. 2012. "Behavior of Solar Cycles 23 and 24 Revealed by Microwave Observations." The Astrophysical Journal, 750: L42 [ 10.1088/2041-8205/750/2/L42]

    Kahler, S., S. Akiyama, and N. Gopalswamy. 2012. "Deflections of Fast Coronal Mass Ejections and the Properties of Associated Solar Energetic Particle Events." The Astrophysical Journal, 754: 100 [ 10.1088/0004-637X/754/2/100]

    Ramesh, R., N. Gopalswamy, A. Lakshmi, and C. Kathiravan. 2012. "The Location of Solar Metric Type II Radio Bursts with Respect to the Associated Coronal Mass Ejections." The Astrophysical Journal, 39: 1549.

    Gopalswamy, N., P. Måkelå, S. Akiyama, et al. S. Yashiro, H. Xie, R. MacDowall, and M. Kaiser. 2012. "Radio-loud CMEs from the disk center lacking shocks at 1 AU." Journal of Geophysical Research (Space Physics), 117: 8106 [ 10.1029/2012JA017610]

    Gopalswamy, N., P. MÄkelÄ, S. Yashiro, and J. Davila. 2012. "The Relationship Between the Expansion Speed and Radial Speed of CMEs Confirmed Using Quadrature Observations of the 2011 February 15 CME." Sun and Geosphere, 7: 7.

    Park, J., Y. Moon, and N. Gopalswamy. 2012. "Dependence of solar proton events on their associated activities: Coronal mass ejection parameters." J. Geophys. Res., 117 (A8): A08108 [10.1029/2011JA017477]

    Poomvises, W., N. Gopalswamy, S. Yashiro, R. Kwon, and O. Olmedo. 2012. "Determination of the Heliospheric Radial Magnetic Field from the Standoff Distance of a CME-driven Shock Observed by the STEREO Spacecraft." The Astrophysical Journal, 758: 118 [ 10.1088/0004-637X/758/2/118]

    Gopalswamy, N., H. N. Xie, S. Yashiro, et al. S. Akiyama, P. Auml;kelä, and I. Usoskin. 2012. "Properties of Ground Level Enhancement Events and the Associated Solar Eruptions During Solar Cycle 23." Space Science Reviews, 171: 23 [Full Text (Link)] [10.1007/s11214-012-9890-4 ]

    Gopalswamy, N., and N. Nitta. 2012. "Preface." Space Science Reviews, 171: 1 [10.1007/s11214-012-9934-9]

    StCyr, O. C., M. Orlove, H. Xie, et al. H. R. Gilbert, D. Odstrcil, N. Gopalswamy, M. L. Mays, C. A. Quirk, and C. Henning. 2011. "CME Parameter Input to ENLIL: LASCO halo cone versus STEREO measurements." AGU Fall Meeting Abstracts, 2046-:

    Quirk, C. A., O. C. St Cyr, C. Henning, et al. H. Xie, H. R. Gilbert, M. Orlove, N. Gopalswamy, and D. Odstrcil. 2011. "Type II Radio Bursts as an Indicator of CME Location." AGU Fall Meeting Abstracts, 2047-:

    St Cyr, O. C., M. Orlove, H. Xie, et al. H. R. Gilbert, D. Odstrcil, N. Gopalswamy, M. L. Mays, C. A. Quirk, and C. Henning. 2011. "CME Parameter Input to ENLIL: LASCO halo cone versus STEREO measurements." AGU Fall Meeting Abstracts, 2046-:

    Xie, H., D. Odstrcil, M. L. Mays, et al. O. C. St Cyr, N. Gopalswamy, and H. Cremades. 2011. "Understanding Shock Dynamics in the Inner Heliosphere with Modeling and Type II Radio Data: the 2010-04-03 event." AGU Fall Meeting Abstracts, 2050-:

    Davila, J. M., N. Gopalswamy, B. J. Thompson, T. Bogdan, and M. A. Hapgood. 2011. "The International Space Weather Initiative (ISWI)." The Sun, the Solar Wind, and the Heliosphere, 375-379, ISBN: 978-90-481-9787-3.

    Gopalswamy, N. 2011. "Universal Heliophysical Processes." The Sun, the Solar Wind, and the Heliosphere, 9-20.

    Gopalswamy, N. 2011. "Heliocentric Distance of Coronal Mass Ejections at the Time of Energetic Particle Release: Revisiting the Ground Level experiments and instrumentation." International Cosmic Ray Conference, 10: 157.

    Gopalswamy, N. 2011. "Coronal mass ejections and their heliospheric consequences." Astronomical Society of India Conference Series, 2: 241-258.

    Gopalswamy, N., and P. MÄkelÄ. 2011. "Low-frequency type III radio bursts and solar energetic particle events." Central European Astrophysical Bulletin, 35: 71-82.

    Macdowall, R. J., T. Lazio, S. Bale, et al. J. Burns, N. Gopalswamy, D. L. Jones, M. L. Kaiser, J. Kasper, and K. Weiler. 2011. "Observing Solar Radio Bursts from the Lunar Surface." Planetary, (Solar and Heliospher): 541-550.

    Gopalswamy, N. 2011. "Coronal Mass Ejections and Solar Radio Emissions." Planetary, (Solar and Heliospher): 325-342.

    Gopalswamy, N. 2011. "Mukul Ranjan Kundu." Physics Today, 64: 040000 [Full Text (Link)] [ 10.1063/1.3580501]

    Gopalswamy, N., and S. Yashiro. 2011. "The Strength and Radial Profile of the Coronal Magnetic Field from the Standoff Distance of a Coronal Mass Ejection-driven Shock." The Astrophysical Journal, 736: L17 [10.1088/2041-8205/736/1/L17]

    Thejappa, G., R. MacDowall, and N. Gopalswamy. 2011. "Effects of Refraction on Angles and Times of Arrival of Solar Radio Bursts." The Astrophysical Journal, 734: 16 [10.1088/0004-637X/734/1/16]

    Mäkelä, P., N. Gopalswamy, S. Akiyama, H. Xie, and S. Yashiro. 2011. "Energetic storm particle events in coronal mass ejection-driven shocks." Journal of Geophysical Research (Space Physics), 116: 8101 [ 10.1029/2011JA016683]

    Sawant, H., N. Gopalswamy, R. Rosa, et al. R. Sych, S. Anfinogentov, F. Fernandes, J. Cecatto, and J. Costa. 2011. "The Brazilian decimetric array and space weather." Journal of Atmospheric and Solar-Terrestrial Physics, 73: 1300-1310 [ 10.1016/j.jastp.2010.09.009]

    Gadimova, S., H. Haubold, D. Danov, et al. K. Georgieva, G. Maeda, K. Yumoto, J. Davila, and N. Gopalswamy. 2011. "United Nations Basic Space Science Initiative: 2010 Status Report on the International Space Weather Initiative." Sun and Geosphere, 6: 7.

    Temmer, M., A. Veronig, N. Gopalswamy, and S. Yashiro. 2011. "Relation Between the 3D-Geometry of the Coronal Wave and Associated CME During the 26 April 2008 Event." Solar Physics, 273: 421 [ 10.1007/s11207-011-9746-1]

    Lazio, T., R. MacDowall, J. Burns, et al. D. Jones, K. Weiler, L. Demaio, A. Cohen, N. Paravastu Dalal, E. Polisensky, K. Stewart, S. Bale, N. Gopalswamy, M. Kaiser, and J. Kasper. 2011. "The Radio Observatory on the Lunar Surface for Solar studies." Advances in Space Research, 48 (12): 1942-1957 [10.1016/j.asr.2011.07.006]

    Kilcik, A., V. Yurchyshyn, V. Abramenko, et al. P. Goode, N. Gopalswamy, A. Ozguc, and J. Rozelot. 2011. "Maximum Coronal Mass Ejection Speed as an Indicator of Solar and Geomagnetic Activities." The Astrophysical Journal, 727: 44 [Full Text (Link)] [10.1088/0004-637X/727/1/44]

    Gopalswamy, N., O. Davila, O. Davila, et al. O. Davila, E. C. Sittler, F. Egrave;re, T. L. Duvall, J. Hoeksema, M. Maksimovic, R. J. Macdowall, A. Szabo, and M. Collier. 2011. "Earth-Affecting Solar Causes Observatory (EASCO): A potential International Living with a Star Mission from Sun-Earth L5." Journal of Atmospheric and Solar-Terrestrial Physics, 73: 658-663 [Full Text (Link)] [ 10.1016/j.jastp.2011.01.013]

    Davila, J. M., N. Gopalswamy, and H. Haubold. 2010. "Opportunities for Ionospheric Science as Part of the International Space Weather Initiative (ISWI) (Invited)." AGU Fall Meeting Abstracts, 1-:

    ONeill, J. F., O. C. St Cyr, L. Mays, et al. N. Gopalswamy, J. C. Raymond, A. Ciaravella, S. Yashiro, H. Xie, S. Giordano, and C. Quirk. 2010. "Statistical Study of Solar Activity Associated with SOHO UVCS Coronal Mass Ejections." AGU Fall Meeting Abstracts, 1838-:

    Xie, H., L. Mays, O. C. St Cyr, et al. N. Gopalswamy, D. Odstrcil, and H. Cremades. 2010. "Understanding Interplanetary Shock Dynamics in the Inner Heliosphere with New Observations and Modeling Techniques: Case studies on the 2010-04-03 and 2010-08-01 events." AGU Fall Meeting Abstracts, 1858-:

    St Cyr, O. C., C. Henning, H. Xie, et al. D. Odstrcil, L. Mays, H. Cremades, F. Iglesias, N. Gopalswamy, and M. L. Kaiser. 2010. "Understanding Interplanetary Shock Dynamics in the Inner Heliosphere with New Observations and Modeling Techniques." AGU Fall Meeting Abstracts, 1850-:

    Akiyama, S., N. Gopalswamy, H. Xie, et al. S. Yashiro, P. A. Makela, O. C. St Cyr, R. J. MacDowall, and M. L. Kaiser. 2010. "Radio-Loud Coronal Mass Ejections without Shocks near Earth." AGU Fall Meeting Abstracts, A7-:

    Gopalswamy, N. 2010. "Corona Mass Ejections: a Summary of Recent Results." 20th National Solar Physics Meeting, 108-130:

    Michalek, G. J., N. Gopalswamy, and S. Yashiro. 2010. "Expansion speed of Coronal Mass Ejections ." EGU General Assembly Conference Abstracts, 12: 5142.

    Gopalswamy, N., and J. M. Davila. 2010. "International Space Weather Initiative (ISWI)." 20th National Solar Physics Meeting, 160:

    Gopalswamy, N., S. Yashiro, S. Akiyama, et al. S. L. Freeland, J. M. Davila, R. A. Howard, and J. Bougeret. 2010. "Estimation of coronal magnetic field using the type II radio burst associated with a fast CME." 38th COSPAR Scientific Assembly, 38: 1808.

    Davila, J. M., and N. Gopalswamy. 2010. "The International Space Weather Initiative." 38th COSPAR Scientific Assembly, 38: 4192.

    Shahin, A. A., and N. Gopalswamy. 2010. "Investigating the relation between Coronal Holes and CMEs during the Rise and Maximum and Declining Phases of the Solar Cycle 23." 38th COSPAR Scientific Assembly, 38: 1918.

    Mahrous, A., A. Radi, M. Youssef, et al. A. Faheem, S. Ahmed, and N. Gopalswamy. 2010. "Prediction of the interplanetary Coronal Mass Ejection and it's associated shock by using neural network." 38th COSPAR Scientific Assembly, 38: 1905.

    Gopalswamy, N., S. Hasan, and A. Ambastha. 2010. "Heliophysical Processes." Heliophysical Processes (Edited by N Gopalswamy; S Hasan; and A Ambastha) Astrophysics and Space Science Proceedings; 282 pages; ISBN: 978-3-642-11340-6; 2010, [10.1007/978-3-642-11341-3]

    Gopalswamy, N. 2010. "Large-Scale Solar Eruptions." Heliophysical Processes (Edited by N Gopalswamy; S Hasan; and A Ambastha) Astrophysics and Space Science Proceedings; 282 pages; ISBN: 978-3-642-11340-6; 2010, 53: 53 [10.1007/978-3-642-11341-3_4]

    Gopalswamy, N. 2010. "The CME link to geomagnetic storms." IAU Symposium, 264: 326-335 [Full Text (Link)]

    Gopalswamy, N., S. Akiyama, S. Yashiro, and P. Auml;kelä. 2010. "Coronal Mass Ejections from Sunspot and Non-Sunspot Regions." Magnetic Coupling between the Interior and Atmosphere of the Sun, 289-307: [10.1007/978-3-642-02859-5_24]

    Gopalswamy, N., H. Xie, P. Måkelå, et al. S. Akiyama, S. Yashiro, M. Kaiser, R. Howard, and J. Bougeret. 2010. "Interplanetary Shocks Lacking Type II Radio Bursts." The Astrophysical Journal, 710: 1111-1126 [ 10.1088/0004-637X/710/2/1111]

    Gopalswamy, N., P. Måkelå, H. Xie, S. Akiyama, and S. Yashiro. 2010. "Solar Sources of 'Driverless' Interplanetary Shocks." Twelfth International Solar Wind Conference, 1216: 452-458 [ 10.1063/1.3395902]

    Shanmugaraju, A., Y. Moon, K. Cho, et al. S. Bong, N. Gopalswamy, S. Akiyama, S. Yashiro, S. Umapathy, and B. Vrsnak. 2010. "Quasi-Periodic Oscillations in Lasco Coronal Mass Ejection Speeds." The Astrophysical Journal, 708: 450-455 [ 10.1088/0004-637X/708/1/450]

    Ramesh, R., C. Kathiravan, S. Kartha, and N. Gopalswamy. 2010. "Radioheliograph Observations of Metric Type II Bursts and the Kinematics of Coronal Mass Ejections." The Astrophysical Journal, 712: 188-193 [ 10.1088/0004-637X/712/1/188]

    Gopalswamy, N., and P. MÄkelÄ. 2010. "Long-duration Low-frequency Type III Bursts and Solar Energetic Particle Events." The Astrophysical Journal, 721: L62-L66 [ 10.1088/2041-8205/721/1/L62]

    Gopalswamy, N., S. Yashiro, H. Xie, S. Akiyama, and P. MÄkelÄ. 2010. "Large Geomagnetic Storms Associated with Limb Halo Coronal Mass Ejections." Advances in Geosciences - Volume 21: Solar Terrestrial (ST), 21: 71.

    Gopalswamy, N., S. Yashiro, G. Michalek, et al. H. Xie, P. MÄkelÄ, A. Vourlidas, and R. Howard. 2010. "A Catalog of Halo Coronal Mass Ejections from SOHO." Sun and Geosphere, 5: 7-16.

    Liu, Y., S. Akiyama, N. Gopalswamy, et al. J. Mason, N. Nitta, A. Tylka, S. Yashiro, and V. Yurchyshyn. 2009. "Properties of Solar Active Regions and Their Relationship with Solar Eruption: a Statistical Study." AAS/Solar Physics Division Meeting #40, 40: #09.20-.

    St Cyr, O. C., H. Xie, M. L. Mays, et al. J. M. Davila, H. R. Gilbert, S. I. Jones, W. D. Pesnell, N. Gopalswamy, J. B. Gurman, S. Yashiro, J. Wuelser, R. A. Howard, B. J. Thompson, and W. T. Thompson. 2009. "Recent STEREO Observations of Coronal Mass Ejections." AGU Fall Meeting Abstracts, A1491-:

    Gopalswamy, N. 2009. "Coronal mass ejections and space weather." Climate and Weather of the Sun-Earth System (CAWSES) Selected Papers from the 2007 Kyoto Symposium Edited by T Tsuda; R Fujii; K Shibata; and MA Geller Tokyo: TERRAPUB, 2009: [ 77-120]

    Bougeret, J., R. von Steiger, D. Webb, et al. S. Ananthakrishnan, H. Cane, N. Gopalswamy, S. Kahler, R. Lallement, B. Sanahuja, K. Shibata, M. Vandas, and F. Verheest. 2009. "Commission 49: Interplanetary Plasma and Heliosphere." Transactions of the International Astronomical Union, Series A ( 27): 124-144 [ 10.1017/S1743921308025374]

    Thompson, B. J., N. Gopalswamy, J. M. Davila, and H. Haubold. 2009. "Putting the “I” in IHY: The United Nations Report for the International Heliophysical Year 2007." Putting the “I” in IHY: The United Nations Report for the International Heliophysical Year 2007 (edited by Barbara J Thompson; Natchimuthuk Gopalswamy; Joseph M Davila and Hans J Haubold) ISBN 978-3-211-99179-4 Published by Springer, Dordrecht: The Netherlands.

    Gopalswamy, N., S. Akiyama, and S. Yashiro. 2009. "Major solar flares without coronal mass ejections." IAU Symposium, 257: 283-286 [ 10.1017/S174392130902941X]

    Yashiro, S., and N. Gopalswamy. 2009. "Statistical relationship between solar flares and coronal mass ejections." IAU Symposium, 257: 233-243 [ 10.1017/S1743921309029342]

    Davila, J. M., N. Gopalswamy, and B. J. Thompson. 2009. "Universal processes in heliophysics." IAU Symposium, 257: 11-16 [ 10.1017/S1743921309029032]

    Gopalswamy, N., and D. Webb. 2009. "Universal Heliophysical Processes." IAU Symposium, 257:

    Gopalswamy, N., and D. Webb. 2009. "Universal Heliophysical Processes (IAU S257)." Universal Heliophysical Processes (IAU S257)( by Natchimuthukonar Gopalswamy; David F Webb; Cambridge; UK: Cambridge University Press; 2009,

    Xie, H. N., N. Gopalswamy, and O. C. St Cyr. 2009. "Modeling and prediction of fast CME/shocks associated with type II bursts." IAU Symposium, 257: 489-491 [ 10.1017/S1743921309029755]

    Mäkelä, P., N. Gopalswamy, S. Yashiro, et al. S. Akiyama, H. N. Xie, and E. Valtonen. 2009. "SEPs and CMEs during cycle 23." IAU Symposium, 257: 475-477 [ 10.1017/S174392130902972X]

    Gopalswamy, N., A. Dal Lago, S. Yashiro, and S. Akiyama. 2009. "The Expansion and Radial Speeds of Coronal Mass Ejections." Central European Astrophysical Bulletin, 33: 115-124.

    Gopalswamy, N., S. Yashiro, M. Temmer, et al. J. M. Davila, W. T. Thompson, S. I. Jones, R. T. Mcateer, J. Wuelser, S. L. Freeland, and R. A. Howard. 2009. "EUV Wave Reflection from a Coronal Hole." The Astrophysical Journal, 691 (2): L123-L127 [10.1088/0004-637X/691/2/L123]

    Gopalswamy, N., P. auml;kelä, H. Xie, S. Akiyama, and S. Yashiro. 2009. "CME interactions with coronal holes and their interplanetary consequences." Journal of Geophysical Research (Space Physics), 114: 0 [10.1029/2008JA013686]

    Gopalswamy, N. 2009. "Introduction to special section on Large Geomagnetic Storms." Journal of Geophysical Research (Space Physics), 114: 0 [10.1029/2008JA014026]

    Asai, A., K. Shibata, T. Ishii, et al. M. Oka, R. Kataoka, K. Fujiki, and N. Gopalswamy. 2009. "Evolution of the anemone AR NOAA 10798 and the related geo-effective flares and CMEs." Journal of Geophysical Research (Space Physics), 114: 0 [10.1029/2008JA013291]

    Gopalswamy, N., S. Yashiro, G. Michalek, et al. G. Stenborg, A. Vourlidas, S. Freeland, and R. Howard. 2009. "The SOHO/LASCO CME Catalog." Earth Moon and Planets, 104: 295-313 [ 10.1007/s11038-008-9282-7]

    Gopalswamy, N., G. Eichhorn, T. Sakurai, and H. Haubold. 2009. "Preface to the Proceedings of the European General Assembly and the United Nations Workshop." Earth Moon and Planets, 104: 139-140 [ 10.1007/s11038-008-9278-3]

    Gopalswamy, N., S. Akiyama, S. Yashiro, G. Michalek, and R. Lepping. 2009. "Erratum to “Solar sources and geospace consequences of interplanetary magnetic clouds observed during solar cycle 23—Paper 1” [J. Atmos. Sol.-Terr. Phys. 70(2-4) (2008) 245-253]." Journal of Atmospheric and Solar-Terrestrial Physics, 71: 1005-1009 [ 10.1016/j.jastp.2008.10.016]

    Gopalswamy, N. 2009. "Halo coronal mass ejections and geomagnetic storms." Earth, Planets: and Space [Full Text (Link)] [ 61]

    Gopalswamy, N., W. Thompson, J. Davila, et al. M. Kaiser, S. Yashiro, P. auml;kelä, G. Michalek, J. Bougeret, and R. Howard. 2009. "Relation Between Type II Bursts and CMEs Inferred from STEREO Observations." Solar Physics, 259: 227-254 [ 10.1007/s11207-009-9382-1]

    Xie, O., O. Xie, O. Xie, et al. N. Gopalswamy, S. Yashiro, J. Krall, M. Kramar, and J. Davila. 2009. "On the Origin, 3D Structure and Dynamic Evolution of CMEs Near Solar Minimum." Solar Physics, 259 (1-2): 143-161 [10.1007/s11207-009-9422-x]

    Michalek, G., N. Gopalswamy, and S. Yashiro. 2009. "Expansion Speed of Coronal Mass Ejections." Solar Physics, 260: 401-406 [ 10.1007/s11207-009-9464-0]

    Gopalswamy, N. 2008. "Type II Radio Emission and Solar Energetic Particle Events." American Institute of Physics Conference Series, 1039: 196-202 [ 10.1063/1.2982445]

    Gopalswamy, N. 2008. "Origin of Geoeffective Coronal Mass Ejections during Solar Cycle 23." 37th COSPAR Scientific Assembly, 37: 1057.

    Yashiro, S., G. Michalek, S. Akiyama, N. Gopalswamy, and R. Howard. 2008. "Spatial Relationship between Solar Flares and Coronal Mass Ejections." The Astrophysical Journal, 673: 1174-1180 [ 10.1086/524927]

    Gopalswamy, N., S. Akiyama, S. Yashiro, G. Michalek, and R. Lepping. 2008. "Solar sources and geospace consequences of interplanetary magnetic clouds observed during solar cycle 23." Journal of Atmospheric and Solar-Terrestrial Physics, 70: 245-253 [ 10.1016/j.jastp.2007.08.070]

    Shanmugaraju, A., Y. Moon, K. Cho, N. Gopalswamy, and S. Umapathy. 2008. "Investigation of CME dynamics in the LASCO field of view." Astronomy and Astrophysics, 484: 511-516 [ 10.1051/0004-6361:20078978]

    Lepping, R., C. Wu, N. Gopalswamy, and D. Berdichevsky. 2008. "Average Thickness of Magnetosheath Upstream of Magnetic Clouds at 1 AU versus Solar Longitude of Source." Solar Physics, 248: 125-139 [ 10.1007/s11207-007-9111-6]

    Michalek, G., N. Gopalswamy, and S. Yashiro. 2008. "Space Weather Application Using Projected Velocity Asymmetry of Halo CMEs." Solar Physics, 248: 113-123 [ 10.1007/s11207-008-9126-7]

    Gopalswamy, N., S. Yashiro, S. Akiyama, et al. P. auml;kelä, H. Xie, M. Kaiser, R. Howard, and J. Bougeret. 2008. "Coronal mass ejections, type II radio bursts, and solar energetic particle events in the SOHO era." Annales Geophysicae, 26: 3033-3047 [ 10.5194/angeo-26-3033-2008]

    Schmidt, J., and N. Gopalswamy. 2008. "Synthetic radio maps of CME-driven shocks below 4 solar radii heliocentric distance." Journal of Geophysical Research (Space Physics), 113: 8104 [10.1029/2007JA013002]

    Davila, J., N. Gopalswamy, B. Thompson, and H. Haubold. 2008. "International Heliophysical Year 2007: A Report from the UN/NASA Workshop Bangalore - India, 27 November 1 December 2006." Earth Moon and Planets, 103: 9-24 [ 10.1007/s11038-008-9231-5]

    Yashiro, S., G. Michalek, and N. Gopalswamy. 2008. "A comparison of coronal mass ejections identified by manual and automatic methods." Annales Geophysicae, 26: 3103-3112 [ 10.5194/angeo-26-3103-2008]

    Kim, K., N. Gopalswamy, and H. Xie. 2008. "Comment on 'Prediction of the 1-AU arrival times of CME-associated interplanetary shocks: Evaluation of an empirical interplanetary shock propagation model'." Journal of Geophysical Research (Space Physics), 113: 10105 [10.1029/2008JA013030]

    Owens, M., N. Crooker, N. Schwadron, et al. T. Horbury, S. Yashiro, O. Xie, O. Xie, O. Xie, and N. Gopalswamy. 2008. "Conservation of open solar magnetic flux and the floor in the heliospheric magnetic field." Geophysical Research Letters, 35: 20108 [10.1029/2008GL035813]

    Gopalswamy, N. 2008. "Solar connections of geoeffective magnetic structures." Journal of Atmospheric and Solar-Terrestrial Physics, 70: 2078-2100 [ 10.1016/j.jastp.2008.06.010]

    Rabello Soares, M., A. Rabiu, N. Gopalswamy, et al. B. Thompson, J. Davila, and A. Sobrinho. 2008. "Outreach activities during the 2006 total solar eclipse sponsored by the International Heliophysical Year." Advances in Space Research, 42: 1792-1799 [10.1016/j.asr.2007.04.014]

    Kitamura, M., D. Wentzel, A. Henden, et al. J. Bennett, H. Al-Naimiy, A. Mathai, N. Gopalswamy, J. M. Davila, B. J. Thompson, D. Webb, and H. Haubold. 2007. "The United Nations Basic Space Science Initiative: the TRIPOD concept." IAU Special Session, 5: 277-284 [ 10.1017/S1743921307007156]

    Gopalswamy, N., J. M. Davila, B. J. Thompson, and H. Haubold. 2007. "The United Nations Basic Space Science Initiative for IHY 2007." IAU Special Session, 5: 295-302 [ 10.1017/S1743921307007181]

    Gopalswamy, N. 2007. "Energetic Phenomena on the Sun." Kodai School on Solar Physics, 919: 275-313 [ 10.1063/1.2756790]

    Gopalswamy, N. 2007. "Energetic Particles Related with Coronal and Interplanetary Shocks." Lecture Notes in Physics; Berlin Springer Verlag, 725: 139.

    Akiyama, S., S. Yashiro, and N. Gopalswamy. 2007. "The CME-productivity associated with flares from two active regions." Advances in Space Research, 39: 1467-1470 [Full Text (Link)]

    Zhang, J., I. Richardson, D. Webb, et al. N. Gopalswamy, E. Huttunen, J. Kasper, N. Nitta, W. Poomvises, B. Thompson, C. Wu, S. Yashiro, and A. Zhukov. 2007. "Solar and interplanetary sources of major geomagnetic storms (Dst <= -100 nT) during 1996-2005." Journal of Geophysical Research (Space Physics), 112: 10102 [10.1029/2007JA012321]

    Gopalswamy, N., S. Yashiro, and S. Akiyama. 2007. "Geoeffectiveness of halo coronal mass ejections." Journal of Geophysical Research (Space Physics), 112: 6112 [10.1029/2006JA012149]

    Davila, J., N. Gopalswamy, and B. Thompson. 2007. "The International Heliophysical Year." Romanian Astronomical Journal, 17: 3-13.

    Zhang, J., I. Richardson, D. Webb, et al. N. Gopalswamy, E. Huttunen, J. Kasper, N. Nitta, W. Poomvises, B. Thompson, C. Wu, S. Yashiro, and A. Zhukov. 2007. "Correction to 'Solar and interplanetary sources of major geomagnetic storms (Dst <= -100 nT) during 1996-2005'." Journal of Geophysical Research (Space Physics), 112: 12103 [10.1029/2007JA012891]

    Michalek, G., N. Gopalswamy, and H. Xie. 2007. "Width of Radio-Loud and Radio-Quiet CMEs." Solar Physics, 246: 409-414 [ 10.1007/s11207-007-9062-y]

    Michalek, G., N. Gopalswamy, and S. Yashiro. 2007. "Prediction of Space Weather Using an Asymmetric Cone Model for Halo CMEs." Solar Physics, 246: 399-408 [Full Text (Link)]

    Kozyra, J. U., K. Shibata, N. J. Fox, et al. S. Basu, A. J. Coster, J. M. Davila, N. Gopalswamy, K. Liou, G. Lu, I. R. Mann, D. Pallamraju, L. J. Paxton, W. K. Peterson, E. R. Talaat, A. T. Weatherwax, C. A. Young, and L. J. Zanetti. 2006. "Investigating the state of the Sun-Earth system during extreme events: First science results of a worldwide online conference series." AGU Fall Meeting Abstracts, A1-:

    Oung, C. A., B. J. Thompson, J. Davila, and N. Gopalswamy. 2006. "IHY-CAWSES Data base." 2nd UN/NASA Workshop on International Heliophysical Year and Basic Space Science, -:

    Davila, J. M., B. J. Thompson, and N. Gopalswamy. 2006. "The International Heliophysical Year (IHY) 2007." African Skies, 10: 4.

    Schwenn, R., J. Raymond, D. R. Alexander, et al. A. Ciaravella, N. Gopalswamy, R. A. Howard, H. Hudson, P. Kaufmann, A. Klassen, D. Maia, G. Munoz-Martinez, M. Pick, M. J. Reiner, N. Srivastava, D. Tripathi, A. Vourlidas, Y. Wang, and J. Zhang. 2006. "Coronal Observations of CMEs." Coronal Mass Ejections; Space Sciences Series of ISSI; Volume 21 ISBN 978-0-387-45086-5 Springer; 2006; 127, [10.1007/978-0-387-45088-9_9]

    Yashiro, S., N. Gopalswamy, S. Akiyama, and R. A. Howard. 2006. "Associations of Coronal Mass Ejections as a function of X-ray Flare Properties." 36th COSPAR Scientific Assembly, 36: 1778.

    Akiyama, S., N. Gopalswamy, and S. Yashiro. 2006. "The CME-productivity associated with flares from two ARs." 36th COSPAR Scientific Assembly, 36: 556.

    Haubold, H., B. J. Thompson, H. Al-Naimiy, et al. J. M. Davila, N. Gopalswamy, K. Groves, and D. Scherrer. 2006. "The IHY/United Nations Distributed Observatory Development Program." 36th COSPAR Scientific Assembly, 36: 3304.

    Gopalswamy, N., J. M. Davila, and B. J. Thompson. 2006. "International coordinated efforts for IHY 2007." 36th COSPAR Scientific Assembly, 36: 2743.

    Gopalswamy, N., S. Yashiro, and S. Akiyama. 2006. "Geoeffectiveness of CMEs: A simple analysis using halo CMEs from SOHO." 36th COSPAR Scientific Assembly, 36: 2723.

    Asai, A., T. Ishii, K. Shibata, and N. Gopalswamy. 2006. "Anemone structure of AR NOAA 10798 and related geo-effective flares and CMEs." 36th COSPAR Scientific Assembly, 36: 2406.

    Tsurutani, B., R. McPherron, W. D. Alarcon, et al. G. Lu, N. Gopalswamy, and F. Guarnieri. 2006. "Magnetic Storms Caused by Corotating Solar Wind Streams." Recurrent Magnetic Storms: Corotating Solar Wind, 167: 1.

    McPherron, R., W. D. Alarcon, G. Lu, H. eacute;, and N. Gopalswamy. 2006. "Recurrent Magnetic Storms: Corotating Solar Wind Streams Geophysical Monograph 167." Recurrent Magnetic Storms: Corotating Solar Wind, 167:

    Gopalswamy, N., and A. Bhattacharyya. 2006. "Solar Influence on the Heliosphere and Earth's Environment: Recent Progress and Prospects." Proceedings of the ILWS Workshop,

    Tsurutani, B., R. McPherron, W. D. Alarcon, et al. G. Lu, J. Sobral, and N. Gopalswamy. 2006. "Preface." Recurrent Magnetic Storms: Corotating Solar Wind, 167: 7 [10.1029/167GM01]

    Macdowall, R. J., N. Gopalswamy, M. L. Kaiser, et al. L. Demaio, S. Bale, J. W. Hewitt, J. Kasper, A. Lazarus, R. A. Howard, D. L. Jones, M. J. Reiner, and K. Weiler. 2006. "Microsat and Lunar-Based Imaging of Radio Bursts." Planetary Radio Emissions VI, 491:

    Davila, J. M., N. Gopalswamy, and B. J. Thompson. 2006. "Preparing for the International Heliophysical Year (IHY) 2007." Proceedings of the ILWS Workshop, 231:

    Gopalswamy, N., S. Yashiro, and S. Akiyama. 2006. "Coronal mass ejections and space weather due to extreme events." Proceedings of the ILWS Workshop, 79:

    Webb, D., and N. Gopalswamy. 2006. "Coronal mass ejections and space weather." Proceedings of the ILWS Workshop, 71:

    Davila, J. M., B. J. Thompson, and N. Gopalswamy. 2006. "Planning the International Heliophysical Year (IHY)." United Nations Programme on Space Applications, 17: 37.

    Asai, A., T. Ishii, K. Shibata, and N. Gopalswamy. 2006. "Anemone structure of Active Region NOAA 10798 and related geo-effective flares/ CMEs." IAU Joint Discussion, 3:

    Gopalswamy, N., S. Yashiro, M. L. Kaiser, and J. Bougeret. 2006. "Solar Energetic Particles and CME-driven Shocks." IAU Joint Discussion, 1:

    Gopalswamy, N., S. Yashiro, and R. A. Howard. 2006. "Observational Properties of CMEs from a Decade-Long Observations by SOHO." SOHO-17 10 Years of SOHO and Beyond, 617:

    Gopalswamy, N. 2006. "United Nations Basic Space Science Initiative Programme for the International Heliophysical Year 2007." United Nations Programme on Space Applications, 17: 47.

    Gopalswamy, N., R. J. Macdowall, M. L. Kaiser, et al. L. Demaio, S. Bale, R. A. Howard, D. L. Jones, J. Kasper, N. Kassim, J. Lazio, K. Weiler, and M. J. Reiner. 2006. "Mission Concepts for Spacecraft and Lunar-based Radio Source Imaging at Frequencies below the Ionospheric Cutoff." IAU Joint Discussion, 12:

    Gopalswamy, N., R. J. Macdowall, M. L. Kaiser, et al. S. Bale, M. Maksimovic, and J. Bougeret. 2006. "Scientific Justification For The Low- Frequency Radio Measurements By The Solar Orbiter Mission." Second Solar Orbiter Workshop, 641:

    Gopalswamy, N., J. Davila, B. Thompson, and H. Haubold. 2006. "The United Nations Basic Space Science Initiative for IHY 2007." IAU Special Session, 5:

    Webb, D., and N. Gopalswamy. 2006. "The IHY Program and Associated IAU Activities." IAU Special Session, 5:

    Young, C. A., B. J. Thompson, J. M. Davila, and N. Gopalswamy. 2006. "IHY-CAWSES Data base." 2nd UN/NASA Workshop on International Heliophysical Year and Basic Space Science,

    Gopalswamy, N. 2006. "General Discussion on Donor Programs." 2nd UN/NASA Workshop on International Heliophysical Year and Basic Space Science,

    Gopalswamy, N. 2006. "General Discussion on Donor Programs N Gopalswamy." 2nd UN/NASA Workshop on International Heliophysical Year and Basic Space Science,

    Gopalswamy, N. 2006. "Coronal Mass Ejections in the Heliosphere." 2nd UN/NASA Workshop on International Heliophysical Year and Basic Space Science,

    Gopalswamy, N., J. M. Davila, B. J. Thompson, and H. Haubold. 2006. "IHY/UNBSS Program: Success Stories." 2nd UN/NASA Workshop on International Heliophysical Year and Basic Space Science,

    Gopalswamy, N. 2006. "Radio Observations of Solar Eruptions." Solar Physics with the Nobeyama Radioheliograph, 81-94:

    Gopalswamy, N. 2006. "Coronal Mass Ejections and Type II Radio Bursts." Washington DC American Geophysical Union Geophysical Monograph Series, 165: 207.

    Gopalswamy, N., R. Mewaldt, and J. Torsti. 2006. "Solar Eruptions and Energetic Particles: An Introduction." Washington DC American Geophysical Union Geophysical Monograph Series, 165: 1.

    Gopalswamy, N., R. Mewaldt, and J. Torsti. 2006. "Solar Eruptions and Energetic Particles." Washington DC American Geophysical Union Geophysical Monograph Series, 165: 10.1029/GM165.

    Xie, H., N. Gopalswamy, P. Manoharan, et al. A. Lara, S. Yashiro, and S. Lepri. 2006. "Long-lived geomagnetic storms and coronal mass ejections." Journal of Geophysical Research (Space Physics), 111: 1103 [10.1029/2005JA011287]

    Aguilar-Rodriguez, E., X. Blanco-Cano, and N. Gopalswamy. 2006. "Composition and magnetic structure of interplanetary coronal mass ejections at 1 AU." Advances in Space Research, 38: 522-527 [ 10.1016/j.asr.2005.01.051]

    Schwenn, R., J. Raymond, D. Alexander, et al. A. Ciaravella, N. Gopalswamy, R. Howard, H. Hudson, P. Kaufmann, A. Klassen, D. Maia, G. Munoz-Martinez, M. Pick, M. Reiner, N. Srivastava, D. Tripathi, A. Vourlidas, Y. Wang, and J. Zhang. 2006. "Coronal Observations of CMEs. Report of Working Group A." Space Science Reviews, 123: 127-176 [ 10.1007/s11214-006-9016-y]

    Nakagawa, T., N. Gopalswamy, and S. Yashiro. 2006. "Solar wind speed within 20 RS of the Sun estimated from limb coronal mass ejections." Journal of Geophysical Research (Space Physics), 111: 1108 [10.1029/2005JA011249]

    Gopalswamy, N., Z. cacute;, D. Maia, et al. D. R. Alexander, H. Cremades, P. Kaufmann, D. Tripathi, and Y. Wang. 2006. "The Pre-CME Sun." Space Science Reviews, 303: [10.1007/978-0-387-45088-9_13]

    Howard, T., S. Tappin, N. Gopalswamy, et al. S. Akiyama, S. Yashiro, and J. Kasper. 2006. "Comment on “Interplanetary shocks unconnected with earthbound coronal mass ejections” by T. A. Howard and S. J. Tappin." Geophysical Research Letters, 33 (11): L11108 [10.1029/2005GL024983]

    Tsurutani, B., R. McPherron, W. Gonzalez, et al. G. Lu, J. Sobral, and N. Gopalswamy. 2006. "Introduction to special section on corotating solar wind streams and recurrent geomagnetic activity." Journal of Geophysical Research (Space Physics), 111: 7 [10.1029/2006JA011745]

    Gopalswamy, N. 2006. "Properties of Interplanetary Coronal Mass Ejections." Space Science Reviews, 124: 145-168 [ 10.1007/s11214-006-9102-1]

    Lara, A., N. Gopalswamy, H. Xie, et al. E. Mendoza-Torres, R. eacute;Rez-EríQuez, and G. Michalek. 2006. "Are halo coronal mass ejections special events?" Journal of Geophysical Research (Space Physics), 111: 6107 [10.1029/2005JA011431]

    Gopalswamy, N. 2006. "Preface." Journal of Astrophysics and Astronomy, 165: 9.

    Tsurutani, B., W. Gonzalez, A. Gonzalez, et al. F. Guarnieri, N. Gopalswamy, M. Grande, Y. Kamide, Y. Kasahara, G. Lu, I. Mann, R. McPherron, F. Soraas, and V. Vasyliunas. 2006. "Corotating solar wind streams and recurrent geomagnetic activity: A review." Journal of Geophysical Research (Space Physics), 111: 7 [10.1029/2005JA011273]

    Tsurutani, B., R. McPherron, W. Gonzalez, et al. G. Lu, J. Sobral, and N. Gopalswamy. 2006. "Correction to 'Introduction to special section on corotating solar wind streams and recurrent geomagnetic activity'." Journal of Geophysical Research (Space Physics), 111: 8 [10.1029/2006JA011980]

    Riley, P., C. Schatzman, H. Cane, I. Richardson, and N. Gopalswamy. 2006. "On the Rates of Coronal Mass Ejections: Remote Solar and In Situ Observations." The Astrophysical Journal, 647: 648-653 [ 10.1086/505383]

    Gopalswamy, N. 2006. "Coronal Mass Ejections of Solar Cycle 23." Journal of Astrophysics and Astronomy, 27: 243-254 [ 10.1007/BF02702527]

    Xie, H., N. Gopalswamy, L. Ofman, et al. G. Michalek, A. Lara, and S. Yashiro. 2006. "Improved input to the empirical coronal mass ejection (CME) driven shock arrival model from CME cone models." Space Weather, 4: 10002 [10.1029/2006SW000227]

    Yashiro, S., S. Akiyama, N. Gopalswamy, and R. Howard. 2006. "Different Power-Law Indices in the Frequency Distributions of Flares with and without Coronal Mass Ejections." The Astrophysical Journal, 650: L143-L146 [ 10.1086/508876]

    Wu, C., R. Lepping, and N. Gopalswamy. 2006. "Relationships Among Magnetic Clouds, CMES, and Geomagnetic Storms." Solar Physics, 239 (1-2): 449-460 [10.1007/s11207-006-0037-1]

    Michalek, G., N. Gopalswamy, A. Lara, and S. Yashiro. 2006. "Properties and geoeffectiveness of halo coronal mass ejections." Space Weather, 4: 10003 [10.1029/2005SW000218]

    Gopalswamy, N. 2006. "Consequences of Coronal Mass Ejections in the Heliosphere." Sun and Geosphere, 1: 020000-12.

    Nitta, N., D. Reames, M. De Rosa, et al. Y. Liu, S. Yashiro, and N. Gopalswamy. 2006. "Solar Sources of Impulsive Solar Energetic Particle Events and Their Magnetic Field Connection to the Earth." ApJ, 650: 438-450 [ 10.1086/507442]

    Gopalswamy, N., H. N. Xie, S. Yashiro, and I. Usoskin. 2005. "Coronal Mass Ejections and Ground Level Enhancements." International Cosmic Ray Conference, 1: 169.

    Xie, H. N., N. Gopalswamy, P. K. Manoharan, et al. S. Yashiro, A. Lara, and S. Lepri. 2005. "CMEs and Long-Lived Geomagnetic Storms: A Case Study." Coronal and Stellar Mass Ejections, 226: 475-476 [ 10.1017/S1743921305001092]

    Gopalswamy, N., S. Yashiro, S. Krucker, and R. A. Howard. 2005. "CME Interaction and the Intensity of Solar Energetic Particle Events." Coronal and Stellar Mass Ejections, 226: 367-373 [ 10.1017/S1743921305000876]

    Macdowall, R. J., S. Bale, L. Demaio, et al. N. Gopalswamy, D. L. Jones, M. L. Kaiser, J. Kasper, M. J. Reiner, and K. Weiler. 2005. "Solar Imaging Radio Array (SIRA): a multispacecraft mission." Proc. SPIE 5659, Enabling Sensor and Platform Technologies for Spaceborne Remote Sensing, 5659: 284-292 [10.1117/12.578736]

    Aguilar-Rodriguez, E., N. Gopalswamy, R. J. Macdowall, S. Yashiro, and M. L. Kaiser. 2005. "A Study of the Drift Rate of Type II Radio Bursts at Different Wavelengths." Solar Wind 11/SOHO 16; Connecting Sun and Heliosphere, 592: 393.

    Macdowall, R. J., N. Gopalswamy, M. L. Kaiser, et al. S. Bale, L. Demaio, J. W. Hewitt, J. Kasper, A. Lazarus, R. A. Howard, D. L. Jones, M. J. Reiner, and K. Weiler. 2005. "The Solar Imaging Radio Array: Space-Based Imaging of Solar; Heliospheric; Magnetospheric; and Astrophysical Sources at Frequencies below the Ionospheric Cutoff." From Clark Lake to the Long Wavelength Array: Bill Erickson's, 345: 476.

    Gopalswamy, N. 2005. "Workshop Highlights Progress in Solar-Heliospheric Physics." EOS Transactions, 86: 525-530 [ 10.1029/2005EO500006]

    Melrose, D., J. A. Klimchuk, A. Benz, et al. I. Craig, N. Gopalswamy, R. M. Harrison, B. Kozlovsky, G. Poletto, K. Schrijver, L. van Driel-Gesztelyi, and J. Wang. 2005. "Commission 10: Solar Activity." Proceedings of the International Astronomical Union, 1 (T26A): 75-88 [10.1017/S1743921306004388]

    Wu, C., S. Wu, M. Dryer, et al. C. Fry, D. Berdichevsky, Z. Smith, T. Detman, N. Gopalswamy, R. Skoug, T. Zurbuchen, and C. Smith. 2005. "Flare-generated shock evolution and geomagnetic storms during the 'Halloween 2003 epoch': 29 October to 2 November." Journal of Geophysical Research (Space Physics), 110: 9 [10.1029/2005JA011011]

    Michalek, G., N. Gopalswamy, and S. Yashiro. 2005. "Estimation of Projection Effect of CMEs from the Onset Time of the Shock-Associated Type III Radio Burst." Acta Astronomica, 55: 151-158.

    Gopalswamy, N., A. Lara, P. Manoharan, and R. Howard. 2005. "An empirical model to predict the 1-AU arrival of interplanetary shocks." Advances in Space Research, 36: 2289-2294 [ 10.1016/j.asr.2004.07.014]

    Gopalswamy, N., L. Barbieri, G. Lu, S. Plunkett, and R. Skoug. 2005. "Introduction to the special section: Violent Sun-Earth connection events of October-November 2003." Geophysical Research Letters, 32: 3 [10.1029/2005GL022348]

    Yurchyshyn, V., S. Yashiro, V. Abramenko, H. Wang, and N. Gopalswamy. 2005. "Statistical Distributions of Speeds of Coronal Mass Ejections." The Astrophysical Journal, 619 (1): 599-603 [10.1086/426129]

    Wang, A., S. Wu, and N. Gopalswamy. 2005. "Magnetohydrodynamic analysis of January 20 2001; CME-CME interaction event." Washington DC American Geophysical Union Geophysical Monograph Series, 156: 185-195 [ 10.1029/156GM21]

    Gopalswamy, N., S. Yashiro, G. Michalek, et al. H. Xie, R. Lepping, and R. Howard. 2005. "Solar source of the largest geomagnetic storm of cycle 23." Geophysical Research Letters, 32: 12 [10.1029/2004GL021639]

    Lara, A., N. Gopalswamy, R. Oacute;pez, et al. S. Yashiro, H. Xie, and J. eacute;s-Galicia. 2005. "Coronal Mass Ejections and Galactic Cosmic-Ray Modulation." The Astrophysical Journal, 625: 441-450 [ 10.1086/428565]

    Gopalswamy, N., S. Yashiro, Y. Liu, et al. G. Michalek, A. Vourlidas, M. Kaiser, and R. Howard. 2005. "Coronal mass ejections and other extreme characteristics of the 2003 October–November solar eruptions." J. Geophys. Res., 110 (A9): A09S15 [10.1029/2004JA010958]

    Gopalswamy, N., L. Barbieri, E. Cliver, et al. G. Lu, S. Plunkett, and R. Skoug. 2005. "Introduction to violent Sun-Earth connection events of October-November 2003." Journal of Geophysical Research (Space Physics), 110: 9 [10.1029/2005JA011268]

    Yashiro, S., N. Gopalswamy, S. Akiyama, G. Michalek, and R. Howard. 2005. "Visibility of coronal mass ejections as a function of flare location and intensity." Journal of Geophysical Research (Space Physics), 110: 12 [10.1029/2005JA011151]

    Gopalswamy, N., and J. Torsti. 2005. "Introduction to special section on Solar Coronal Mass Ejections and Energetic Particles." Journal of Geophysical Research (Space Physics), 110: 12 [10.1029/2005JA011523]

    Aguilar-Rodriguez, E., N. Gopalswamy, R. MacDowall, S. Yashiro, and M. Kaiser. 2005. "A universal characteristic of type II radio bursts." Journal of Geophysical Research (Space Physics), 110: 12 [10.1029/2005JA011171]

    Gopalswamy, N., E. Aguilar-Rodriguez, S. Yashiro, et al. S. Nunes, M. Kaiser, and R. Howard. 2005. "Type II radio bursts and energetic solar eruptions." Journal of Geophysical Research (Space Physics), 110: 12 [10.1029/2005JA011158]

    Lara, A., N. Gopalswamy, R. Caballero, and S. Yashiro. 2004. "Coronal Mass Ejections and Galactic Cosmic Ray Modulation." 35th COSPAR Scientific Assembly, 35: 2926.

    Aguilar-Rodriguez, E., X. Blanco-Cano, and N. Gopalswamy. 2004. "Composition and magnetic structure of interplanetary coronal mass ejections at 1 AU." 35th COSPAR Scientific Assembly, 35: 2411.

    Gopalswamy, N. 2004. "Plasma and magnetic field of the solar wind." 35th COSPAR Scientific Assembly, 35: 2396.

    Gopalswamy, N. 2004. "Coronal Mass Ejections and Solar Particle Events in Solar Cycle 23." 35th COSPAR Scientific Assembly, 35: 2358.

    Nakagawa, T., N. Gopalswamy, S. Yashiro, and A. Matsuoka. 2004. "Estimation of solar wind speed within 20Rs of the Sun by using limb CMEs." 35th COSPAR Scientific Assembly, 35: 1632.

    Gopalswamy, N. 2004. "Interplanetary Radio Bursts." Astrophysics and Space Science Library, 314: 305 [10.1007/1-4020-2814-8_15]

    Gopalswamy, N., W. Lu, S. Yashiro, M. Shimojo, and K. Shibasaki. 2004. "Prominence eruptions and coronal mass ejection: a statistical study using microwave observations." Annual Report of the National Astronomical Observatory of Japan, 18:

    Yashiro, S., N. Gopalswamy, E. Cliver, et al. D. Reames, M. L. Kaiser, and R. A. Howard. 2004. "Association of Coronal Mass Ejections and Type II Radio Bursts with Impulsive Solar Energetic Particle Events." The Solar-B Mission and the Forefront of Solar Physics, 325: 401.

    Gopalswamy, N. 2004. "A Global Picture of CMEs in the Inner Heliosphere." The Sun and the Heliosphere as an Integrated System, 317: 201.

    Howard, R. A., R. J. Macdowall, N. Gopalswamy, et al. M. L. Kaiser, M. J. Reiner, S. Bale, D. L. Jones, J. Kasper, and K. Weiler. 2004. "Solar Imaging Radio Array (SIRA): Imaging solar and magnetospheric and astrophysical sources at < 15 MHz." Bulletin of the American Astronomical Society, 36: 1097.

    Gopalswamy, N., S. Nunes, S. Yashiro, and R. Howard. 2004. "Variability of solar eruptions during cycle 23." Advances in Space Research, 34: 391-396 [ 10.1016/j.asr.2003.10.054]

    Gopalswamy, N., M. Shimojo, W. Lu, et al. S. Yashiro, K. Shibasaki, and R. Howard. 2004. "On coronal streamer changes." Advances in Space Research, 33: 676-680 [ 10.1016/S0273-1177(03)00236-9]

    Yashiro, S., N. Gopalswamy, O. Michalek, et al. O. Michalek, O. Michalek, S. Plunkett, N. Rich, and R. Howard. 2004. "A catalog of white light coronal mass ejections observed by the SOHO spacecraft." Journal of Geophysical Research (Space Physics), 109: 7105 [10.1029/2003JA010282]

    Manoharan, P., N. Gopalswamy, S. Yashiro, et al. A. Lara, G. Michalek, and R. Howard. 2004. "Influence of coronal mass ejection interaction on propagation of interplanetary shocks." Journal of Geophysical Research (Space Physics), 109: 6109 [10.1029/2003JA010300]

    Michałek, G., N. Gopalswamy, A. Lara, and P. Manoharan. 2004. "Arrival time of halo coronal mass ejections in the vicinity of the Earth." Astronomy and Astrophysics, 423: 729-736 [ 10.1051/0004-6361:20047184]

    Vršnak, B., D. Zcaron;djak, D. Sudar, and N. Gopalswamy. 2004. "Kinematics of coronal mass ejections between 2 and 30 solar radii. What can be learned about forces governing the eruption?" Astronomy and Astrophysics, 423: 717-728 [10.1051/0004-6361:20047169]

    Emslie, A., H. Kucharek, B. Dennis, et al. N. Gopalswamy, G. Holman, G. Share, A. Vourlidas, T. Forbes, P. Gallagher, G. Mason, T. Metcalf, R. Mewaldt, R. Murphy, R. Schwartz, and T. Zurbuchen. 2004. "Energy partition in two solar flare/CME events." Journal of Geophysical Research (Space Physics), 109: 10104 [10.1029/2004JA010571]

    Gopalswamy, N. 2004. "Recent advances in the long-wavelength radio physics of the Sun." Planetary and Space Science, 52: 1399-1413 [ 10.1016/j.pss.2004.09.016]

    Gopalswamy, N., S. Yashiro, S. Krucker, G. Stenborg, and R. Howard. 2004. "Intensity variation of large solar energetic particle events associated with coronal mass ejections." Journal of Geophysical Research (Space Physics), 109: 12105 [10.1029/2004JA010602]

    Gopalswamy, N. 2003. "Recent advances in long-wavelength radio physics of the Sun." EGS - AGU - EUG Joint Assembly, 4473:

    Gopalswamy, N. 2003. "Coronal mass ejections as a source of space Weather." EGS - AGU - EUG Joint Assembly, 4456:

    Macdowall, R. J., N. Gopalswamy, and M. L. Kaiser. 2003. "Low frequency radio astronomy from space: the Solar Radio Imaging Array." EGS - AGU - EUG Joint Assembly, 12863:

    González-Esparza, J., A. Lara, A. Aacute;n, and N. Gopalswamy. 2003. "A Numerical Study on the Evolution of CMEs and Shocks in the Interplanetary Medium." Solar Wind Ten, 679: 206-209 [ 10.1063/1.1618578]

    Gopalswamy, N., S. Yashiro, G. A. Stenborg, and R. A. Howard. 2003. "Coronal and Interplanetary Environment of Large Solar Energetic Particle Events." International Cosmic Ray Conference, 6: 3549.

    Macdowall, R. J., N. Gopalswamy, and M. L. Kaiser. 2003. "The Solar Radio Imaging Array (SIRA) microsatellite mission." EGS - AGU - EUG Joint Assembly, 12917:

    Gopalswamy, N., A. Lara, S. Yashiro, S. M. Nunes, and R. A. Howard. 2003. "Coronal mass ejection activity during solar cycle 23." Solar Variability as an Input to the Earth's Environment, 535: 403-414.

    Gopalswamy, N., S. Yashiro, G. J. Michalek, et al. M. L. Kaiser, R. A. Howard, R. Leske, T. T. Von Rosenvinge, and D. Reames. 2003. "Effect of CME Interactions on the Production of Solar Energetic Particles." Solar Wind Ten, 679: 608-611 [ 10.1063/1.1618668]

    Wu, C., R. P. Lepping, and N. Gopalswamy. 2003. "Variations of magnetic clouds and CMEs with solar activity cycle." Solar Variability as an Input to the Earth's Environment, 535: 429-432.

    Vrsnak, B., D. Ruzdajak, D. Sudar, and N. Gopalswamy. 2003. "Dynamics of coronal mass ejections in the near-Sun interplanetary space." Solar Variability as an Input to the Earth's Environment, 535: 517-520.

    Ane, I., I. Ane, N. Gopalswamy, P. Manoharan, and S. Yashiro. 2003. "Comment on 'Coronal mass ejections; interplanetary ejecta and geomagnetic storms'." Geophysical Research Letters, 30: 2232 [10.1029/2003GL017562]

    Burlaga, L., D. Berdichevsky, N. Gopalswamy, R. Lepping, and T. Zurbuchen. 2003. "Merged interaction regions at 1 AU." Journal of Geophysical Research (Space Physics), 108: 1425 [10.1029/2003JA010088]

    Yashiro, S., N. Gopalswamy, G. Michalek, and R. Howard. 2003. "Properties of narrow coronal mass ejections observed with LASCO." Advances in Space Research, 32: 2631-2635 [ 10.1016/j.asr.2003.03.018]

    Gopalswamy, N., S. Yashiro, M. Kaiser, and R. Howard. 2003. "Coronal mass ejection interaction and particle acceleration during the 2001 April 14 15 events." Advances in Space Research, 32: 2613-2618 [ 10.1016/j.asr.2003.09.038]

    Gopalswamy, N. 2003. "Coronal mass ejections: Initiation and detection." Advances in Space Research, 31: 869-881 [ 10.1016/S0273-1177(02)00888-8]

    Michałek, G., N. Gopalswamy, and S. Yashiro. 2003. "A New Method for Estimating Widths, Velocities, and Source Location of Halo Coronal Mass Ejections." The Astrophysical Journal, 584: 472-478 [ 10.1086/345526]

    GonzáLez-Esparza, J., A. Lara, E. eacute;Rez-Tijerina, A. aacute;N, and N. Gopalswamy. 2003. "A numerical study on the acceleration and transit time of coronal mass ejections in the interplanetary medium." Journal of Geophysical Research (Space Physics), 108: 1039 [10.1029/2001JA009186]

    Gopalswamy, N., S. Yashiro, A. Lara, et al. M. Kaiser, B. Thompson, P. Gallagher, and R. Howard. 2003. "Large solar energetic particle events of cycle 23: A global view." Geophysical Research Letters, 30 (12): 8015 [10.1029/2002GL016435]

    Gopalswamy, N. 2003. "Solar and geospace connections of energetic particle events." Geophysical Research Letters, 30: 8013 [10.1029/2003GL017277]

    Gopalswamy, N., M. Shimojo, W. Lu, et al. S. Yashiro, K. Shibasaki, and R. Howard. 2003. "Prominence Eruptions and Coronal Mass Ejection: A Statistical Study Using Microwave Observations." The Astrophysical Journal, 586: 562-578 [ 10.1086/367614]

    Gopalswamy, N., A. Lara, S. Yashiro, and R. Howard. 2003. "Coronal Mass Ejections and Solar Polarity Reversal." The Astrophysical Journal, 598: L63-L66 [ 10.1086/380430]

    Lara, A., N. Gopalswamy, S. M. Nunes, G. Munoz, and S. Yashiro. 2003. "A statistical study of CMEs associated with metric type II bursts." Geophysical Research Letters, 11532:

    Gopalswamy, N., S. Yashiro, O. StCyr, et al. G. Lawrence, M. L. Kaiser, J. B. Gurman, and R. A. Howard. 2002. "Solar, Interplanetary, and Geospace Disturbances Associated with the April 2002 Coronal Mass Ejections." AGU Fall Meeting Abstracts, A2-:

    Gopalswamy, N., S. M. Nunes, S. Yashiro, and R. A. Howard. 2002. "Variability of solar eruptions during cycle 23." 34th COSPAR Scientific Assembly, 34:

    Gopalswamy, N., M. Shimojo, W. Lu, et al. S. Yashiro, K. Shibasaki, and R. A. Howard. 2002. "Origin of coronal streamer distention." 34th COSPAR Scientific Assembly, 34:

    Gopalswamy, N., A. Lara, P. K. Manoharan, and R. A. Howard. 2002. "An empirical model to predict the 1-AU arrival of interplanetary shocks." 34th COSPAR Scientific Assembly, 34:

    Gopalswamy, N., S. Yashiro, M. L. Kaiser, D. Reames, and R. A. Howard. 2002. "Colliding coronal mass ejections and particle acceleration." 34th COSPAR Scientific Assembly, 34:

    Manoharan, P. K., N. Gopalswamy, S. Yashiro, and R. A. Howard. 2002. "Propagation of coronal mass ejections from Sun to 1 AU." 34th COSPAR Scientific Assembly, 34:

    Thompson, B. J., D. Biesecker, and N. Gopalswamy. 2002. "Phenomena Associated with EIT Waves." 34th COSPAR Scientific Assembly, 34:

    Yashiro, S., N. Gopalswamy, and R. A. Howard. 2002. "Properties of Narrow Coronal Mass Ejections Observed with LASCO." 34th COSPAR Scientific Assembly, 34:

    Gopalswamy, N. 2002. "Space Weather Study Using Combined Coronagraphic and in Situ Observations." Space Weather Study Using Multipoint Techniques, 39:

    Gopalswamy, N., S. Yashiro, G. J. Michalek, et al. M. L. Kaiser, R. A. Howard, and J. Bougeret. 2002. "Statistical Properties of Radio-Rich Coronal Mass Ejections." Solar-Terrestrial Magnetic Activity and Space Environment, 169:

    Gopalswamy, N. 2002. "Relation Between Coronal Mass Ejections and their Interplanetary Counterparts." Solar-Terrestrial Magnetic Activity and Space Environment, 157-:

    Wu, S., A. Wang, and N. Gopalswamy. 2002. "MHD modelling of CME and CME interactions in a bi-modal solar wind: a preliminary analysis of the 20 January 2001 two CMEs interaction event." SOLMAG 2002 Proceedings of the Magnetic Coupling of the Solar Atmosphere Euroconference, 505: 227-230.

    Michalek, G. J., N. Gopalswamy, and S. Yashiro. 2002. "A new possibility to estimate the width, source location and velocity of halo CMEs." From Solar Min to Max: Half a Solar Cycle with SOHO, 508: 453-456.

    Michalek, G. J., N. Gopalswamy, M. J. Reiner, et al. S. Yashiro, M. L. Kaiser, and R. A. Howard. 2002. "Estimation of projection effect of CMEs from the onset time of shock-associated type III radio burst." From Solar Min to Max: Half a Solar Cycle with SOHO, 508: 449-452.

    Gopalswamy, N. 2002. "CMEs: observations of all kinds." Observational Challenges for the Next Decade of Solar Magnetohydrodynamics,

    Michalek, G. J., N. Gopalswamy, and E. Chane. 2002. "Arrival time of coronal mass ejections." Solar Variability: From Core to Outer Frontiers, 506: 177-180.

    Gopalswamy, N., S. Yashiro, M. Kaiser, R. Howard, and J. Bougeret. 2002. "Interplanetary radio emission due to interaction between two coronal mass ejections." Geophysical Research Letters, 29: 1265 [10.1029/2001GL013606]

    Vršnak, B., and N. Gopalswamy. 2002. "Influence of the aerodynamic drag on the motion of interplanetary ejecta." Journal of Geophysical Research (Space Physics), 107: 1019 [10.1029/2001JA000120]

    Gopalswamy, N., and M. Kaiser. 2002. "Solar eruptions and long wavelength radio bursts: The 1997 May 12 event." Advances in Space Research, 29: 307-312 [10.1016/S0273-1177(01)00589-0]

    Filippov, B., N. Gopalswamy, and A. Lozhechkin. 2002. "Motion of an Eruptive Prominence in the Solar Corona." Astronomy Reports, 46: 417-423 [10.1134/1.1479428]

    Moon, Y., G. Choe, H. Wang, et al. Y. Park, N. Gopalswamy, G. Yang, and S. Yashiro. 2002. "A Statistical Study of Two Classes of Coronal Mass Ejections." ApJ, 581 (1): 694-702 [10.1086/344088]

    Brosius, J., E. Landi, J. Cook, et al. J. Newmark, N. Gopalswamy, and A. Lara. 2002. "Measurements of Three-dimensional Coronal Magnetic Fields from Coordinated Extreme-Ultraviolet and Radio Observations of a Solar Active Region Sunspot." The Astrophysical Journal, 574: 453-466 [ 10.1086/340923]

    Gopalswamy, N., S. Yashiro, G. Lstrok;ek, et al. M. Kaiser, R. Howard, D. Reames, R. Leske, and T. von Rosenvinge. 2002. "Interacting Coronal Mass Ejections and Solar Energetic Particles." ApJ (Letters), 572: L103-L107 [ 10.1086/341601]

    Yashiro, S., N. Gopalswamy, O. C. StCyr, et al. G. Lawrence, G. Michalek, C. A. Young, S. P. Plunkett, and R. A. Howard. 2001. "Development of SOHO/LASCO CME Catalog and Study of CME Trajectories." AGU Spring Meeting Abstracts, 31-:

    Filippov, B., N. Gopalswamy, and A. Lozhechkin. 2001. "Non-radial motion of eruptive filaments." Solar Physics, 203: 119-130.

    Vršnak, B., H. Aurass, J. cacute;, and N. Gopalswamy. 2001. "Band-splitting of coronal and interplanetary type II bursts. I. Basic properties." Astronomy and Astrophysics, 377: 321-329 [ 10.1051/0004-6361:20011067]

    Gopalswamy, N., S. Yashiro, M. Kaiser, R. Howard, and J. Bougeret. 2001. "Radio Signatures of Coronal Mass Ejection Interaction: Coronal Mass Ejection Cannibalism?" The Astrophysical Journal, 548: L91-L94 [ 10.1086/318939]

    Moran, T., N. Gopalswamy, I. Dammasch, and K. Wilhelm. 2001. "A multi-wavelength study of solar coronal-hole regions showing radio enhancements." Astronomy and Astrophysics, 378: 1037-1045 [ 10.1051/0004-6361:20010569]

    Gopalswamy, N., O. C. St Cyr, M. L. Kaiser, and S. Yashiro. 2001. "X-ray Ejecta, White-Light CMEs and a Coronal Shock Wave." Solar Physics, 203: 149-163.

    Reiner, M., M. Kaiser, N. Gopalswamy, et al. H. Aurass, G. Mann, A. Vourlidas, and M. Maksimovic. 2001. "Statistical analysis of coronal shock dynamics implied by radio and white-light observations." Journal of Geophysical Research, 106: 25279-25290 [10.1029/2000JA004024]

    Gopalswamy, N., A. Lara, M. Kaiser, and J. Bougeret. 2001. "Near-Sun and near-Earth manifestations of solar eruptions." Journal of Geophysical Research, 106: 25261-25278 [10.1029/2000JA004025]

    Gopalswamy, N. 2001. "Introduction to special section: Global picture of solar eruptive events." Journal of Geophysical Research, 106: 25135-25140 [ 10.1029/2001JA000071]

    Gopalswamy, N., S. Yashiro, M. Kaiser, R. Howard, and J. Bougeret. 2001. "Characteristics of coronal mass ejections associated with long-wavelength type II radio bursts." Journal of Geophysical Research, 106: 29219-29230 [10.1029/2001JA000234]

    Gopalswamy, N., A. Lara, S. Yashiro, M. Kaiser, and R. Howard. 2001. "Predicting the 1-AU arrival times of coronal mass ejections." Journal of Geophysical Research, 106: 29207-29218 [10.1029/2001JA000177]

    Gopalswamy, N., M. L. Kaiser, J. Sato, and M. Pick. 2000. "Shock Wave and EUV Transient During a Flare." High Energy Solar Physics Workshop - Anticipating Hess!, 206: 351.

    Lara, A., and N. Gopalswamy. 2000. "Time Evolution of Microwave and Hard X-ray Spectral Indexes." High Energy Solar Physics Workshop - Anticipating Hess!, 206: 355.

    Jones, D. L., R. Allen, J. Basart, et al. T. Bastian, W. Blume, J. Bougeret, B. Dennison, M. D. Desch, K. Dwarakanath, W. Erickson, W. M. Farrell, D. Finley, N. Gopalswamy, R. A. Howard, M. L. Kaiser, N. Kassim, T. Kuiper, R. J. Macdowall, M. Mahoney, R. Perley, R. Preston, M. J. Reiner, P. Rodriguez, R. Stone, S. Unwin, K. Weiler, G. Woan, and R. Woo. 2000. "Space VLBI at Low Frequencies." Astrophysical Phenomena Revealed by Space VLBI, 265-268:

    Lara, A., N. Gopalswamy, and C. DeForest. 2000. "Correction to “Change in photospheric magnetic flux during coronal mass ejections”." Geophysical Research Letters, 27: 1863-1863 [ 10.1029/2000GL900009]

    Gopalswamy, N., Y. Hanaoka, and H. Hudson. 2000. "Structure and Dynamics of the Corona Surrounding an Eruptive Prominence." Advances in Space Research, 25: 1851-1854 [ 10.1016/S0273-1177(99)00597-9]

    Jones, D., R. Allen, J. Basart, et al. T. Bastian, W. Blume, J. Bougeret, B. Dennison, M. Desch, K. Dwarakanath, W. Erickson, W. Farrell, D. Finley, N. Gopalswamy, R. Howard, M. Kaiser, N. Kassim, T. Kuiper, R. MacDowall, M. Mahoney, R. Perley, R. Preston, M. Reiner, P. Rodriguez, R. Stone, S. Unwin, K. Weiler, G. Woan, and R. Woo. 2000. "The ALFA medium explorer mission." Advances in Space Research, 26 (4): 743-746 [10.1016/S0273-1177(99)01204-1]

    Gopalswamy, N., A. Lara, R. Lepping, et al. M. Kaiser, O. Berdichevsky, O. Berdichevsky, and O. Berdichevsky. 2000. "Interplanetary acceleration of coronal mass ejections." Geophysical Research Letters, 27: 145-148 [ 10.1029/1999GL003639]

    Gopalswamy, N., M. Kaiser, B. Thompson, et al. L. Burlaga, A. Szabo, A. Lara, A. Vourlidas, S. Yashiro, and J. Bougeret. 2000. "Radio-rich solar eruptive events." Geophysical Research Letters, 27: 1427-1430 [ 10.1029/1999GL003665]

    Raymond, J., O. Thompson, O. Thompson, et al. O. Thompson, N. Gopalswamy, S. Kahler, M. Kaiser, A. Lara, A. Ciaravella, M. Romoli, and R. O'Neal. 2000. "SOHO and radio observations of a CME shock wave." Geophysical Research Letters, 27: 1439-1442 [ 10.1029/1999GL003669]

    Lara, A., N. Gopalswamy, and C. DeForest. 2000. "Change in photospheric magnetic flux during coronal mass ejections." Geophysical Research Letters, 27: 1435-1438 [ 10.1029/1999GL003666]

    Jones, D., R. Allen, J. Basart, et al. T. Bastian, W. Blume, J. Bougeret, B. Dennison, M. Desch, K. Dwarakanath, W. Erickson, D. Finley, N. Gopalswamy, R. Howard, M. Kaiser, N. Kassim, T. Kuiper, R. MacDowall, M. Mahoney, R. Perley, R. Preston, M. Reiner, P. Rodriguez, R. Stone, S. Unwin, K. Weiler, G. Woan, and R. Woo. 2000. "The Astronomical Low Frequency Array: A Proposed Explorer Mission for Radio Astronomy." Washington DC American Geophysical Union Geophysical Monograph Series, 119: 339-349.

    Gopalswamy, N. 2000. "Type II Solar Radio Bursts." Washington DC American Geophysical Union Geophysical Monograph Series, 119: 123.

    Manoharan, P., M. Kojima, N. Gopalswamy, T. Kondo, and Z. Smith. 2000. "Radial Evolution and Turbulence Characteristics of a Coronal Mass Ejection." The Astrophysical Journal, 530: 1061-1070 [ 10.1086/308378]

    Thompson, B., B. Reynolds, H. Aurass, et al. N. Gopalswamy, J. Gurman, H. Hudson, O. Martin, O. Martin, and O. Martin. 2000. "Observations of the 24 September 1997 Coronal Flare Waves." Solar Physics, 193: 161-180.

    Bromage, B., D. Alexander, A. Breen, et al. J. Clegg, G. Del Zanna, C. DeForest, D. Dobrzycka, N. Gopalswamy, B. Thompson, and P. Browning. 2000. "Structure of a Large low-Latitude Coronal Hole." Solar Physics, 193: 181-193.

    Gopalswamy, N., and B. Thompson. 2000. "Early life of coronal mass ejections." Journal of Atmospheric and Solar-Terrestrial Physics, 62: 1457-1469 [ 10.1016/S1364-6826(00)00079-1]

    Nindos, A., M. Kundu, S. White, K. Shibasaki, and N. Gopalswamy. 2000. "Soft X‐Ray and Gyroresonance Emission above Sunspots." Astrophys J Suppl S, 130 (2): 485-499 [10.1086/317355]

    Gopalswamy, N., K. Shibasaki, and M. Salem. 2000. "Microwave Enhancement in Coronal Holes: Statistical Propeties." Journal of Astrophysics and Astronomy, 21: 413 [10.1007/BF02702435]

    Gopalswamy, N., M. L. Kaiser, R. J. Macdowall, et al. M. J. Reiner, B. J. Thompson, and O. C. St Cyr. 1999. "Dynamical phenomena associated with a coronal mass ejectionv." American Institute of Physics Conference Series, 471: 641-644 [ 10.1063/1.58816]

    Gopalswamy, N., K. Shibasaki, B. J. Thompson, J. B. Gurman, and C. Deforest. 1999. "Is the chromosphere hotter in coronal holes?" American Institute of Physics Conference Series, 471: 277-280 [ 10.1063/1.58801]

    Gopalswamy, N., M. L. Kaiser, and A. Lara. 1999. "“Driverless“ Shocks in the Interplanetary Medium." NASA STI/Recon Technical Report N, 11206:

    Gopalswamy, N., and K. Shibasaki. 1999. "Microwave Enhancement in Coronal Holes: Structure and Variability and Magnetic Nature." NASA STI/Recon Technical Report N, 11601:

    Gopalswamy, N., S. Yashiro, M. L. Kaiser, B. J. Thompson, and S. Plunkett. 1999. "Multi-wavelength Signatures of Coronal Mass Ejection." Proceedings of the Nobeyama Symposium, 207-210:

    Gopalswamy, N. 1999. "X-ray and Microwave Signatures of Coronal Mass Ejections." Proceedings of the Nobeyama Symposium, 141-152:

    Lara, A., N. Gopalswamy, R. eacute;rez-Enríquez, and K. Shibasaki. 1999. "17 GHz Mode Coupling in the Solar Corona." Proceedings of the Nobeyama Symposium, 83-87:

    Bastian, T., N. Gopalswamy, and K. Shibasaki. 1999. "Solar Physics with Radio Observations." Proceedings of the Nobeyama Symposium,

    Gopalswamy, N., M. L. Kaiser, and D. L. Jones. 1999. "The Astronomical Low Frequency Array (ALFA): Imaging from Space." Proceedings of the Nobeyama Symposium, 447-451:

    Thompson, O., O. Thompson, O. Thompson, et al. S. Plunkett, J. Gurman, N. Gopalswamy, H. Hudson, R. Howard, D. Michels, and J. Egrave;re. 1999. "The correspondence of EUV and white light observations of coronal mass ejections with SOHO EIT and LASCO." Washington DC American Geophysical Union Geophysical Monograph Series, 109: 31-46 [ 10.1029/GM109p0031]

    Gopalswamy, N., M. Kaiser, R. Lepping, et al. D. Berdichevsky, K. Ogilvie, S. Kahler, T. Kondo, T. Isobe, and M. Akioka. 1999. "Reply." Journal of Geophysical Research, 104: 4749-4754 [ 10.1029/98JA02832]

    Gopalswamy, N., K. Shibasaki, B. Thompson, J. Gurman, and C. DeForest. 1999. "Microwave enhancement and variability in the elephant's trunk coronal hole: Comparison with SOHO observations." Journal of Geophysical Research, 104: 9767-9780 [ 10.1029/1998JA900168]

    Biesecker, D., B. Thompson, S. Gibson, et al. D. Alexander, A. Fludra, N. Gopalswamy, J. Hoeksema, A. Lecinski, and L. Strachan. 1999. "Synoptic Sun during the first Whole Sun Month Campaign: August 10 to September 8 1996." Journal of Geophysical Research, 104: 9679-9690 [ 10.1029/1998JA900056]

    Gopalswamy, N., N. Nitta, P. Manoharan, A. Raoult, and M. Pick. 1999. "X-ray and radio manifestations of a solar eruptive event." Astronomy and Astrophysics, 347: 684-695.

    Gopalswamy, N., B. J. Thompson, and K. Shibasaki. 1998. "Comparison of Microwave and SOHO Synoptic Maps of the Sun During the Whole Sun Month 1996." Synoptic Solar Physics, 140: 401.

    Gopalswamy, N., K. Shibasaki, C. Deforest, B. Bromage, and G. Del Zanna. 1998. "Multiwavelength Observations of a Coronal Hole." Synoptic Solar Physics, 140: 363.

    Gopalswamy, N., Y. Hanaoka, M. L. Kaiser, et al. J. B. Gurman, H. Hudson, and R. A. Howard. 1998. "Birth Place of the 1998 January 21 CME." CESRA Workshop on Coronal Explosive Events,

    Gopalswamy, N., Y. Hanoka, and J. Lemen. 1998. "Radio and X-ray Investigations of Erupting Prominences (Review)." IAU Colloq 167: New Perspectives on Solar Prominences, 150: 358.

    Torres Papaqui, J., N. Gopalswamy, and J. Mendoza-Torres. 1998. "Study of the dynamics of the solar RA(7794) during october 29 1994 with VLA at 2 and 20 cm." IX Latin American Regional IAU Meeting; "Focal Points in Latin American Astronomy",

    Webb, D., E. Cliver, N. Gopalswamy, et al. O. Hudson, O. Hudson, and O. Hudson. 1998. "The solar origin of the January 1997 coronal mass ejection; magnetic cloud and geomagnetic storm." Geophysical Research Letters, 25: 2469-2472 [ 10.1029/98GL00493]

    Gopalswamy, N., Y. Hanaoka, T. Kosugi, et al. R. Lepping, J. Steinberg, S. Plunkett, R. Howard, B. Thompson, J. Gurman, G. Ho, N. Nitta, and H. Hudson. 1998. "On the relationship between coronal mass ejections and magnetic clouds." Geophysical Research Letters, 25: 2485-2488 [ 10.1029/98GL50757]

    Kaiser, M., M. Reiner, N. Gopalswamy, et al. O. Howard, O. Howard, O. Howard, B. Thompson, and J. Bougeret. 1998. "Type II radio emissions in the frequency range from 1-14 MHz associated with the April 7, 1997 solar event." Geophysical Research Letters, 25 (14): 2501-2504 [10.1029/98GL00706]

    Gopalswamy, N., M. Kaiser, R. Lepping, et al. S. Kahler, K. Ogilvie, D. Berdichevsky, T. Kondo, T. Isobe, and M. Akioka. 1998. "Origin of coronal and interplanetary shocks - A new look with WIND spacecraft data." Journal of Geophysical Research, 103: 307 [10.1029/97JA02634]

    Lara, A., N. Gopalswamy, M. Kundu, et al. R. Perez-Enriquez, H. Koshiishi, and S. Enome. 1998. "Microwave and Soft X-ray Study of Solar Active Region Evolution." Solar Physics, 178: 353-378.

    Zhang, J., N. Gopalswamy, M. Kundu, E. Schmahl, and J. Lemen. 1998. "Spatial Structure of Solar Coronal Magnetic Loops Revealed by Transient Microwave Brightenings." Solar Physics, 180: 285-298.

    Gopalswamy, N., and Y. Hanaoka. 1998. "Coronal Dimming Associated with a Giant Prominence Eruption." The Astrophysical Journal, 498: L179 [10.1086/311330]

    Gopalswamy, N., M. Kundu, A. Lara, et al. Y. Hanaoka, S. Enome, J. Lemen, and M. Akioka. 1997. "Three Part Structure of a CME Revealed by X-Ray and Microwave Observations." Magnetic Reconnection in the Solar Atmosphere, 111: 393.

    Gopalswamy, N., Y. Hanaoka, M. Kundu, et al. K. Shibasaki, H. Koshiishi, S. Enome, and J. Lemen. 1997. "A Giant Prominence Eruption Observed by Nobeyama Radioheliograph and YOHKOH Spacecraft." IAU Joint Discussion, 19:

    Plunkett, S., N. Gopalswamy, M. Kundu, et al. R. A. Howard, B. J. Thompson, J. B. Gurman, R. P. Lepping, H. Hudson, N. Nitta, Y. Hansoka, T. Kosugi, and J. Burkepile. 1997. "A Multi-Wavelength Analysis of the February 6/7 1997 Coronal Mass Ejection." Fifth SOHO Workshop: The Corona and Solar Wind Near Minimum Activity, 404: 615.

    Gopalswamy, N., Y. Hanaoka, M. Kundu, et al. S. Enome, J. Lemen, M. Akioka, and A. Lara. 1997. "Radio and X-Ray Studies of a Coronal Mass Ejection Associated with a Very Slow Prominence Eruption." The Astrophysical Journal, 475: 348 [10.1086/303519]

    Gopalswamy, N., M. Kundu, P. Manoharan, et al. A. Raoult, N. Nitta, and P. Zarka. 1997. "X-Ray and Radio Studies of a Coronal Eruption: Shock Wave and Plasmoid and Coronal Mass Ejection." The Astrophysical Journal, 486: 1036 [10.1086/304556]

    Lee, J., S. White, N. Gopalswamy, and M. Kundu. 1997. "Signatures of Coronal Currents in Microwave Images." Solar Physics, 174: 175-190.

    Sawant, H., R. Rosa, J. Cecatto, and N. Gopalswamy. 1997. "Source Parameters for Impulsive Bursts Observed in the Range 18-23 GHz." Solar Physics, 171: 155-159.

    Gopalswamy, N., J. Zhang, M. Kundu, E. Schmahl, and J. Lemen. 1997. "Fast Time Structure during Transient Microwave Brightenings: Evidence for Nonthermal Processes." The Astrophysical Journal, 491: L115 [10.1086/311063]

    Gopalswamy, N., M. Kundu, A. Lara, et al. Y. Hanaoka, S. Enome, J. Lemen, and M. Akioka. 1996. "Three part structure of a CME revealed by X-ray and microwave observations." Astronomical Society of the Pacific Conference Series, 111: 393-397.

    Hildebrandt, J., A. Kruger, N. Gopalswamy, J. Raulin, and M. Kundu. 1996. "VLA Observations of a Solar Active Region at 62 and 35 CM Wavelength Compared with Model Calculations." Radio Emission from the Stars and the Sun, 93: 369.

    Gopalswamy, N., M. Kundu, Y. Hanaoka, S. Enome, and J. Lemen. 1996. "Radio and X-ray manifestations of a bright point flare." American Institute of Physics Conference Series, 374: 408-415 [ 10.1063/1.50975]

    Gopalswamy, N., M. Kundu, Y. Hanaoka, S. Enome, and J. Lemen. 1996. "Detection of Large-Scale Radio Structure and Plasma Flow during a Solar Bright Point Flare." The Astrophysical Journal, 457: L117 [10.1086/309905]

    Gopalswamy, N., M. Kundu, Y. Hanaoka, et al. S. Enome, J. Lemen, and M. Akioka. 1996. "Yohkoh/SXT observations of a coronal mass ejection near the solar surface." New Astronomy, 1: 207-213 [ 10.1016/S1384-1076(96)00016-4]

    Gopalswamy, N. 1996. "Coronal Disconnection Events and Metric Radio Emisison." Astrophysics and Space Science, 243: 129 [10.1007/BF00644042]

    Gopalswamy, N., J. Raulin, M. Kundu, et al. N. Nitta, J. Lemen, R. Herrmann, D. Zarro, and T. Kosugi. 1995. "VLA and YOHKOH Observations of an M1.5 Flare." The Astrophysical Journal, 455: 715 [10.1086/176618]

    Gopalswamy, N., and M. Kundu. 1995. "Surprises in the Radio Signatures of CMEs." Coronal Magnetic Energy Releases, 444: 223 [10.1007/3-540-59109-5_52]

    Gopalswamy, N. 1995. "A Study of Active Region Magnetic Field Structure Using VLA-Radio YOHKOH X-Ray and Mess-Optical Observations." Journal of Astrophysics and Astronomy Supplement, 16: 381.

    Gopalswamy, N. 1994. "A Study of Active Region Magnetic Fields Using Radio and X-ray and Optical Observations." Solar Active Region Evolution: Comparing Models with Observations, 68: 395.

    Gopalswamy, N. 1994. "A Study of Active Region Magnetic Fields Using Radio, X-ray and Optical Observations." Solar Active Region Evolution: Comparing Models with Observations, 68: 395.

    Gopalswamy, N., E. J. Schmahl, M. Kundu, et al. J. Lemen, K. T. Strong, R. Canfield, and J. L. De La Beaujardiere. 1994. "Study of Active Region Magnetic Field Structures Using VLA Radio, YOHKOH X-ray and MEES Optical Observations." Proceedings of Kofu Symposium, 347-351:

    Kundu, M., S. H. White, N. Gopalswamy, and J. Lim. 1994. "Interferometry of Solar Flares at 3-mm Wavelength." Infrared Solar Physics, 154: 131.

    Kundu, M., S. White, N. Gopalswamy, and J. Lim. 1994. "Millimeter, microwave, hard X-ray, and soft X-ray observations of energetic electron populations in solar flares." ApJS, 90: 599-610 [10.1086/191881]

    Schmahl, E., N. Gopalswamy, and M. Kundu. 1994. "Three-dimensional coronal structures using Clark Lake observations." Solar Physics, 150: 325-337 [ 10.1007/BF00712894]

    Gopalswamy, N., M. Kundu, A. Raoult, and M. Pick. 1994. "Non-radial magnetic field structures in the solar corona." Solar Physics, 150: 317-323 [ 10.1007/BF00712893]

    Sawant, H., R. Rosa, J. Cecatto, and N. Gopalswamy. 1994. "Solar simple bursts observed with spectral resolution in the 18-23 GHz range." The Astrophysical Journal Supplement Series, 90: 693-695 [ 10.1086/191891]

    Gopalswamy, N., T. Payne, E. Schmahl, et al. M. Kundu, J. Lemen, K. Strong, R. Canfield, and J. de La Beaujardiere. 1994. "Transient microwave brightenings in solar active regions: Comparison between VLA and YOHKOH observations." ApJL, 437: 522-528 [10.1086/175015]

    Gopalswamy, N., O. Kundu, O. Kundu, and O. Kundu. 1994. "Nonthermal radio emission associated with a coronal disconnection event." The Astrophysical Journal, 424: L135-L138 [ 10.1086/187293]

    Schmahl, E., N. Gopalswamy, and M. Kundu. 1994. "Three dimensional coronal structures using Clark Lake Observations." Advances in Space Research, 14: 65 [10.1016/0273-1177(94)90163-5]

    Gopalswamy, N., V. Zheleznyakov, S. White, and M. Kundu. 1994. "Polarization features of solar radio emission and possible existence of current sheets in active regions." Solar Physics, 155 (2): 339-350 [10.1007/BF00680599]

    Brosius, J. W., J. M. Davila, H. H. Jones, et al. W. T. Thompson, R. J. Thomas, G. D. Holman, S. H. White, N. Gopalswamy, and M. Kundu. 1993. "Analysis of EUV, Microwave and Magnetic Field Observations of Solar Plage." IAU Colloq 141: The Magnetic and Velocity Fields of Solar Active Regions, 46: 291- 294.

    Brosius, J., J. Davila, W. Thompson, et al. R. Thomas, G. Holman, N. Gopalswamy, S. White, M. Kundu, and H. Jones. 1993. "Simultaneous observations of solar plage with the solar extreme ultraviolet rocket telescope and spectrograph (SERTS), the VLA, and the Kitt Peak magnetograph." The Astrophysical Journal, 411: 410-417 [10.1086/172843]

    Gopalswamy, N., and M. Kundu. 1993. "Thermal and nonthermal emissions during a coronal mass ejection." Solar Physics, 143: 327-343 [ 10.1007/BF00646491]

    Subramanian, K., N. Gopalswamy, and C. Sastry. 1993. "A new investigation of microbursts at meter-decameter wavelengths." Solar Physics, 143: 301-316 [ 10.1007/BF00646489]

    Gopalswamy, N. 1993. "Plasma emission from isotropic Langmuir turbulence - Are radio microbursts structureless?" The Astrophysical Journal, 402: 326-333 [ 10.1086/172136]

    Gopalswamy, N., and M. Kundu. 1993. "Structure of a fast coronal mass ejection from radio observations.." Advances in Space Research, 13: 75-78.

    Kundu, M., S. White, N. Gopalswamy, and J. Lim. 1993. "Interferometric observations of solar flares at 3 mm wavelength." Advances in Space Research, 13 (9): 289-293 [10.1016/0273-1177(93)90492-T]

    Kundu, M., S. H. White, N. Gopalswamy, and J. Lim. 1992. "Millimeter and hard X ray/gamma ray observations of solar flares during the June 1991 GRO campaign." NASA Conference Publication, 3137: 502-513.

    Schmahl, E. J., N. Gopalswamy, and M. Kundu. 1992. "Models of coronal streamers at meter-decameter wavelengths." Coronal Streamers; Coronal Loops; and Coronal and Solar Wind Composition, 348: 145-148.

    Gopalswamy, N., E. J. Schmahl, and M. Kundu. 1992. "Observations of stationary radio sources: Coronal polar plumes?" Coronal Streamers; Coronal Loops; and Coronal and Solar Wind Composition, 348: 113-115.

    Gopalswamy, N., and M. Kundu. 1992. "Are coronal type II shocks piston driven?" Particle Acceleration in Cosmic Plasmas, 264: 257-260 [ 10.1063/1.42737]

    Gopalswamy, N., and M. Kundu. 1992. "Largescale Structures Associated with Eruptive Flares and Radio Waves." IAU Colloq 133: Eruptive Solar Flares, 399: 207 [10.1007/3-540-55246-4_100]

    Kundu, M., and N. Gopalswamy. 1992. "Meter-decameter radio emission associated with a coronal mass ejection." IAU Colloq 133: Eruptive Solar Flares, 399: 268-271 [ 10.1007/3-540-55246-4_108]

    White, S., M. Kundu, and N. Gopalswamy. 1992. "High dynamic range multifrequency radio observations of a solar active region." ApJS, 78: 599-617 [10.1086/191641]

    Gopalswamy, N., and M. Kundu. 1992. "Estimation of the mass of a coronal mass ejection from radio observations." The Astrophysical Journal, 390: L37-L39 [ 10.1086/186366]

    Gopalswamy, N., and M. Kundu. 1991. "Association of a Type IV Burst with a Slow CME." Max '91/SMM Solar Flares: Observations and Theory, 139:

    Schmahl, E. J., N. Gopalswamy, and M. Kundu. 1991. "VLA Observations of Active Region 5555 During the 1st Max'91 Campaign." Max '91/SMM Solar Flares: Observations and Theory, 23:

    White, S., M. Kundu, and N. Gopalswamy. 1991. "Strong magnetic fields and inhomogeneity in the solar corona." The Astrophysical Journal, 366: L43-L46 [10.1086/185905]

    Nitta, N., S. White, M. Kundu, et al. N. Gopalswamy, G. Holman, J. Brosius, J. Schmelz, J. Saba, and K. Strong. 1991. "Coronal magnetic structures observing campaign. I - Simultaneous microwave and soft X-ray observations of active regions at the solar limb." The Astrophysical Journal, 374: 374-385 [10.1086/170128]

    Gopalswamy, N., S. White, and M. Kundu. 1991. "Large-scale features of the sun at 20 centimeter wavelength." The Astrophysical Journal, 379: 366-380 [10.1086/170512]

    Gopalswamy, N. 1990. "Clark Lake radio observations of coronal mass ejections." Basic Plasma Processes on the Sun, 142: 495-500.

    White, S. H., M. Kundu, N. Gopalswamy, and E. J. Schmahl. 1990. "The sun at the VLA's metric and decimetric wavelengths." Basic Plasma Processes on the Sun, 142: 523.

    Thejappa, G., N. Gopalswamy, and M. Kundu. 1990. "Microbursts at meter-decameter wavelengths." Solar Physics, 142: 521.

    Gopalswamy, N. 1990. "A note on the emission mechanism of storm radiation." Solar Physics, 126: 367-370 [ 10.1007/BF00153056]

    Gopalswamy, N., and M. Kundu. 1990. "Some problems in low frequency solar radio physics." Low Frequency Astrophysics from Space, 362: 97-101 [ 10.1007/3-540-52891-1_112]

    Gopalswamy, N., and M. Kundu. 1990. "The observation of an unusually fast type IV plasmoid." The Astrophysical Journal, 365: L31-L34 [ 10.1086/185881]

    Kundu, M., and N. Gopalswamy. 1990. "Filament eruption and storm radiation at meter-decameter wavelengths." Solar Physics, 129: 133-152 [ 10.1007/BF00154370]

    Gopalswamy, N., and M. Kundu. 1990. "Multiple moving magnetic structures in the solar corona." Solar Physics, 128: 377-397 [ 10.1007/BF00838474]

    Kundu, M., S. White, N. Gopalswamy, J. Bieging, and G. Hurford. 1990. "First high spatial resolution interferometric observations of solar flares at millimeter wavelengths." ApJL, 358: L69-L73 [10.1086/185781]

    Gopalswamy, N., and M. Kundu. 1989. "Recent results of meter-decameter wave observations of solar flares." Solar and Stellar Flares Poster Papers, 185:

    Kundu, M., S. H. White, N. Gopalswamy, and J. Bieging. 1989. "First interferometric observations with arc-sec resolution of solar radio bursts at millimeter wavelengths." Developments in Observations and Theory for Solar Cycle 22, 119-130:

    Gopalswamy, N., and M. Kundu. 1989. "Radioheliograph and white-light coronagraph studies of a coronal mass ejection event." Solar Physics, 122: 145-173 [ 10.1007/BF00162832]

    Gopalswamy, N., and M. Kundu. 1989. "A slowly moving plasmoid associated with a filament eruption." Solar Physics, 122: 91-110 [ 10.1007/BF00162829]

    Kundu, M., E. Schmahl, N. Gopalswamy, and S. White. 1989. "Three dimensional structures of coronal streamers, holes and CME plasmoids from multifrequency imaging observations." Advances in Space Research, 9 (4): 41-45 [10.1016/0273-1177(89)90092-6]

    Kundu, M., N. Gopalswamy, S. White, et al. P. Cargill, E. Schmahl, and E. Hildner. 1989. "The radio signatures of a slow coronal mass ejection - Electron acceleration at slow-mode shocks?" The Astrophysical Journal, 347: 505-513 [10.1086/168140]

    Kundu, M., N. Gopalswamy, N. Nitta, et al. E. J. Schmahl, S. H. White, and W. C. Welch. 1988. "Millimeter wavelength observations of solar flares for Max 1991." Flare Research at the Next Solar Maximum, 107-112:

    Gopalswamy, N., and M. Kundi. 1988. "Recent Results of Meter-Decameter Wave Observations of Solar Flares." IAU Colloq 104: Solar and Stellar Flares, 185:

    Gopalswamy, N., and M. Kundu. 1987. "Two dimensional imaging observations of meter-decameter bursts associated with the February 1986 flare activity." Physical Interpretation of Solar/Interplanetary and Cometary Intervals, 16:

    Kundu, M., and N. Gopalswamy. 1987. "Correlated type III burst emission from distant sources on the sun." Solar Physics, 112: 133-142 [10.1007/BF00148493]

    Kundu, M., N. Gopalswamy, J. Saba, J. Schmelz, and K. Strong. 1987. "A study of solar preflare activity using two-dimensional radio and SMM-XRP observations." Sol Phys, 114 (2): 273-288 [10.1007/BF00167346]

    Gopalswamy, N., and M. Kundu. 1987. "Imaging observations of the evolution of meter-decameter burst emission during a major flare." Solar Physics, 111: 347-363 [ 10.1007/BF00148525]

    Gopalswamy, N. 1987. "Fine structures in solar microwave flares." Solar Physics, 110: 327-335 [ 10.1007/BF00206428]

    Gopalswamy, N., M. Kundu, and A. Szabo. 1987. "Propagation of electrons emitting weak type III bursts in coronal streamers." Solar Physics, 108: 333-345 [10.1007/BF00214168]

    Gopalswamy, N., and M. Kundu. 1987. "Simultaneous radio and white light observations of the 1984 June 27 coronal mass ejection event." Solar Physics, 114: 347-362 [ 10.1007/BF00167350]

    Thejappa, G., N. Gopalswamy, C. Sastry, and M. Aubier. 1986. "Some interesting features in the drift pair phenomena of solar decametric radiation." Plasma Astrophysics, 251: 121-125.

    Gopalswamy, N., V. Krishan, and J. Tarter. 1986. "Notes and News." Bulletin of the Astronomical Society of India, 14: 56-63.

    Gopalswamy, N. 1986. "Type-I solar radio bursts." Kodaikanal Observatory Bulletins, 6: 77-85.

    Gopalswamy, N. 1986. "A theory of Jovian shadow bursts." Earth Moon and Planets, 35: 93-115 [ 10.1007/BF00117270]

    Gopalswamy, N., G. Thejappa, C. Sastry, and A. Tlamicha. 1986. "Estimation of coronal magnetic fields using Type-I emission." Bulletin of the Astronomical Institutes of Czechoslovakia, 37: 115-120.

    Gopalswamy, N., G. Thejappa, and C. Sastry. 1985. "Estimation of coronal magnetic fields using solar type I radio emission.." Bulletin of the Astronomical Society of India, 13: 81.

    Gopalswamy, N., and G. Thejappa. 1985. "Ion-sound turbulence due to shock gradients in collisionless plasmas.." Pramana, 25: 575-585 [ 10.1007/BF02847236]

    Padmanabhan, T., A. Kembhavi, S. Bhaysar, D. Bhattacharya, and N. Gopalswamy. 1984. "Notes and News." Bulletin of the Astronomical Society of India, 12: 319-328.

    Gopalswamy, N., G. Thejappa, and C. Sastry. 1984. "An interpretation of decametric absorption bursts." Solar Terrestrial Physics, 197:

    Thejappa, G., C. Sastry, and N. Gopalswamy. 1984. "Fine structure in solar decametric radiation." Nonlinear and Turbulent Processes in Physics, 547-561:

    Gopalswamy, N., G. Thejappa, and C. Sastry. 1984. "Observations on the Fine Structures in Solar Decametric Radio Emission." Kodaikanal Observatory Bulletins, 4: 47-54.

    Gopalswamy, N. 1984. "Second Indo-US workshop on solar-terrestrial physics.." Bulletin of the Astronomical Society of India, 12: 324-328.

    Gopalswamy, N., G. Thejappa, K. Subramanian, and C. Sastry. 1984. "Narrow-band, short duration radio bursts at decameter wavelengths andtheir interpretation.." Bulletin of the Astronomical Society of India, 12: 75-76.

    Gopalswamy, N., G. Thejappa, and C. Sastry. 1983. "Observations and interpretation of solar decametric absorption bursts." Journal of Astrophysics and Astronomy, 4: 215-224 [ 10.1007/BF02714909]

    Gopalswamy, N., and S. Krishan. 1982. "Surface instability of a current carrying plasma under the influence of a high frequency electric field." Pramana, 18: 473-484 [ 10.1007/BF02846556]

    Ray, R., M. Atre, N. Gopalswamy, and S. Krishan. 1982. "Surface explosive instability for high frequency waves." Plasma Physics, 24: 319-329 [ 10.1088/0032-1028/24/3/008]

    Gopalswamy, N., and S. Krishnan. 1982. "Surface waves in the presence of external high frequency fields." Plasma Physics, 24: 1277-1290 [ 10.1088/0032-1028/24/10/005]

    Gopalswamy, N., and V. Krishan. 1980. "Absorption of intense electromagnetic beams in a magnetoplasma." Astrophysics and Space Science, 73: 179-186 [ 10.1007/BF00642372]

    Non-Refereed

    StCyr, O. C., H. Xie, M. L. Mays, et al. J. M. Davila, H. R. Gilbert, S. I. Jones, W. D. Pesnell, N. Gopalswamy, J. B. Gurman, S. Yashiro, J. Wuelser, R. A. Howard, B. J. Thompson, and W. T. Thompson. 2009. "Recent STEREO Observations of Coronal Mass Ejections." AGU Fall Meeting Abstracts A1491-:

    Klimchuk, J. A., L. van Driel-Gesztelyi, C. Schrijver, et al. D. Melrose, L. Fletcher, N. Gopalswamy, R. M. Harrison, C. Mandrini, H. Peter, S. Tsuneta, B. Scaron;nak, and J. Wang. 2008. "Commission 10: solar activity." Proceedings of the International Astronomical Union 4 (T27A): 79-103 [Full Text (Link)] [10.1017/S1743921308025350]

    Webb, D., N. Gopalswamy, W.-L. Liu, et al. D. G. Sibeck, B. Schmieder, J.-J. Wang, and C. Wang. 2007. "Division II / Working Group International Collaboration in Space Weather." Proceedings of the International Astronomical Union 3 (T26B): 107-110 [10.1017/S1743921308023752]

    Kozyra, J. U., K. Shibata, R. J. Barnes, et al. S. Basu, J. M. Davila, N. J. Fox, N. Gopalswamy, M. M. Kuznetsova, D. Pallamraju, L. J. Paxton, A. Ridley, M. Weiss, C. A. Young, and L. J. Zanetti. 2006. "A Sun-to-Earth Campaign Joining Observations from the Great Observatory with Worldwide Satellite and Ground-Based Resources to Investigate System Science Frontiers." AGU Spring Meeting Abstracts A3-:

    Brief Bio

      Dr. Nat Gopalswamy is a staff scientist at the Heliophysics Division of NASA’s Goddard Space Flight Center, Greenbelt, Maryland. He holds the position of Astrophysicist in the Solar Physics Laboratory. Before joining NASA, he had held the positions of Research Professor at the Catholic University of America and Associate Research Scientist position at the University of Maryland, College Park. He was a Senior Resident Research Associate of the National Research Council at the Goddard Space Flight Center (1998-2000). He was briefly (1983-1985) the Resident Scientist of the Kodaikanal Observatory. Dr. Gopalswamy received his PhD from the Indian Institute of Science, Bangalore (1982) and did his post-doctoral training at the University of Maryland, College Park (1985). He was conferred with a Doctor Honoris Causa by the Bulgarian Academy of Sciences in 2019. Dr. Gopalswamy is an AGU Fellow.

     Over the past two decades, Dr. Gopalswamy has been engaged in solving problems in solar and solar terrestrial physics using data from various large radio telescopes and space missions. In particular, he is interested in coronal mass ejections and their impact on Earth and on the heliosphere in the form of magnetic storms and particle radiation. He has considerable expertise in the analysis of multi-wavelength data (X-ray, EUV, optical and radio). In the recent years, he has been extensively involved in the analys is of Yohkoh, SOHO, STEREO, SDO, Wind and ACE data in conjunction with radio and optical images obtained by ground based instruments. He is a member of the SOHO and STEREO teams engaged in studying coronal mass ejections using coronagraph and in-situ data from Wind and ACE. He has authored or co-authored more than 450 papers.

     Some of the notable discoveries of Dr. Gopalswamy: Radio CME (1992), Umbral oscillations in microwaves (1993), transient microwave brightenings (1995), three-part CME using non-coronagraphic observations (1996), Effective interplanetary acceleration of CMEs (2000), CME Cannibalism (2001), High-latitude CMEs and solar polarity reversal (2003), Effect of CME interaction on SEP intensity (2004), Empirical shock arrival model (2005), Geoeffectiveness of halo CMEs (2007), High-speed radio-quiet CMEs (2008), CME Deflection by coronal holes (2009), Radio-quiet interplanetary shocks (2010), Heliospheric magnetic field from white-light shock structure (2011), Relation between polar magnetic field strength and microwave brightness (2012), Latitudinal connectivity in GLE events (2013), Anomalous expansion of CMEs in Solar Cycle 24 (2014), The peculiar behavior of halo CMEs (2015), Hierarchical relationship between CME kinematics and spectral hardness of SEP events (2016), Reconstruction of CME flux ropes from eruption data (2018), Relation between durations of sustained gamma-ray emission and interplanetary type II radio bursts from the Sun (2018), Correlation between CME speed and gamma-ray fluence (2019), Spatially-extended nature of solar gamma-ray sources (2020), Heliospheric state revealed by height of halo CME formation (2020). First measurement of temperature and flow speed of electrons in the solar wind formation region using coronagraphy (2021).


    Publications

    Refereed

    Ding, Z., G. Li, R. W. Ebert, et al. M. A. Dayeh, A. S. Fe‐Dueñas, M. Desai, H. Xie, N. Gopalswamy, and A. Bruno. 2022. "Modeling the East‐West Asymmetry of Energetic Particle Fluence in Large Solar Energetic Particle Events Using the iPATH Model." Journal of Geophysical Research: Space Physics 127 (6): e2022JA030343 [10.1029/2022ja030343]

    Gopalswamy, N., P. Makela, S. Yashiro, S. Akiyama, and H. Xie. 2022. "The Relation between Type III Radio Storms and CIR Energetic Particles." 2022 3rd URSI Atlantic and Asia Pacific Radio Science Meeting (AT-AP-RASC) [10.23919/at-ap-rasc54737.2022.9814336]

    Gopalswamy, N., S. Akiyama, P. Makela, S. Yashiro, and H. Xie. 2022. "Can Type III Radio Storms be a Source of Seed Particles to Shock Acceleration?" 2022 3rd URSI Atlantic and Asia Pacific Radio Science Meeting (AT-AP-RASC) [10.23919/at-ap-rasc54737.2022.9814233]

    Michalek, G., N. Gopalswamy, and S. Yashiro. 2022. "Study of the Mass-loss Rate from the Sun." The Astrophysical Journal 930 (1): 74 [10.3847/1538-4357/ac4fcb]

    Swarnalingam, N., D. L. Wu, and N. Gopalswamy. 2022. "Interhemispheric Asymmetries in Ionospheric Electron Density Responses During Geomagnetic Storms: A Study Using Space‐Based and Ground‐Based GNSS and AMPERE Observations." Journal of Geophysical Research: Space Physics 127 (5): [10.1029/2021ja030247]

    Gopalswamy, N., P. Mäkelä, and S. Yashiro. 2022. "PARTICLE ACCELERATION AND TRANSPORT AT THE SUN INFERRED FROM FERMI/LAT OBSERVATIONS OF > 100 MEV GAMMA-RAYS." 18th Annual Meeting of the Asia Oceania Geosciences Society, World Scientific Publishing Company 189-191 [10.1142/9789811260100_0064]

    Kooi, J. E., D. B. Wexler, E. A. Jensen, et al. M. N. Kenny, T. Nieves-Chinchilla, L. B. Wilson, B. E. Wood, L. K. Jian, S. F. Fung, A. Pevtsov, N. Gopalswamy, and W. B. Manchester. 2022. "Modern Faraday Rotation Studies to Probe the Solar Wind." Frontiers in Astronomy and Space Sciences 9 id 841866 [10.3389/fspas.2022.841866]

    Vemareddy, P., P. Démoulin, K. S. Raja, et al. J. Zhang, N. Gopalswamy, and N. Vasantharaju. 2022. "Eruption of the EUV Hot Channel from the Solar Limb and Associated Moving Type IV Radio Burst." The Astrophysical Journal 927 (1): 108 [10.3847/1538-4357/ac4dfe]

    Michalek, G., N. Gopalswamy, and S. Yashiro. 2022. "Periodic Oscillations in LASCO Coronal Mass Ejection Speeds: Space Seismology." The Astrophysical Journal Letters 927 (1): L16 [10.3847/2041-8213/ac54b0]

    Gopalswamy, N., P. Mäkelä, S. Yashiro, S. Akiyama, and H. Xie. 2022. "Solar activity and space weather." Journal of Physics: Conference Series 2214 (1): 012021 [10.1088/1742-6596/2214/1/012021]

    Suresh, K., N. Gopalswamy, and A. Shanmugaraju. 2022. "Arrival Time Estimates of Earth-Directed CME-Driven Shocks." Solar Physics 297 (1): 3 [10.1007/s11207-021-01914-1]

    Daglis, I. A., L. C. Chang, S. Dasso, et al. N. Gopalswamy, O. V. Khabarova, E. Kilpua, R. Lopez, D. Marsh, K. Matthes, D. Nandy, A. Seppälä, K. Shiokawa, R. Thiéblemont, and Q. Zong. 2021. "Predictability of variable solar–terrestrial coupling." Annales Geophysicae 39 (6): 1013-1035 [10.5194/angeo-39-1013-2021]

    Xie, H., N. Gopalswamy, and S. Akiyama. 2021. "The Structural Connection between Coronal Mass Ejection Flux Ropes near the Sun and at 1 au." The Astrophysical Journal 922 (1): 64 [10.3847/1538-4357/ac23cc]

    Burud, D. S., R. Jain, A. K. Awasthi, et al. S. Chaudhari, S. C. Tripathy, N. Gopalswamy, P. Chamadia, S. C. Kaushik, and R. Vhatkar. 2021. "Spotless days and geomagnetic index as the predictors of solar cycle 25." Research in Astronomy and Astrophysics 21 (9): 215 [10.1088/1674-4527/21/9/215]

    Zhang, J., M. Temmer, N. Gopalswamy, et al. O. Malandraki, N. V. Nitta, S. Patsourakos, F. Shen, B. Vršnak, Y. Wang, D. Webb, M. I. Desai, K. Dissauer, N. Dresing, M. Dumbović, X. Feng, S. G. Heinemann, M. Laurenza, N. Lugaz, and B. Zhuang. 2021. "Earth-affecting solar transients: a review of progresses in solar cycle 24." Progress in Earth and Planetary Science 8 (1): 56 [10.1186/s40645-021-00426-7]

    Shukure, N. T., S. B. Tessema, and N. Gopalswamy. 2021. "Total Solar Irradiance Variability on the Evolutionary Timescale and its Impact on the Earth’s Mean Surface Temperature." The Astrophysical Journal 917 (2): 86 [10.3847/1538-4357/ac0894]

    Gopalswamy, N., S. Yashiro, P. Mäkelä, H. Xie, and S. Akiyama. 2021. "The Common Origin of High-energy Protons in Solar Energetic Particle Events and Sustained Gamma-Ray Emission from the Sun." The Astrophysical Journal 915 (2): 82 [10.3847/1538-4357/ac004f]

    Wilson, L. B., A. L. Brosius, N. Gopalswamy, et al. T. Nieves‐Chinchilla, A. Szabo, K. Hurley, T. Phan, J. C. Kasper, N. Lugaz, I. G. Richardson, C. H. Chen, D. Verscharen, R. T. Wicks, and J. M. TenBarge. 2021. "A Quarter Century of Wind Spacecraft Discoveries." Reviews of Geophysics 59 (2): e2020RG000714 [10.1029/2020rg000714]

    Pant, V., S. Majumdar, R. Patel, et al. A. Chauhan, D. Banerjee, and N. Gopalswamy. 2021. "Investigating Width Distribution of Slow and Fast CMEs in Solar Cycles 23 and 24." Frontiers in Astronomy and Space Sciences 8 [10.3389/fspas.2021.634358]

    Majumdar, S., S. P. Tadepalli, S. S. Maity, et al. K. Deshpande, A. Kumari, R. Patel, and N. Gopalswamy. 2021. "Imaging and Spectral Observations of a Type-II Radio Burst Revealing the Section of the CME-Driven Shock That Accelerates Electrons." Solar Physics 296 (4): 62 [10.1007/s11207-021-01810-8]

    Shukure, N. T., S. B. Tessema, and N. Gopalswamy. 2021. "On the Connection between Solar Surface Magnetic Flux and the Total Solar Irradiance." The Astrophysical Journal 907 (1): 39 [10.3847/1538-4357/abcbf3]

    Gopalswamy, N., J. Newmark, S. Yashiro, et al. P. Mäkelä, N. Reginald, N. Thakur, Q. Gong, Y.-H. Kim, K.-S. Cho, S.-H. Choi, J.-H. Baek, S.-C. Bong, H.-S. Yang, J.-Y. Park, J.-H. Kim, Y.-D. Park, J.-O. Lee, R.-S. Kim, and E.-K. Lim. 2021. "The Balloon-Borne Investigation of Temperature and Speed of Electrons in the Corona (BITSE): Mission Description and Preliminary Results." Solar Physics 296 (1): 15 [10.1007/s11207-020-01751-8]

    Umuhire, A. C., N. Gopalswamy, J. Uwamahoro, et al. S. Akiyama, S. Yashiro, and P. Mäkelä. 2021. "Properties of High-Frequency Type II Radio Bursts and Their Relation to the Associated Coronal Mass Ejections." Solar Physics 296 (1): 27 [10.1007/s11207-020-01743-8]

    Dagnew, F. K., N. Gopalswamy, S. B. Tessema, et al. S. Akiyama, S. Yashiro, and T. Y. Tesfu. 2020. "Intercycle and Intracycle Variation of Halo CME Rate Obtained from SOHO/LASCO Observations." The Astrophysical Journal 903 (2): 118 [10.3847/1538-4357/abb887]

    Rodríguez-Pacheco, J., R. F. Wimmer-Schweingruber, G. M. Mason, et al. G. C. Ho, S. Sánchez-Prieto, M. Prieto, C. Martín, H. Seifert, G. B. Andrews, S. R. Kulkarni, L. Panitzsch, S. Boden, S. I. Böttcher, I. Cernuda, R. Elftmann, F. Espinosa Lara, R. Gómez-Herrero, C. Terasa, J. Almena, S. Begley, E. Böhm, J. J. Blanco, W. Boogaerts, A. Carrasco, R. Castillo, A. da Silva Fariña, V. de Manuel González, C. Drews, A. R. Dupont, S. Eldrum, C. Gordillo, O. Gutiérrez, D. K. Haggerty, J. R. Hayes, B. Heber, M. E. Hill, M. Jüngling, S. Kerem, V. Knierim, J. Köhler, S. Kolbe, A. Kulemzin, D. Lario, W. J. Lees, S. Liang, A. Martínez Hellín, D. Meziat, A. Montalvo, K. S. Nelson, P. Parra, R. Paspirgilis, A. Ravanbakhsh, M. Richards, O. Rodríguez-Polo, A. Russu, I. Sánchez, C. E. Schlemm, B. Schuster, L. Seimetz, J. Steinhagen, J. Tammen, K. Tyagi, T. Varela, M. Yedla, J. Yu, N. Agueda, A. Aran, T. S. Horbury, B. Klecker, K.-L. Klein, E. Kontar, S. Krucker, M. Maksimovic, O. Malandraki, C. J. Owen, D. Pacheco, B. Sanahuja, R. Vainio, J. J. Connell, S. Dalla, W. Dröge, O. Gevin, N. Gopalswamy, Y. Y. Kartavykh, K. Kudela, O. Limousin, P. Makela, G. Mann, H. Önel, A. Posner, J. M. Ryan, J. Soucek, S. Hofmeister, N. Vilmer, A. P. Walsh, L. Wang, M. E. Wiedenbeck, K. Wirth, and Q. Zong. 2020. "The Energetic Particle Detector." Astronomy & Astrophysics 642 A7 [10.1051/0004-6361/201935287]

    Wilson, L. B., A. Brosius, N. Gopalswamy, et al. T. Nieves-Chinchilla, A. Szabo, K. C. Hurley, T.-D. Phan, J. C. Kasper, I. G. Richardson, N. Lugaz, C. Chen, D. Verscharen, R. T. Wicks, and J. M. TenBarge. 2020. "A Quarter Century of Wind Spacecraft Discoveries." Reviews of Geophysics (Submitted) [Full Text (Link)] [10.1002/essoar.10504309.1]

    Yashiro, S., N. Gopalswamy, S. Akiyama, and P. Mӓkelӓ. 2020. "A catalog of prominence eruptions detected automatically in the SDO/AIA 304 Å images." Journal of Atmospheric and Solar-Terrestrial Physics 205 105324 [10.1016/j.jastp.2020.105324]

    Gopalswamy, N., P. Makela, S. Yashiro, and S. Akiyama. 2020. "Diffuse Interplanetary Radio Emission from a Polar Coronal Mass Ejection." 2020 XXXIIIrd General Assembly and Scientific Symposium of the International Union of Radio Science [10.23919/ursigass49373.2020.9232000]

    Gopalswamy, N., P. Makela, and S. Yashiro. 2020. "A Weak Fermi Gamma-ray Event Associated with a Halo CME and a Type II Radio Burst." 2020 XXXIIIrd General Assembly and Scientific Symposium of the International Union of Radio Science 1-4 [10.23919/ursigass49373.2020.9232363]

    Gopalswamy, N., S. Akiyama, and S. Yashiro. 2020. "The State of the Heliosphere Revealed by Limb-halo Coronal Mass Ejections in Solar Cycles 23 and 24." The Astrophysical Journal Letters 897 (1): L1 [10.3847/2041-8213/ab9b7b]

    Singh, T., M. S. Yalim, N. V. Pogorelov, and N. Gopalswamy. 2020. "A Modified Spheromak Model Suitable for Coronal Mass Ejection Simulations." The Astrophysical Journal 894 (1): 49 [10.3847/1538-4357/ab845f]

    Gopalswamy, N. 2020. "Positron Processes in the Sun." Atoms 8 (2): 14 [10.3390/atoms8020014]

    Luhmann, J. G., N. Gopalswamy, L. K. Jian, and N. Lugaz. 2020. "ICME Evolution in the Inner Heliosphere." Solar Physics 295 (4): 61 [10.1007/s11207-020-01624-0]

    Gopalswamy, N., P. Mäkelä, and S. Yashiro. 2020. "A Catalog of Type II radio bursts observed by Wind/WAVES and their Statistical Properties." Sun and Geosphere 14 (2): 111-121 [10.31401/sungeo.2019.02.03]

    Dagnew, F., N. Gopalswamy, S. Tassema, et al. A. Umuhire, S. Yashiro, P. Mäkelä, and H. Xie. 2020. "The Shock-Driving Capability of a CME Inferred from Multiwavelength Observations." [10.31401/sungeo.2019.02.02]

    Lara, A., N. Gopalswamy, T. Niembro, R. Pérez-Enríquez, and S. Yashiro. 2020. "Space, time and velocity association of successive coronal mass ejections." Astronomy & Astrophysics 635 A112 [10.1051/0004-6361/201936016]

    Gopalswamy, N., P. Mäkelä, S. Yashiro, et al. S. Akiyama, H. Xie, and N. Thakur. 2020. "Source of Energetic Protons in the 2014 September 1 Sustained Gamma-ray Emission Event." Solar Physics 295 (2): 18 [10.1007/s11207-020-1590-8]

    Sindhuja, G., and N. Gopalswamy. 2020. "A Study of the Observational Properties of Coronal Mass Ejection Flux Ropes near the Sun." The Astrophysical Journal 889 (2): 104 [10.3847/1538-4357/ab620f]

    Sarkar, R., N. Gopalswamy, and N. Srivastava. 2020. "An Observationally Constrained Analytical Model for Predicting the Magnetic Field Vectors of Interplanetary Coronal Mass Ejections at 1 au." The Astrophysical Journal 888 (2): 121 [10.3847/1538-4357/ab5fd7]

    Gopalswamy, N., S. Yashiro-Akiyama, P. A. Makela, and S. Yashiro. 2020. "Diffuse Interplanetary Radio Emission: Shock Emission or a Type III Storm?" URSI Radio Science Letters 2 1-5 [10.46620/20-0049]

    Gopalswamy, N., P. Mäkelä, S. Yashiro, et al. A. Lara, S. Akiyama, and H. Xie. 2019. "On the Shock Source of Sustained Gamma-Ray Emission from the Sun." Journal of Physics: Conference Series 1332 (1): 012004 [10.1088/1742-6596/1332/1/012004]

    Krupar, V., J. Magdalenić, J. P. Eastwood, et al. N. Gopalswamy, O. Kruparova, A. Szabo, and F. Němec. 2019. "Statistical Survey of Coronal Mass Ejections and Interplanetary Type II Bursts." The Astrophysical Journal 882 (2): 92 [10.3847/1538-4357/ab3345]

    Kahler, S. W., A. G. Ling, and N. Gopalswamy. 2019. "Are Solar Energetic Particle Events and Type II Bursts Associated with Fast and Narrow Coronal Mass Ejections?" Solar Physics 294 (9): 134 [10.1007/s11207-019-1518-3]

    Kumari, A., R. Ramesh, C. Kathiravan, T. J. Wang, and N. Gopalswamy. 2019. "Direct Estimates of the Solar Coronal Magnetic Field Using Contemporaneous Extreme-ultraviolet, Radio, and White-light Observations." The Astrophysical Journal 881 (1): 24 [10.3847/1538-4357/ab2adf]

    Xie, H., O. C. St. Cyr, P. Mäkelä, and N. Gopalswamy. 2019. "Statistical Study on Multispacecraft Widespread Solar Energetic Particle Events During Solar Cycle 24." Journal of Geophysical Research: Space Physics 124 (8): 6384-6402 [10.1029/2019ja026832]

    Airapetian, V. S., R. Barnes, O. Cohen, et al. G. A. Collinson, W. C. Danchi, C. F. Dong, A. D. Del Genio, K. France, K. Garcia-Sage, A. Glocer, N. Gopalswamy, J. L. Grenfell, G. Gronoff, M. Güdel, K. Herbst, W. G. Henning, C. H. Jackman, M. Jin, C. P. Johnstone, L. Kaltenegger, C. D. Kay, K. Kobayashi, W. Kuang, G. Li, B. J. Lynch, T. Lüftinger, J. G. Luhmann, H. Maehara, M. G. Mlynczak, Y. Notsu, R. A. Osten, R. M. Ramirez, S. Rugheimer, M. Scheucher, J. E. Schlieder, K. Shibata, C. Sousa-Silva, V. Stamenković, R. J. Strangeway, A. V. Usmanov, P. Vergados, O. P. Verkhoglyadova, A. A. Vidotto, M. Voytek, M. J. Way, G. P. Zank, and Y. Yamashiki. 2019. "Impact of space weather on climate and habitability of terrestrial-type exoplanets." International Journal of Astrobiology 19 (2): 136-194 [10.1017/s1473550419000132]

    Michalek, G., N. Gopalswamy, and S. Yashiro. 2019. "On the Coronal Mass Ejection Detection Rate during Solar Cycles 23 and 24." The Astrophysical Journal 880 (1): 51 [10.3847/1538-4357/ab26a7]

    Aschwanden, M. J., and N. Gopalswamy. 2019. "Global Energetics of Solar Flares. VII. Aerodynamic Drag in Coronal Mass Ejections." The Astrophysical Journal 877 (2): 149 [10.3847/1538-4357/ab1b39]

    Holappa, L., N. Gopalswamy, and K. Mursula. 2019. "Explicit IMF B y ‐Effect Maximizes at Subauroral Latitudes (Dedicated to the Memory of Eigil Friis‐Christensen)." Journal of Geophysical Research: Space Physics 2018JA026285 [10.1029/2018ja026285]

    Singh, T., M. S. Yalim, N. V. Pogorelov, and N. Gopalswamy. 2019. "Simulating Solar Coronal Mass Ejections Constrained by Observations of Their Speed and Poloidal Flux." The Astrophysical Journal 875 (2): L17 [10.3847/2041-8213/ab14e9]

    Gopalswamy, N., P. Makela, S. Yashiro, et al. A. Lara, H. Xie, S. Akiyama, and R. J. MacDowall. 2019. "Fermi, Wind, and SOHO Observations of Sustained Gamma-Ray Emission from the Sun." 2019 URSI Asia-Pacific Radio Science Conference (AP-RASC) [10.23919/ursiap-rasc.2019.8738168]

    Gopalswamy, N., and P. Makela. 2019. "Properties of DH Type II Radio Bursts and Their Space Weather Implications." 2019 URSI Asia-Pacific Radio Science Conference (AP-RASC) [10.23919/ursiap-rasc.2019.8738714]

    Gopalswamy, N., P. Mäkelä, S. Yashiro, et al. A. Lara, H. Xie, S. Akiyama, and R. J. MacDowall. 2018. "Interplanetary Type II Radio Bursts from Wind /WAVES and Sustained Gamma-Ray Emission from Fermi /LAT: Evidence for Shock Source." The Astrophysical Journal 868 (2): L19 [10.3847/2041-8213/aaef36]

    Bronarska, K., M. S. Wheatland, N. Gopalswamy, and G. Michalek. 2018. "Very narrow coronal mass ejections producing solar energetic particles." Astronomy & Astrophysics 619 A34 [10.1051/0004-6361/201833237]

    Gopalswamy, N., P. Mӓkelӓ, S. Akiyama, et al. S. Yashiro, H. Xie, and N. Thakur. 2018. "Sun-to-earth propagation of the 2015 June 21 coronal mass ejection revealed by optical, EUV, and radio observations." Journal of Atmospheric and Solar-Terrestrial Physics 179 225-238 [10.1016/j.jastp.2018.07.013]

    Gopalswamy, N., S. Akiyama, S. Yashiro, and H. Xie. 2018. "Coronal flux ropes and their interplanetary counterparts." Journal of Atmospheric and Solar-Terrestrial Physics 180 35-45 [10.1016/j.jastp.2017.06.004]

    Mäkelä, P., N. Gopalswamy, and S. Akiyama. 2018. "Direction-finding Analysis of the 2012 July 6 Type II Solar Radio Burst at Low Frequencies." The Astrophysical Journal 867 (1): 40 [10.3847/1538-4357/aae2b6]

    Gopalswamy, N., and Q. Gong. 2018. "A small satellite mission for solar coronagraphy." CubeSats and NanoSats for Remote Sensing II [10.1117/12.2323807]

    Pal, S., D. Nandy, N. Srivastava, N. Gopalswamy, and S. Panda. 2018. "Dependence of Coronal Mass Ejection Properties on Their Solar Source Active Region Characteristics and Associated Flare Reconnection Flux." The Astrophysical Journal 865 (1): 4 [10.3847/1538-4357/aada10]

    Gopalswamy, N., P. Mӓkelӓ, S. Yashiro, and S. Akiyama. 2018. "Long-term solar activity studies using microwave imaging observations and prediction for cycle 25." Journal of Atmospheric and Solar-Terrestrial Physics 176 26-33 [10.1016/j.jastp.2018.04.005]

    Kay, C., and N. Gopalswamy. 2018. "The Effects of Uncertainty in Initial CME Input Parameters on Deflection, Rotation, B z , and Arrival Time Predictions." Journal of Geophysical Research: Space Physics 123 (9): 7220-7240 [10.1029/2018ja025780]

    Gopalswamy, N., S. Yashiro, P. Mäkelä, et al. H. Xie, S. Akiyama, and C. Monstein. 2018. "Extreme Kinematics of the 2017 September 10 Solar Eruption and the Spectral Characteristics of the Associated Energetic Particles." The Astrophysical Journal 863 (2): L39 [10.3847/2041-8213/aad86c]

    Gopalswamy, N. 2018. "Coronal mass ejections as a new indicator of the active Sun." Proceedings of the International Astronomical Union 13 (S340): 95-100 [10.1017/s1743921318001527]

    Pal, S., N. Gopalswamy, D. Nandy, et al. S. Akiyama, S. Yashiro, P. Makela, and H. Xie. 2017. "A Sun-to-Earth Analysis of Magnetic Helicity of the 2013 March 17–18 Interplanetary Coronal Mass Ejection." The Astrophysical Journal 851 (2): 123 [10.3847/1538-4357/aa9983]

    Kay, C., and N. Gopalswamy. 2017. "Using the Coronal Evolution to Successfully Forward Model CMEs' In Situ Magnetic Profiles." Journal of Geophysical Research: Space Physics 122 (12): 11,810-11,834 [10.1002/2017ja024541]

    Vemareddy, P., N. Gopalswamy, and B. Ravindra. 2017. "Prominence Eruption Initiated by Helical Kink Instability of an Embedded Flux Rope." The Astrophysical Journal 850 (1): 38 [10.3847/1538-4357/aa9020]

    Cho, K.-S., S.-C. Bong, S. Choi, et al. H. Yang, J. Kim, J.-H. Baek, J. Park, E.-K. Lim, R.-S. Kim, S. Kim, Y.-H. Kim, Y.-D. Park, S. Clarke, J. Davila, N. Gopalswamy, V. Nakariakov, B. Li, and R. Pinto. 2017. "Toward a Next Generation Solar Coronagraph: Development of a Compact Diagnostic Coronagraph on the ISS." Journal of Korean Astronomical Society 50 (5): 139-149 [10.5303/JKAS.2017.50.5.139]

    Gopalswamy, N., P. Mäkelä, S. Yashiro, et al. N. Thakur, S. Akiyama, and H. Xie. 2017. "A Hierarchical Relationship between the Fluence Spectra and CME Kinematics in Large Solar Energetic Particle Events: A Radio Perspective." Journal of Physics: Conference Series 900 012009 [10.1088/1742-6596/900/1/012009]

    Michalek, G., N. Gopalswamy, and S. Yashiro. 2017. "CME Velocity and Acceleration Error Estimates Using the Bootstrap Method." Solar Physics 292 (8): 114 [10.1007/s11207-017-1143-y]

    Xie, H., P. Mäkelä, O. C. St. Cyr, and N. Gopalswamy. 2017. "Comparison of the coronal mass ejection shock acceleration of three widespread SEP events during solar cycle 24." Journal of Geophysical Research: Space Physics 122 (7): 7021-7041 [10.1002/2017ja024218]

    Gopalswamy, N., S. Akiyama, S. Yashiro, and H. Xie. 2017. "A New Technique to Provide Realistic Input to CME Forecasting Models." Proceedings of the International Astronomical Union 13 (S335): 258-262 [10.1017/s1743921317011048]

    Kumari, A., R. Ramesh, C. Kathiravan, and N. Gopalswamy. 2017. "New Evidence for a Coronal Mass Ejection-driven High Frequency Type II Burst near the Sun." The Astrophysical Journal 843 (1): 10 [10.3847/1538-4357/aa72e7]

    Kay, C., N. Gopalswamy, H. Xie, and S. Yashiro. 2017. "Deflection and Rotation of CMEs from Active Region 11158." Solar Physics 292 (6): 78 [10.1007/s11207-017-1098-z]

    Gopalswamy, N., S. Yashiro, S. Akiyama, and H. Xie. 2017. "Estimation of Reconnection Flux Using Post-eruption Arcades and Its Relevance to Magnetic Clouds at 1 AU." Solar Physics 292 (4): 65 [10.1007/s11207-017-1080-9]

    Reginald, N. L., N. Gopalswamy, S. Yashiro, Q. Gong, and M. Guhathakurta. 2017. "Replacing the polarizer wheel with a polarization camera to increase the temporal resolution and reduce the overall complexity of a solar coronagraph." Journal of Astronomical Telescopes, Instruments, and Systems 3 (1): 014001 [10.1117/1.jatis.3.1.014001]

    Kay, C., N. Gopalswamy, A. Reinard, and M. Opher. 2017. "Predicting the Magnetic Field of Earth-impacting CMEs." The Astrophysical Journal 835 (2): 117 [10.3847/1538-4357/835/2/117]

    Gopalswamy, N., S. Yashiro, N. Thakur, et al. P. Mäkelä, H. Xie, and S. Akiyama. 2016. "The 2012 July 23 Backside Eruption: An Extreme Energetic Particle Event?" The Astrophysical Journal 833 (2): 216 [10.3847/1538-4357/833/2/216]

    Kishore, P., R. Ramesh, K. Hariharan, C. Kathiravan, and N. Gopalswamy. 2016. "CONSTRAINING THE SOLAR CORONAL MAGNETIC FIELD STRENGTH USING SPLIT-BAND TYPE II RADIO BURST OBSERVATIONS." The Astrophysical Journal 832 (1): 59 [10.3847/0004-637x/832/1/59]

    Michalek, G., A. Shanmugaraju, N. Gopalswamy, S. Yashiro, and S. Akiyama. 2016. "Statistical Analysis of Periodic Oscillations in LASCO Coronal Mass Ejection Speeds." Solar Physics 291 (12): 3751-3764 [10.1007/s11207-016-1000-4]

    Michalek, G., N. Gopalswamy, S. Yashiro, and K. Bronarska. 2016. "Erratum to: Dynamics of CMEs in the LASCO Field of View." Solar Physics 291 (12): 3869-3869 [10.1007/s11207-016-1005-z]

    Schmidt, J. M., I. H. Cairns, N. Gopalswamy, and S. Yashiro. 2016. "Coronal magnetic field profiles from shock‐CME standoff distances." Journal of Geophysical Research: Space Physics 121 (10): 9299-9315 [10.1002/2016ja022956]

    Selvakumaran, R., B. Veenadhari, S. Akiyama, et al. M. Pandya, N. Gopalswamy, S. Yashiro, S. Kumar, P. Mäkelä, and H. Xie. 2016. "On the reduced geoeffectiveness of solar cycle 24: A moderate storm perspective." Journal of Geophysical Research: Space Physics 121 (9): 8188-8202 [10.1002/2016ja022885]

    Mäkelä, P., N. Gopalswamy, M. J. Reiner, S. Akiyama, and V. Krupar. 2016. "SOURCE REGIONS OF THE TYPE II RADIO BURST OBSERVED DURING A CME–CME INTERACTION ON 2013 MAY 22." The Astrophysical Journal 827 (2): 141 [10.3847/0004-637x/827/2/141]

    Teklu, T., A. Gholap, N. Gopalswamy, et al. S. Yashiro, P. Makela, S. Akiyama, N. Thakur, and H. Xie. 2016. "A study of the 2012 January 19 complex type II radio burst using wind, SOHO, and STEREO observations." 2016 URSI Asia-Pacific Radio Science Conference (URSI AP-RASC) [10.1109/ursiap-rasc.2016.7601386]

    Gopalswamy, N. 2016. "Solar activity studies using microwave imaging observations." 2016 URSI Asia-Pacific Radio Science Conference (URSI AP-RASC) [10.1109/ursiap-rasc.2016.7601382]

    Gopalswamy, N. 2016. "Low-frequency radio bursts and space weather." 2016 URSI Asia-Pacific Radio Science Conference (URSI AP-RASC) [10.1109/ursiap-rasc.2016.7601368]

    Gopalswamy, N., S. Akiyama, P. Makela, S. Yashiro, and I. H. Caims. 2016. "On the directivity of low-frequency type IV radio bursts." 2016 URSI Asia-Pacific Radio Science Conference (URSI AP-RASC) [10.1109/ursiap-rasc.2016.7601385]

    Lavraud, B., Y. Liu, K. Segura, et al. J. He, G. Qin, M. Temmer, J.-C. Vial, M. Xiong, J. Davies, A. Rouillard, R. Pinto, F. Auchère, R. Harrison, C. Eyles, W. Gan, P. Lamy, L. Xia, J. Eastwood, L. Kong, J. Wang, R. Wimmer-Schweingruber, S. Zhang, Q. Zong, J. Soucek, J. An, L. Prech, A. Zhang, P. Rochus, V. Bothmer, M. Janvier, M. Maksimovic, C. Escoubet, E. Kilpua, J. Tappin, R. Vainio, S. Poedts, M. Dunlop, N. Savani, N. Gopalswamy, S. Bale, G. Li, T. Howard, C. DeForest, D. Webb, N. Lugaz, S. Fuselier, K. Dalmasse, J. Tallineau, D. Vranken, and J. Fernández. 2016. "A small mission concept to the Sun–Earth Lagrangian L5 point for innovative solar, heliospheric and space weather science." Journal of Atmospheric and Solar-Terrestrial Physics 146 171-185 [10.1016/j.jastp.2016.06.004]

    Xie, H., P. Mäkelä, N. Gopalswamy, and O. C. St. Cyr. 2016. "Energy dependence of SEP electron and proton onset times." Journal of Geophysical Research: Space Physics 121 (7): 6168-6183 [10.1002/2015ja021422]

    Gopalswamy, N., S. Yashiro, and S. Akiyama. 2016. "UNUSUAL POLAR CONDITIONS IN SOLAR CYCLE 24 AND THEIR IMPLICATIONS FOR CYCLE 25." The Astrophysical Journal 823 (1): L15 [10.3847/2041-8205/823/1/l15]

    Mäkelä, P., N. Gopalswamy, and S. Yashiro. 2016. "The radial speed‐expansion speed relation for Earth‐directed CMEs." Space Weather 14 (5): 368-378 [10.1002/2015sw001335]

    Sterling, A. C., R. L. Moore, D. A. Falconer, et al. N. K. Panesar, S. Akiyama, S. Yashiro, and N. Gopalswamy. 2016. "MINIFILAMENT ERUPTIONS THAT DRIVE CORONAL JETS IN A SOLAR ACTIVE REGION." The Astrophysical Journal 821 (2): 100 [10.3847/0004-637x/821/2/100]

    Gopalswamy, N. 2016. "History and development of coronal mass ejections as a key player in solar terrestrial relationship." Geoscience Letters 3 (1): 8 [10.1186/s40562-016-0039-2]

    Schmidt, J. M., I. H. Cairns, H. Xie, O. C. St. Cyr, and N. Gopalswamy. 2016. "CME flux rope and shock identifications and locations: Comparison of white light data, Graduated Cylindrical Shell model, and MHD simulations." Journal of Geophysical Research: Space Physics 121 (3): 1886-1906 [10.1002/2015ja021805]

    Yamamoto, M., K. Shiokawa, T. Nakamura, and N. Gopalswamy. 2016. "Special issue “International CAWSES-II Symposium”." Earth Planet Sp 68 (1): 26 [10.1186/s40623-016-0392-6]

    Thakur, N., N. Gopalswamy, P. Mäkelä, et al. S. Akiyama, S. Yashiro, and H. Xie. 2016. "Two Exceptions in the Large SEP Events of Solar Cycles 23 and 24." Solar Physics 291 (2): 513-530 [10.1007/s11207-015-0830-9]

    Gopalswamy, N., P. Makela, S. Akiyama, S. Yashiro, and N. Thakur. 2015. "CMEs during the Two Activity Peaks in Cycle 24 and their Space Weather Consequences." Sun and Geosphere 10 111-118

    Gopalswamy, N., S. Yashiro, H. Xie, S. Akiyama, and P. Mäkelä. 2015. "Properties and geoeffectiveness of magnetic clouds during solar cycles 23 and 24." Journal of Geophysical Research: Space Physics 120 (11): 9221-9245 [10.1002/2015ja021446]

    Tsuda, T., M. Shepherd, and N. Gopalswamy. 2015. "Advancing the understanding of the Sun–Earth interaction—the Climate and Weather of the Sun–Earth System (CAWSES) II program." Progress in Earth and Planetary Science 2 (1): 28 [10.1186/s40645-015-0059-0]

    Gopalswamy, N., P. Mäkelä, S. Yashiro, et al. H. Xie, S. Akiyama, and N. Thakur. 2015. "High-energy solar particle events in cycle 24." Journal of Physics: Conference Series 642 012012 [10.1088/1742-6596/642/1/012012]

    Cremades, H., F. A. Iglesias, O. C. St. Cyr, et al. H. Xie, M. L. Kaiser, and N. Gopalswamy. 2015. "Low-Frequency Type-II Radio Detections and Coronagraph Data Employed to Describe and Forecast the Propagation of 71 CMEs/Shocks." Solar Physics 290 (9): 2455-2478 [10.1007/s11207-015-0776-y]

    Gopalswamy, N., S. Yashiro, and S. Akiyama. 2015. "KINEMATIC AND ENERGETIC PROPERTIES OF THE 2012 MARCH 12 POLAR CORONAL MASS EJECTION." The Astrophysical Journal 809 (1): 106 [10.1088/0004-637x/809/1/106]

    Mann, I., P. K. Manoharan, N. Gopalswamy, et al. C. Briand, I. V. Chashei, S. E. Gibson, D. Lario, Y. Hanaoka, O. Malandraki, E. Kontar, and J. D. Richardson. 2015. "DIVISION E COMMISSION 49: INTERPLANETARY PLASMA AND HELIOSPHERE." Proceedings of the International Astronomical Union 11 (T29A): 300-315 [10.1017/s1743921316000818]

    Kahler, S., N. Gopalswamy, P. Makela, et al. S. Akiyama, S. Yashiro, H. Xie, and N. Thakur. 2015. "Filament Eruptions Outside of Active Regions as Sources of Large Solar Energetic Particle Events." 34th International Cosmic Ray Conference (ICRC2015) 34 48

    Gopalswamy, N., B. Tsurutani, and Y. Yan. 2015. "Short-term variability of the Sun-Earth system: an overview of progress made during the CAWSES-II period." Progress in Earth and Planetary Science 2 (1): 13 [10.1186/s40645-015-0043-8]

    Gopalswamy, N., P. Mäkelä, S. Akiyama, et al. S. Yashiro, H. Xie, N. Thakur, and S. W. Kahler. 2015. "LARGE SOLAR ENERGETIC PARTICLE EVENTS ASSOCIATED WITH FILAMENT ERUPTIONS OUTSIDE ACTIVE REGIONS." The Astrophysical Journal 806 (1): 8 [10.1088/0004-637x/806/1/8]

    Gopalswamy, N., H. Xie, S. Akiyama, et al. P. Mäkelä, S. Yashiro, and G. Michalek. 2015. "THE PECULIAR BEHAVIOR OF HALO CORONAL MASS EJECTIONS IN SOLAR CYCLE 24." The Astrophysical Journal 804 (1): L23 [10.1088/2041-8205/804/1/l23]

    Michalek, G., N. Gopalswamy, S. Yashiro, and K. Bronarska. 2015. "Dynamics of CMEs in the LASCO Field of View." Solar Physics 290 (3): 903-917 [10.1007/s11207-015-0653-8]

    Makela, P., N. Gopalswamy, S. Akiyama, H. Xie, and S. Yashiro. 2015. "Estimating the Height of CMEs Associated with a Major SEP Event at the Onset of the Metric Type II Radio Burst during Solar Cycles 23 and 24." The Astrophysical Journal 806 (1): 13.

    Gopalswamy, N. 2014. "The Dynamics of Eruptive Prominences." Astrophysics and Space Science Library 381-410 [10.1007/978-3-319-10416-4_15]

    Gopalswamy, N., and M. . 2014. "Latitudinal Connectivity of Ground Level Enhancement Events." Outstanding Problems in Heliophysics: From Coronal Heating to the Edge of the Heliosphere 484 63

    Hariharan, K., R. Ramesh, P. Kishore, C. Kathiravan, and N. Gopalswamy. 2014. "An Estimate of the Coronal Magnetic Field near a Solar Coronal Mass Ejection from Low-frequency Radio Observations." The Astrophysical Journal 795 [14-10.1088/0004-637X/795/1/14]

    Thakur, N., N. Gopalswamy, H. Xie, et al. P. Makela;, S. Yashiro, S. Akiyama, and J. M. Davila. 2014. "Ground Level Enhancement in the 2014 January 6 Solar Energetic Particle Event." The Astrophysical Journal 790 [LL13-10.1088/2041-8205/790/1/L13]

    Gopalswamy, N., H. Xie, S. Akiyama, P. A. Makela;, and S. Yashiro. 2014. "Major solar eruptions and high-energy particle events during solar cycle 24." Earth, Planets, and Space 66 104 [Full Text (Link)] [10.1186/1880-5981-66-104]

    Yashiro, S., N. Gopalswamy, P. Makela;, et al. S. Akiyama, W. Uddin, A. K. Srivastava, N. C. Joshi, R. Chandra, P. K. Manoharan, K. Mahalakshmi, V. C. Dwivedi, R. Jain, A. K. Awasthi, N. V. Nitta, M. J. Aschwanden, and D. P. Choudhary. 2014. "Homologous flare-CME events and their metric type II radio burst association." Advances in Space Research 54 1941-1948 [10.1016/j.asr.2014.07.002]

    Belov, A., A. Abunin, M. Abunina, et al. E. Eroshenko, V. Oleneva, V. Yanke, A. Papaioannou, H. Mavromichalaki, N. Gopalswamy, and S. Yashiro. 2014. "Coronal Mass Ejections and Non-recurrent Forbush Decreases." Solar Physics 289 3949-3960 [10.1007/s11207-014-0534-6]

    Kim, R.-S., Y.-J. Moon, N. Gopalswamy, Y.-D. Park, and Y.-H. Kim. 2014. "Two-step forecast of geomagnetic storm using coronal mass ejection and solar wind condition." Space Weather 12 246-256 [10.1002/2014SW001033]

    Gopalswamy, N., S. Akiyama, S. Yashiro, et al. H. Xie, P. Makela;, and G. Michalek. 2014. "Anomalous expansion of coronal mass ejections during solar cycle 24 and its space weather implications." Geophysical Research Letters 41 2673-2680 [10.1002/2014GL059858]

    Nitta, N. V., W. Liu, N. Gopalswamy, and S. Yashiro. 2014. "The Relation Between Large-Scale Coronal Propagating Fronts and Type II Radio Bursts." Solar Physics 289 4589-4606 [10.1007/s11207-014-0602-y]

    Kahler, S. W., C. N. Arge, S. Akiyama, and N. Gopalswamy. 2014. "Do Solar Coronal Holes Affect the Properties of Solar Energetic Particle Events?" Solar Physics 289 657-673 [10.1007/s11207-013-0427-0]

    Awasthi, A. K., R. Jain, P. D. Gadhiya, et al. M. J. Aschwanden, W. Uddin, A. K. Srivastava, R. Chandra, N. Gopalswamy, N. V. Nitta, S. Yashiro, P. K. Manoharan, D. P. Choudhary, N. C. Joshi, V. C. Dwivedi, and K. Mahalakshmi. 2014. "Multiwavelength diagnostics of the precursor and main phases of an M1.8 flare on 2011 April 22." Monthly Notices of the Royal Astronomical Society 437 2249-2262 [10.1093/mnras/stt2032]

    Gopalswamy, N., I. Mann, J.-L. Bougeret, et al. C. Briand, R. Lallement, D. Lario, P. K. Manoharan, K. Shibata, and D. F. Webb. 2013. "DIVISION II: COMMISSION 49: INTERPLANETARY PLASMA AND THE HELIOSPHERE." Proceedings of the International Astronomical Union 10 (T28B): 112-114 [10.1017/s1743921315005542]

    Guhathakurta, M., J. M. Davila, and N. Gopalswamy. 2013. "The International Space Weather Initiative (ISWI)." SPACE WEATHER-THE INTERNATIONAL JOURNAL OF RESEARCH AND APPLICATIONS 11 327-329 [10.1002/swe.20048]

    Xie, H., O. C. St Cyr, N. Gopalswamy, D. Odstrcil, and H. Cremades. 2013. "Understanding shock dynamics in the inner heliosphere with modeling and type II radio data: A statistical study." JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 118 4711-4723 [10.1002/jgra.50444]

    Guhathakurta, M., J. M. Davila, and N. Gopalswamy. 2013. "The International Space Weather Initiative(ISWI)." Space Weather 11 327-329 [10.1002/swe.20048]

    Choudhary, D. P., S. Gosain, N. Gopalswamy, et al. P. K. Manoharan, R. Chandra, W. Uddin, A. K. Srivastava, S. Yashiro, N. C. Joshi, P. Kayshap, V. C. Dwivedi, K. Mahalakshmi, E. Elamathi, M. Norris, A. K. Awasthi, and R. Jain. 2013. "Flux emergence, flux imbalance, magnetic free energy and solar flares." Advances in Space Research 52 1561-1566 [10.1016/j.asr.2013.07.009]

    Akiyama, S., N. Gopalswamy, S. Yashiro, and P. Makela. 2013. "A Study of Coronal Holes Observed by SoHO/EIT and the Nobeyama Radioheliograph." Publications of the Astronomical Society of Japan 65 15

    Chandra, R., N. Gopalswamy, P. Makela, et al. H. Xie, S. Yashiro, S. Akiyama, W. Uddin, A. K. Srivastava, N. C. Joshi, R. Jain, A. K. Awasthi, P. K. Manoharan, K. Mahalakshmi, V. C. Dwivedi, D. P. Choudhary, and N. V. Nitta. 2013. "Solar energetic particle events during the rise phases of solar cycles 23 and 24." Advances in Space Research 52 2102-2111 [10.1016/j.asr.2013.09.006]

    Joshi, N. C., W. Uddin, A. K. Srivastava, et al. R. Chandra, N. Gopalswamy, P. K. Manoharan, M. J. Aschwanden, D. P. Choudhary, R. Jain, N. V. Nitta, H. Xie, S. Yashiro, S. Akiyama, P. Makela, P. Kayshap, A. K. Awasthi, V. C. Dwivedi, and K. Mahalakshmi. 2013. "A multiwavelength study of eruptive events on January 23, 2012 associated with a major solar energetic particle event." Advances in Space Research 52 1-14 [10.1016/j.asr.2013.03.009]

    Gopalswamy, N., and S. Yashiro. 2013. "Obscuration of Flare Emission by an Eruptive prominence." Publications of the Astronomical Society of Japan 65 11

    Gopalswamy, N., P. Makela, H. Xie, and S. Yashiro. 2013. "Testing the empirical shock arrival model using quadrature observations." Space Weather 11 661-669 [10.1002/2013SW000945]

    Gopalswamy, N., and S. Yashiro. 2013. "Obscuration of Flare Emission by an Eruptive rominence." Publications of the Astronomical Society of Japan 65 11

    Xie, H., N. Gopalswamy, and O. C. StCyr. 2013. "Effect of CME interactions on SEP intensity: modeling the 2012 March-07 SEP event with ENLIL." AAS/Solar Physics Division Meeting 44 #.1.25-

    Xie, H. N., N. Gopalswamy, and O. C. St cyr. 2013. "Near-Sun Flux-Rope Structure of CMEs." Solar Physics 284 (1): 47-58 [10.1007/s11207-012-0209-0]

    Xie, H. N., O. C. St Cyr, N. Gopalswamy, D. Odstrcil, and H. Cremades. 2013. "Understanding shock dynamics in the inner heliosphere with modeling and type II radio data: A statistical study." J. Geophys. Res. Space Physics 118 (8): 4711-4723 [10.1002/jgra.50444]

    Gopalswamy, N., T. Nieves-Chinchilla, M. Hidalgo, et al. J. Zhang, P. Riley, L. van Driel-Gesztelyi, and C. H. Mandrini. 2013. "Preface." Solar Physics 284 (1): 1-4 [10.1007/s11207-013-0280-1]

    Cho, K.-S., S.-H. Park, K. Marubashi, et al. N. Gopalswamy, S. Akiyama, S. Yashiro, R. Kim, and E. Lim. 2013. "Comparison of Helicity Signs in Interplanetary CMEs and Their Solar Source Regions." Solar Physics 284 (1): 105-127 [10.1007/s11207-013-0224-9]

    Mäkelä, P., N. Gopalswamy, H. N. Xie, et al. A. Mohamed, S. Akiyama, and S. Yashiro. 2013. "Coronal Hole Influence on the Observed Structure of Interplanetary CMEs." Solar Physics 8 [10.1007/s11207-012-0211-6]

    Gopalswamy, N., S. Yashiro, P. Måkelå, et al. G. J. Michalek, K. Shibasaki, and D. Hathaway. 2013. "Erratum: "Behavior of Solar Cycles 23 and 24 Revealed by Microwave Observations"." The Astrophysical Journal Letters 763 (1): L24 [10.1088/2041-8205/763/1/L24]

    Gopalswamy, N., P. Måkelå, S. Akiyama, et al. H. Xie, S. Yashiro, and A. Reinard. 2013. "The Solar Connection of Enhanced Heavy Ion Charge States in the Interplanetary Medium: Implications for the Flux-Rope Structure of CMEs." Solar Physics 284 (1): 17-46 [10.1007/s11207-012-0215-2]

    Drake, J., O. Cohen, S. Yashiro, and N. Gopalswamy. 2013. "Implications of Mass and Energy Loss due to Coronal Mass Ejections on Magnetically Active Stars." The Astrophysical Journal 764 170 [10.1088/0004-637X/764/2/170]

    Cho, K., N. Gopalswamy, R. Kwon, R. Kim, and S. Yashiro. 2013. "A High-frequency Type II Solar Radio Burst Associated with the 2011 February 13 Coronal Mass Ejection." The Astrophysical Journal 765 148 [ 10.1088/0004-637X/765/2/148]

    Yashiro, S., N. Gopalswamy, P. MÄkelÄ, and S. Akiyama. 2013. "Post-Eruption Arcades and Interplanetary Coronal Mass Ejections." Solar Physics 33 [10.1007/s11207-013-0248-1]

    Kim, R., N. Gopalswamy, K. Cho, Y. Moon, and S. Yashiro. 2013. "Propagation Characteristics of CMEs Associated with Magnetic Clouds and Ejecta." Solar Physics 26 [10.1007/s11207-013-0230-y]

    Gopalswamy, N., H. Xie, S. Akiyama, et al. S. Yashiro, I. Usoskin, and J. Davila. 2013. "The First Ground Level Enhancement Event of Solar Cycle 24: Direct Observation of Shock Formation and Particle Release Heights." The Astrophysical Journal Letters 765 (2): L30 [10.1088/2041-8205/765/2/L30]

    Uddin, W., R. Jain, P. K. Manoharan, et al. D. Prasad Choudhary, V. Charan Dwivedi, M. Aschwanden, N. Nitta, N. Gopalswamy, A. Awasthi, R. Chandra, A. Srivastava, P. Kayshap, N. C. Joshi, M. Norris, P. A. Makela, and K. Mahalaksh. 2012. "A Study of the 12 June 2010 C61/SF flare associated with a CME; surge and energetic particles." 39th COSPAR Scientific Assembly 39 2026

    Pillet, V., J. A. Klimchuk, D. Melrose, et al. G. Cauzzi, L. van Driel-Gesztelyi, N. Gopalswamy, A. Kosovichev, I. Mann, and C. Schrijver. 2012. "Division II: Sun and Heliosphere." Transactions of the International Astronomical Union Series A ( 28): 61-68 [ 10.1017/S1743921312002669]

    Awasthi, A., R. Jain, D. Prasad Choudhary, et al. V. Charan Dwivedi, M. Aschwanden, N. Nitta, N. Gopalswamy, R. Chandra, A. Srivastava, P. Kayshap, N. C. Joshi, P. K. Manoharan, M. Norris, K. Mahalakshmi, E. Elamathi, and W. Uddin. 2012. "Multi-wavelength diagnostics of thermal and non-thermal sources in the 22 April 2011 flare event." 39th COSPAR Scientific Assembly 39 75

    Gopalswamy, N. 2012. "Factors affecting the intensity of solar energetic particle events." American Institute of Physics Conference Series 1436 247-252 [ 10.1063/1.4723615]

    Gopalswamy, N., I. Mann, J. Bougeret, et al. C. Briand, R. Lallement, D. Lario, P. K. Manoharan, K. Shibata, and D. Webb. 2012. "Commission 49: Interplanetary Plasma and Heliosphere." Transactions of the International Astronomical Union Series A ( 28): 95-124 [ 10.1017/S1743921312002694]

    Chandra, R., R. Jain, D. Prasad Choudhary, et al. V. Charan Dwivedi, M. Aschwanden, N. Nitta, N. Gopalswamy, A. Awasthi, A. Srivastava, P. Kayshap, N. C. Joshi, P. K. Manoharan, P. A. Makela, K. Mahalakshmi, E. Elamathi, and W. Uddi. 2012. "Solar Energetic Particle Events and Associated CMEs during the Rising Phases of Solar Cycle 23 and 24 - A Comparative study." 39th COSPAR Scientific Assembly 39 303

    Prasad-Choudhary, D., R. Jain, V. Charan Dwivedi, et al. M. Aschwanden, N. Nitta, N. Gopalswamy, A. Awasthi, R. Chandra, A. Srivastava, P. K. Manoharan, M. Norris, K. Mahalakshmi, E. Elamathi, W. Uddin, and S. Yashiro. 2012. "Magnetic Flux Imbalance in Active Regions NOAA 11283 and NOAA 11302." 39th COSPAR Scientific Assembly 39 334

    Gopalswamy, N., J. M. Davila, F. Luebken, M. Shepherd, and T. Tsuda. 2012. "Global Cooperation in the Capacity Building Activities on Sun-Earth Connection Studies." 39th COSPAR Scientific Assembly 39 650

    Gopalswamy, N. 2012. "The 3-D structure of CMEs as Inferred from Coronagraph Observations." 39th COSPAR Scientific Assembly 39 649

    Gopalswamy, N., J. M. Davila, M. L. Kaiser, et al. R. J. Macdowall, O. C. St Cyr, H. N. Xie, P. A. Makela, S. Yashiro, and W. Poomvises. 2012. "A Global View of the Energetic Solar Eruptions during 2012 January 19-27." 39th COSPAR Scientific Assembly 39 652

    Gopalswamy, N., S. Yashiro, S. Akiyama, and K. Shibasaki. 2012. "Inferences on the Behavior of Solar Cycle 24 from the Polar Coronal Hole Enhancement and the Rate of Prominence Eruptions Observed by the Nobeyama Radioheliograph." 39th COSPAR Scientific Assembly 39 651

    Gopalswamy, N., R. Jain, D. Prasad Choudhary, et al. V. Charan Dwivedi, M. Aschwanden, N. Nitta, A. Awasthi, A. Srivastava, N. C. Joshi, P. K. Manoharan, P. A. Makela, K. Mahalakshmi, E. Elamathi, W. Uddin, S. Yashiro, and S. Akiyam. 2012. "Height of Shock Formation in the Solar Corona Inferred from Observations of Type II Radio Bursts and Coronal Mass Ejections." 39th COSPAR Scientific Assembly 39 653

    Srivastava, A., R. Jain, D. Prasad Choudhary, et al. V. Charan Dwivedi, M. Aschwanden, N. Nitta, N. Gopalswamy, A. Awasthi, R. Chandra, P. Kayshap, N. C. Joshi, P. K. Manoharan, M. Norris, P. A. Makela, K. Mahalakshmi, and E. Elamathi. 2012. "On the Oscillatory and Non-oscillatory Loop Systems and Dynamical Processes during the X21 Solar Flare on 06 September 2011." 39th COSPAR Scientific Assembly 39 1882

    Yashiro, S., R. Jain, D. Prasad Choudhary, et al. V. Charan Dwivedi, M. Aschwanden, N. Nitta, N. Gopalswamy, A. Awasthi, R. Chandra, A. Srivastava, P. Kayshap, N. C. Joshi, P. K. Manoharan, P. A. Makela, K. Mahalakshmi, and E. Elam. 2012. "Coronal Mass Ejections and Type II Radio Bursts from Active Region 11158." 39th COSPAR Scientific Assembly 39 2205

    Gopalswamy, N. 2012. "Energetic particle and other space weather events of solar cycle 24." American Institute of Physics Conference Series 1500 14-19 [ 10.1063/1.4768738]

    Mohamed, A., N. Gopalswamy, S. Yashiro, et al. S. Akiyama, P. MÄkelÄ, and H. N. Xie. 2012. "The relation between coronal holes and coronal mass ejections during the rise, maximum, and declining phases of Solar Cycle 23." J. Geophys. Res. 117 (A1): A01103 [10.1029/2011JA016589]

    Gopalswamy, N., N. Nitta, S. Akiyama, P. Måkelå, and S. Yashiro. 2012. "Coronal Magnetic Field Measurement from EUV Images Made by the Solar Dynamics Observatory." The Astrophysical Journal 744 72 [ 10.1088/0004-637X/744/1/72]

    Xie, H. N., D. Odstrcil, L. Mays, et al. O. C. St Cyr, N. Gopalswamy, and H. Cremades. 2012. "Understanding shock dynamics in the inner heliosphere with modeling and Type II radio data: The 2010-04-03 event." Journal of Geophysical Research (Space Physics) 117 4105 [ 10.1029/2011JA017304]

    Ji, E., Y. Moon, N. Gopalswamy, and D. Lee. 2012. "Comparison of Dst forecast models for intense geomagnetic storms." Journal of Geophysical Research (Space Physics) 117 3209 [ 10.1029/2011JA016872]

    Kim, R., N. Gopalswamy, Y. Moon, K. Cho, and S. Yashiro. 2012. "Magnetic Field Strength in the Upper Solar Corona Using White-light Shock Structures Surrounding Coronal Mass Ejections." The Astrophysical Journal 746 118 [ 10.1088/0004-637X/746/2/118]

    Gopalswamy, N., W. Thompson, J. Davila, et al. M. Kaiser, S. Yashiro, P. Måkelå, G. Michalek, J. Bougeret, and R. Howard. 2012. "Erratum: Relation Between Type II Bursts and CMEs Inferred from STEREO Observations." Solar Physics 277 459 [ 10.1007/s11207-011-9918-z]

    Veenadhari, B., R. Selvakumaran, R. Singh, et al. A. Maurya, N. Gopalswamy, S. Kumar, and T. Kikuchi. 2012. "Coronal mass ejection–driven shocks and the associated sudden commencements/sudden impulses." J. Geophys. Res. 117 (A4): A04210 [10.1029/2011JA017216]

    Gopalswamy, N., S. Yashiro, P. Måkelå, et al. G. Michalek, K. Shibasaki, and D. Hathaway. 2012. "Behavior of Solar Cycles 23 and 24 Revealed by Microwave Observations." The Astrophysical Journal 750 L42 [ 10.1088/2041-8205/750/2/L42]

    Kahler, S., S. Akiyama, and N. Gopalswamy. 2012. "Deflections of Fast Coronal Mass Ejections and the Properties of Associated Solar Energetic Particle Events." The Astrophysical Journal 754 100 [ 10.1088/0004-637X/754/2/100]

    Ramesh, R., N. Gopalswamy, A. Lakshmi, and C. Kathiravan. 2012. "The Location of Solar Metric Type II Radio Bursts with Respect to the Associated Coronal Mass Ejections." The Astrophysical Journal 39 1549

    Gopalswamy, N., P. Måkelå, S. Akiyama, et al. S. Yashiro, H. Xie, R. MacDowall, and M. Kaiser. 2012. "Radio-loud CMEs from the disk center lacking shocks at 1 AU." Journal of Geophysical Research (Space Physics) 117 8106 [ 10.1029/2012JA017610]

    Gopalswamy, N., P. MÄkelÄ, S. Yashiro, and J. Davila. 2012. "The Relationship Between the Expansion Speed and Radial Speed of CMEs Confirmed Using Quadrature Observations of the 2011 February 15 CME." Sun and Geosphere 7 7

    Park, J., Y. Moon, and N. Gopalswamy. 2012. "Dependence of solar proton events on their associated activities: Coronal mass ejection parameters." J. Geophys. Res. 117 (A8): A08108 [10.1029/2011JA017477]

    Poomvises, W., N. Gopalswamy, S. Yashiro, R. Kwon, and O. Olmedo. 2012. "Determination of the Heliospheric Radial Magnetic Field from the Standoff Distance of a CME-driven Shock Observed by the STEREO Spacecraft." The Astrophysical Journal 758 118 [ 10.1088/0004-637X/758/2/118]

    Gopalswamy, N., H. N. Xie, S. Yashiro, et al. S. Akiyama, P. Auml;kelä, and I. Usoskin. 2012. "Properties of Ground Level Enhancement Events and the Associated Solar Eruptions During Solar Cycle 23." Space Science Reviews 171 23 [Full Text (Link)] [10.1007/s11214-012-9890-4 ]

    Gopalswamy, N., and N. Nitta. 2012. "Preface." Space Science Reviews 171 1 [10.1007/s11214-012-9934-9]

    StCyr, O. C., M. Orlove, H. Xie, et al. H. R. Gilbert, D. Odstrcil, N. Gopalswamy, M. L. Mays, C. A. Quirk, and C. Henning. 2011. "CME Parameter Input to ENLIL: LASCO halo cone versus STEREO measurements." AGU Fall Meeting Abstracts 2046-

    Quirk, C. A., O. C. St Cyr, C. Henning, et al. H. Xie, H. R. Gilbert, M. Orlove, N. Gopalswamy, and D. Odstrcil. 2011. "Type II Radio Bursts as an Indicator of CME Location." AGU Fall Meeting Abstracts 2047-

    St Cyr, O. C., M. Orlove, H. Xie, et al. H. R. Gilbert, D. Odstrcil, N. Gopalswamy, M. L. Mays, C. A. Quirk, and C. Henning. 2011. "CME Parameter Input to ENLIL: LASCO halo cone versus STEREO measurements." AGU Fall Meeting Abstracts 2046-

    Xie, H., D. Odstrcil, M. L. Mays, et al. O. C. St Cyr, N. Gopalswamy, and H. Cremades. 2011. "Understanding Shock Dynamics in the Inner Heliosphere with Modeling and Type II Radio Data: the 2010-04-03 event." AGU Fall Meeting Abstracts 2050-

    Davila, J. M., N. Gopalswamy, B. J. Thompson, T. Bogdan, and M. A. Hapgood. 2011. "The International Space Weather Initiative (ISWI)." The Sun, the Solar Wind, and the Heliosphere 375-379

    Gopalswamy, N. 2011. "Universal Heliophysical Processes." The Sun, the Solar Wind, and the Heliosphere 9-20

    Gopalswamy, N. 2011. "Heliocentric Distance of Coronal Mass Ejections at the Time of Energetic Particle Release: Revisiting the Ground Level experiments and instrumentation." International Cosmic Ray Conference 10 157

    Gopalswamy, N. 2011. "Coronal mass ejections and their heliospheric consequences." Astronomical Society of India Conference Series 2 241-258

    Gopalswamy, N., and P. MÄkelÄ. 2011. "Low-frequency type III radio bursts and solar energetic particle events." Central European Astrophysical Bulletin 35 71-82

    Macdowall, R. J., T. Lazio, S. Bale, et al. J. Burns, N. Gopalswamy, D. L. Jones, M. L. Kaiser, J. Kasper, and K. Weiler. 2011. "Observing Solar Radio Bursts from the Lunar Surface." Planetary 541-550

    Gopalswamy, N. 2011. "Coronal Mass Ejections and Solar Radio Emissions." Planetary 325-342

    Gopalswamy, N. 2011. "Mukul Ranjan Kundu." Physics Today 64 040000 [Full Text (Link)] [ 10.1063/1.3580501]

    Gopalswamy, N., and S. Yashiro. 2011. "The Strength and Radial Profile of the Coronal Magnetic Field from the Standoff Distance of a Coronal Mass Ejection-driven Shock." The Astrophysical Journal 736 L17 [10.1088/2041-8205/736/1/L17]

    Thejappa, G., R. MacDowall, and N. Gopalswamy. 2011. "Effects of Refraction on Angles and Times of Arrival of Solar Radio Bursts." The Astrophysical Journal 734 16 [10.1088/0004-637X/734/1/16]

    Mäkelä, P., N. Gopalswamy, S. Akiyama, H. Xie, and S. Yashiro. 2011. "Energetic storm particle events in coronal mass ejection-driven shocks." Journal of Geophysical Research (Space Physics) 116 8101 [ 10.1029/2011JA016683]

    Sawant, H., N. Gopalswamy, R. Rosa, et al. R. Sych, S. Anfinogentov, F. Fernandes, J. Cecatto, and J. Costa. 2011. "The Brazilian decimetric array and space weather." Journal of Atmospheric and Solar-Terrestrial Physics 73 1300-1310 [ 10.1016/j.jastp.2010.09.009]

    Gadimova, S., H. Haubold, D. Danov, et al. K. Georgieva, G. Maeda, K. Yumoto, J. Davila, and N. Gopalswamy. 2011. "United Nations Basic Space Science Initiative: 2010 Status Report on the International Space Weather Initiative." Sun and Geosphere 6 7

    Temmer, M., A. Veronig, N. Gopalswamy, and S. Yashiro. 2011. "Relation Between the 3D-Geometry of the Coronal Wave and Associated CME During the 26 April 2008 Event." Solar Physics 273 421 [ 10.1007/s11207-011-9746-1]

    Lazio, T., R. MacDowall, J. Burns, et al. D. Jones, K. Weiler, L. Demaio, A. Cohen, N. Paravastu Dalal, E. Polisensky, K. Stewart, S. Bale, N. Gopalswamy, M. Kaiser, and J. Kasper. 2011. "The Radio Observatory on the Lunar Surface for Solar studies." Advances in Space Research 48 (12): 1942-1957 [10.1016/j.asr.2011.07.006]

    Kilcik, A., V. Yurchyshyn, V. Abramenko, et al. P. Goode, N. Gopalswamy, A. Ozguc, and J. Rozelot. 2011. "Maximum Coronal Mass Ejection Speed as an Indicator of Solar and Geomagnetic Activities." The Astrophysical Journal 727 44 [Full Text (Link)] [10.1088/0004-637X/727/1/44]

    Gopalswamy, N., O. Davila, O. Davila, et al. O. Davila, E. C. Sittler, F. Egrave;re, T. L. Duvall, J. Hoeksema, M. Maksimovic, R. J. Macdowall, A. Szabo, and M. Collier. 2011. "Earth-Affecting Solar Causes Observatory (EASCO): A potential International Living with a Star Mission from Sun-Earth L5." Journal of Atmospheric and Solar-Terrestrial Physics 73 658-663 [Full Text (Link)] [ 10.1016/j.jastp.2011.01.013]

    Davila, J. M., N. Gopalswamy, and H. Haubold. 2010. "Opportunities for Ionospheric Science as Part of the International Space Weather Initiative (ISWI) (Invited)." AGU Fall Meeting Abstracts 1-

    ONeill, J. F., O. C. St Cyr, L. Mays, et al. N. Gopalswamy, J. C. Raymond, A. Ciaravella, S. Yashiro, H. Xie, S. Giordano, and C. Quirk. 2010. "Statistical Study of Solar Activity Associated with SOHO UVCS Coronal Mass Ejections." AGU Fall Meeting Abstracts 1838-

    Xie, H., L. Mays, O. C. St Cyr, et al. N. Gopalswamy, D. Odstrcil, and H. Cremades. 2010. "Understanding Interplanetary Shock Dynamics in the Inner Heliosphere with New Observations and Modeling Techniques: Case studies on the 2010-04-03 and 2010-08-01 events." AGU Fall Meeting Abstracts 1858-

    St Cyr, O. C., C. Henning, H. Xie, et al. D. Odstrcil, L. Mays, H. Cremades, F. Iglesias, N. Gopalswamy, and M. L. Kaiser. 2010. "Understanding Interplanetary Shock Dynamics in the Inner Heliosphere with New Observations and Modeling Techniques." AGU Fall Meeting Abstracts 1850-

    Akiyama, S., N. Gopalswamy, H. Xie, et al. S. Yashiro, P. A. Makela, O. C. St Cyr, R. J. MacDowall, and M. L. Kaiser. 2010. "Radio-Loud Coronal Mass Ejections without Shocks near Earth." AGU Fall Meeting Abstracts A7-

    Gopalswamy, N. 2010. "Corona Mass Ejections: a Summary of Recent Results." 20th National Solar Physics Meeting 108-130

    Michalek, G. J., N. Gopalswamy, and S. Yashiro. 2010. "Expansion speed of Coronal Mass Ejections ." EGU General Assembly Conference Abstracts 12 5142

    Gopalswamy, N., and J. M. Davila. 2010. "International Space Weather Initiative (ISWI)." 20th National Solar Physics Meeting 160

    Gopalswamy, N., S. Yashiro, S. Akiyama, et al. S. L. Freeland, J. M. Davila, R. A. Howard, and J. Bougeret. 2010. "Estimation of coronal magnetic field using the type II radio burst associated with a fast CME." 38th COSPAR Scientific Assembly 38 1808

    Davila, J. M., and N. Gopalswamy. 2010. "The International Space Weather Initiative." 38th COSPAR Scientific Assembly 38 4192

    Shahin, A. A., and N. Gopalswamy. 2010. "Investigating the relation between Coronal Holes and CMEs during the Rise and Maximum and Declining Phases of the Solar Cycle 23." 38th COSPAR Scientific Assembly 38 1918

    Mahrous, A., A. Radi, M. Youssef, et al. A. Faheem, S. Ahmed, and N. Gopalswamy. 2010. "Prediction of the interplanetary Coronal Mass Ejection and it's associated shock by using neural network." 38th COSPAR Scientific Assembly 38 1905

    Gopalswamy, N., S. Hasan, and A. Ambastha. 2010. "Heliophysical Processes." Heliophysical Processes (Edited by N Gopalswamy; S Hasan; and A Ambastha) Astrophysics and Space Science Proceedings; 282 pages; ISBN: 978-3-642-11340-6; 2010 [10.1007/978-3-642-11341-3]

    Gopalswamy, N. 2010. "Large-Scale Solar Eruptions." Heliophysical Processes (Edited by N Gopalswamy; S Hasan; and A Ambastha) Astrophysics and Space Science Proceedings; 282 pages; ISBN: 978-3-642-11340-6; 2010 53 53 [10.1007/978-3-642-11341-3_4]

    Gopalswamy, N. 2010. "The CME link to geomagnetic storms." IAU Symposium 264 326-335 [Full Text (Link)]

    Gopalswamy, N., S. Akiyama, S. Yashiro, and P. Auml;kelä. 2010. "Coronal Mass Ejections from Sunspot and Non-Sunspot Regions." Magnetic Coupling between the Interior and Atmosphere of the Sun 289-307 [10.1007/978-3-642-02859-5_24]

    Gopalswamy, N., H. Xie, P. Måkelå, et al. S. Akiyama, S. Yashiro, M. Kaiser, R. Howard, and J. Bougeret. 2010. "Interplanetary Shocks Lacking Type II Radio Bursts." The Astrophysical Journal 710 1111-1126 [ 10.1088/0004-637X/710/2/1111]

    Gopalswamy, N., P. Måkelå, H. Xie, S. Akiyama, and S. Yashiro. 2010. "Solar Sources of 'Driverless' Interplanetary Shocks." Twelfth International Solar Wind Conference 1216 452-458 [ 10.1063/1.3395902]

    Shanmugaraju, A., Y. Moon, K. Cho, et al. S. Bong, N. Gopalswamy, S. Akiyama, S. Yashiro, S. Umapathy, and B. Vrsnak. 2010. "Quasi-Periodic Oscillations in Lasco Coronal Mass Ejection Speeds." The Astrophysical Journal 708 450-455 [ 10.1088/0004-637X/708/1/450]

    Ramesh, R., C. Kathiravan, S. Kartha, and N. Gopalswamy. 2010. "Radioheliograph Observations of Metric Type II Bursts and the Kinematics of Coronal Mass Ejections." The Astrophysical Journal 712 188-193 [ 10.1088/0004-637X/712/1/188]

    Gopalswamy, N., and P. MÄkelÄ. 2010. "Long-duration Low-frequency Type III Bursts and Solar Energetic Particle Events." The Astrophysical Journal 721 L62-L66 [ 10.1088/2041-8205/721/1/L62]

    Gopalswamy, N., S. Yashiro, H. Xie, S. Akiyama, and P. MÄkelÄ. 2010. "Large Geomagnetic Storms Associated with Limb Halo Coronal Mass Ejections." Advances in Geosciences - Volume 21: Solar Terrestrial (ST) 21 71

    Gopalswamy, N., S. Yashiro, G. Michalek, et al. H. Xie, P. MÄkelÄ, A. Vourlidas, and R. Howard. 2010. "A Catalog of Halo Coronal Mass Ejections from SOHO." Sun and Geosphere 5 7-16

    Liu, Y., S. Akiyama, N. Gopalswamy, et al. J. Mason, N. Nitta, A. Tylka, S. Yashiro, and V. Yurchyshyn. 2009. "Properties of Solar Active Regions and Their Relationship with Solar Eruption: a Statistical Study." AAS/Solar Physics Division Meeting #40 40 #09.20-

    St Cyr, O. C., H. Xie, M. L. Mays, et al. J. M. Davila, H. R. Gilbert, S. I. Jones, W. D. Pesnell, N. Gopalswamy, J. B. Gurman, S. Yashiro, J. Wuelser, R. A. Howard, B. J. Thompson, and W. T. Thompson. 2009. "Recent STEREO Observations of Coronal Mass Ejections." AGU Fall Meeting Abstracts A1491-

    Gopalswamy, N. 2009. "Coronal mass ejections and space weather." Climate and Weather of the Sun-Earth System (CAWSES) Selected Papers from the 2007 Kyoto Symposium Edited by T Tsuda; R Fujii; K Shibata; and MA Geller Tokyo: TERRAPUB 2009 [ 77-120]

    Bougeret, J., R. von Steiger, D. Webb, et al. S. Ananthakrishnan, H. Cane, N. Gopalswamy, S. Kahler, R. Lallement, B. Sanahuja, K. Shibata, M. Vandas, and F. Verheest. 2009. "Commission 49: Interplanetary Plasma and Heliosphere." Transactions of the International Astronomical Union Series A ( 27): 124-144 [ 10.1017/S1743921308025374]

    Thompson, B. J., N. Gopalswamy, J. M. Davila, and H. Haubold. 2009. "Putting the “I” in IHY: The United Nations Report for the International Heliophysical Year 2007." Putting the “I” in IHY: The United Nations Report for the International Heliophysical Year 2007 (edited by Barbara J Thompson; Natchimuthuk Gopalswamy; Joseph M Davila and Hans J Haubold) ISBN 978-3-211-99179-4 Published by Springer Dordrecht The Netherlands

    Gopalswamy, N., S. Akiyama, and S. Yashiro. 2009. "Major solar flares without coronal mass ejections." IAU Symposium 257 283-286 [ 10.1017/S174392130902941X]

    Yashiro, S., and N. Gopalswamy. 2009. "Statistical relationship between solar flares and coronal mass ejections." IAU Symposium 257 233-243 [ 10.1017/S1743921309029342]

    Davila, J. M., N. Gopalswamy, and B. J. Thompson. 2009. "Universal processes in heliophysics." IAU Symposium 257 11-16 [ 10.1017/S1743921309029032]

    Gopalswamy, N., and D. Webb. 2009. "Universal Heliophysical Processes." IAU Symposium 257

    Gopalswamy, N., and D. Webb. 2009. "Universal Heliophysical Processes (IAU S257)." Universal Heliophysical Processes (IAU S257)( by Natchimuthukonar Gopalswamy; David F Webb; Cambridge; UK: Cambridge University Press; 2009

    Xie, H. N., N. Gopalswamy, and O. C. St Cyr. 2009. "Modeling and prediction of fast CME/shocks associated with type II bursts." IAU Symposium 257 489-491 [ 10.1017/S1743921309029755]

    Mäkelä, P., N. Gopalswamy, S. Yashiro, et al. S. Akiyama, H. N. Xie, and E. Valtonen. 2009. "SEPs and CMEs during cycle 23." IAU Symposium 257 475-477 [ 10.1017/S174392130902972X]

    Gopalswamy, N., A. Dal Lago, S. Yashiro, and S. Akiyama. 2009. "The Expansion and Radial Speeds of Coronal Mass Ejections." Central European Astrophysical Bulletin 33 115-124

    Gopalswamy, N., S. Yashiro, M. Temmer, et al. J. M. Davila, W. T. Thompson, S. I. Jones, R. T. Mcateer, J. Wuelser, S. L. Freeland, and R. A. Howard. 2009. "EUV Wave Reflection from a Coronal Hole." The Astrophysical Journal 691 (2): L123-L127 [10.1088/0004-637X/691/2/L123]

    Gopalswamy, N., P. auml;kelä, H. Xie, S. Akiyama, and S. Yashiro. 2009. "CME interactions with coronal holes and their interplanetary consequences." Journal of Geophysical Research (Space Physics) 114 0 [10.1029/2008JA013686]

    Gopalswamy, N. 2009. "Introduction to special section on Large Geomagnetic Storms." Journal of Geophysical Research (Space Physics) 114 0 [10.1029/2008JA014026]

    Asai, A., K. Shibata, T. Ishii, et al. M. Oka, R. Kataoka, K. Fujiki, and N. Gopalswamy. 2009. "Evolution of the anemone AR NOAA 10798 and the related geo-effective flares and CMEs." Journal of Geophysical Research (Space Physics) 114 0 [10.1029/2008JA013291]

    Gopalswamy, N., S. Yashiro, G. Michalek, et al. G. Stenborg, A. Vourlidas, S. Freeland, and R. Howard. 2009. "The SOHO/LASCO CME Catalog." Earth Moon and Planets 104 295-313 [ 10.1007/s11038-008-9282-7]

    Gopalswamy, N., G. Eichhorn, T. Sakurai, and H. Haubold. 2009. "Preface to the Proceedings of the European General Assembly and the United Nations Workshop." Earth Moon and Planets 104 139-140 [ 10.1007/s11038-008-9278-3]

    Gopalswamy, N., S. Akiyama, S. Yashiro, G. Michalek, and R. Lepping. 2009. "Erratum to “Solar sources and geospace consequences of interplanetary magnetic clouds observed during solar cycle 23—Paper 1” [J. Atmos. Sol.-Terr. Phys. 70(2-4) (2008) 245-253]." Journal of Atmospheric and Solar-Terrestrial Physics 71 1005-1009 [ 10.1016/j.jastp.2008.10.016]

    Gopalswamy, N. 2009. "Halo coronal mass ejections and geomagnetic storms." Earth Planets and Space [Full Text (Link)] [ 61]

    Gopalswamy, N., W. Thompson, J. Davila, et al. M. Kaiser, S. Yashiro, P. auml;kelä, G. Michalek, J. Bougeret, and R. Howard. 2009. "Relation Between Type II Bursts and CMEs Inferred from STEREO Observations." Solar Physics 259 227-254 [ 10.1007/s11207-009-9382-1]

    Xie, O., O. Xie, O. Xie, et al. N. Gopalswamy, S. Yashiro, J. Krall, M. Kramar, and J. Davila. 2009. "On the Origin, 3D Structure and Dynamic Evolution of CMEs Near Solar Minimum." Solar Physics 259 (1-2): 143-161 [10.1007/s11207-009-9422-x]

    Michalek, G., N. Gopalswamy, and S. Yashiro. 2009. "Expansion Speed of Coronal Mass Ejections." Solar Physics 260 401-406 [ 10.1007/s11207-009-9464-0]

    Gopalswamy, N. 2008. "Type II Radio Emission and Solar Energetic Particle Events." American Institute of Physics Conference Series 1039 196-202 [ 10.1063/1.2982445]

    Gopalswamy, N. 2008. "Origin of Geoeffective Coronal Mass Ejections during Solar Cycle 23." 37th COSPAR Scientific Assembly 37 1057

    Yashiro, S., G. Michalek, S. Akiyama, N. Gopalswamy, and R. Howard. 2008. "Spatial Relationship between Solar Flares and Coronal Mass Ejections." The Astrophysical Journal 673 1174-1180 [ 10.1086/524927]

    Gopalswamy, N., S. Akiyama, S. Yashiro, G. Michalek, and R. Lepping. 2008. "Solar sources and geospace consequences of interplanetary magnetic clouds observed during solar cycle 23." Journal of Atmospheric and Solar-Terrestrial Physics 70 245-253 [ 10.1016/j.jastp.2007.08.070]

    Shanmugaraju, A., Y. Moon, K. Cho, N. Gopalswamy, and S. Umapathy. 2008. "Investigation of CME dynamics in the LASCO field of view." Astronomy and Astrophysics 484 511-516 [ 10.1051/0004-6361:20078978]

    Lepping, R., C. Wu, N. Gopalswamy, and D. Berdichevsky. 2008. "Average Thickness of Magnetosheath Upstream of Magnetic Clouds at 1 AU versus Solar Longitude of Source." Solar Physics 248 125-139 [ 10.1007/s11207-007-9111-6]

    Michalek, G., N. Gopalswamy, and S. Yashiro. 2008. "Space Weather Application Using Projected Velocity Asymmetry of Halo CMEs." Solar Physics 248 113-123 [ 10.1007/s11207-008-9126-7]

    Gopalswamy, N., S. Yashiro, S. Akiyama, et al. P. auml;kelä, H. Xie, M. Kaiser, R. Howard, and J. Bougeret. 2008. "Coronal mass ejections, type II radio bursts, and solar energetic particle events in the SOHO era." Annales Geophysicae 26 3033-3047 [ 10.5194/angeo-26-3033-2008]

    Schmidt, J., and N. Gopalswamy. 2008. "Synthetic radio maps of CME-driven shocks below 4 solar radii heliocentric distance." Journal of Geophysical Research (Space Physics) 113 8104 [10.1029/2007JA013002]

    Davila, J., N. Gopalswamy, B. Thompson, and H. Haubold. 2008. "International Heliophysical Year 2007: A Report from the UN/NASA Workshop Bangalore - India, 27 November 1 December 2006." Earth Moon and Planets 103 9-24 [ 10.1007/s11038-008-9231-5]

    Yashiro, S., G. Michalek, and N. Gopalswamy. 2008. "A comparison of coronal mass ejections identified by manual and automatic methods." Annales Geophysicae 26 3103-3112 [ 10.5194/angeo-26-3103-2008]

    Kim, K., N. Gopalswamy, and H. Xie. 2008. "Comment on 'Prediction of the 1-AU arrival times of CME-associated interplanetary shocks: Evaluation of an empirical interplanetary shock propagation model'." Journal of Geophysical Research (Space Physics) 113 10105 [10.1029/2008JA013030]

    Owens, M., N. Crooker, N. Schwadron, et al. T. Horbury, S. Yashiro, O. Xie, O. Xie, O. Xie, and N. Gopalswamy. 2008. "Conservation of open solar magnetic flux and the floor in the heliospheric magnetic field." Geophysical Research Letters 35 20108 [10.1029/2008GL035813]

    Gopalswamy, N. 2008. "Solar connections of geoeffective magnetic structures." Journal of Atmospheric and Solar-Terrestrial Physics 70 2078-2100 [ 10.1016/j.jastp.2008.06.010]

    Rabello Soares, M., A. Rabiu, N. Gopalswamy, et al. B. Thompson, J. Davila, and A. Sobrinho. 2008. "Outreach activities during the 2006 total solar eclipse sponsored by the International Heliophysical Year." Advances in Space Research 42 1792-1799 [10.1016/j.asr.2007.04.014]

    Kitamura, M., D. Wentzel, A. Henden, et al. J. Bennett, H. Al-Naimiy, A. Mathai, N. Gopalswamy, J. M. Davila, B. J. Thompson, D. Webb, and H. Haubold. 2007. "The United Nations Basic Space Science Initiative: the TRIPOD concept." IAU Special Session 5 277-284 [ 10.1017/S1743921307007156]

    Gopalswamy, N., J. M. Davila, B. J. Thompson, and H. Haubold. 2007. "The United Nations Basic Space Science Initiative for IHY 2007." IAU Special Session 5 295-302 [ 10.1017/S1743921307007181]

    Gopalswamy, N. 2007. "Energetic Phenomena on the Sun." Kodai School on Solar Physics 919 275-313 [ 10.1063/1.2756790]

    Gopalswamy, N. 2007. "Energetic Particles Related with Coronal and Interplanetary Shocks." Lecture Notes in Physics; Berlin Springer Verlag 725 139

    Akiyama, S., S. Yashiro, and N. Gopalswamy. 2007. "The CME-productivity associated with flares from two active regions." Advances in Space Research 39 1467-1470 [Full Text (Link)]

    Zhang, J., I. Richardson, D. Webb, et al. N. Gopalswamy, E. Huttunen, J. Kasper, N. Nitta, W. Poomvises, B. Thompson, C. Wu, S. Yashiro, and A. Zhukov. 2007. "Solar and interplanetary sources of major geomagnetic storms (Dst <= -100 nT) during 1996-2005." Journal of Geophysical Research (Space Physics) 112 10102 [10.1029/2007JA012321]

    Gopalswamy, N., S. Yashiro, and S. Akiyama. 2007. "Geoeffectiveness of halo coronal mass ejections." Journal of Geophysical Research (Space Physics) 112 6112 [10.1029/2006JA012149]

    Davila, J., N. Gopalswamy, and B. Thompson. 2007. "The International Heliophysical Year." Romanian Astronomical Journal 17 3-13

    Zhang, J., I. Richardson, D. Webb, et al. N. Gopalswamy, E. Huttunen, J. Kasper, N. Nitta, W. Poomvises, B. Thompson, C. Wu, S. Yashiro, and A. Zhukov. 2007. "Correction to 'Solar and interplanetary sources of major geomagnetic storms (Dst <= -100 nT) during 1996-2005'." Journal of Geophysical Research (Space Physics) 112 12103 [10.1029/2007JA012891]

    Michalek, G., N. Gopalswamy, and H. Xie. 2007. "Width of Radio-Loud and Radio-Quiet CMEs." Solar Physics 246 409-414 [ 10.1007/s11207-007-9062-y]

    Michalek, G., N. Gopalswamy, and S. Yashiro. 2007. "Prediction of Space Weather Using an Asymmetric Cone Model for Halo CMEs." Solar Physics 246 399-408 [Full Text (Link)]

    Kozyra, J. U., K. Shibata, N. J. Fox, et al. S. Basu, A. J. Coster, J. M. Davila, N. Gopalswamy, K. Liou, G. Lu, I. R. Mann, D. Pallamraju, L. J. Paxton, W. K. Peterson, E. R. Talaat, A. T. Weatherwax, C. A. Young, and L. J. Zanetti. 2006. "Investigating the state of the Sun-Earth system during extreme events: First science results of a worldwide online conference series." AGU Fall Meeting Abstracts A1-

    Oung, C. A., B. J. Thompson, J. Davila, and N. Gopalswamy. 2006. "IHY-CAWSES Data base." 2nd UN/NASA Workshop on International Heliophysical Year and Basic Space Science -

    Davila, J. M., B. J. Thompson, and N. Gopalswamy. 2006. "The International Heliophysical Year (IHY) 2007." African Skies 10 4

    Schwenn, R., J. Raymond, D. R. Alexander, et al. A. Ciaravella, N. Gopalswamy, R. A. Howard, H. Hudson, P. Kaufmann, A. Klassen, D. Maia, G. Munoz-Martinez, M. Pick, M. J. Reiner, N. Srivastava, D. Tripathi, A. Vourlidas, Y. Wang, and J. Zhang. 2006. "Coronal Observations of CMEs." Coronal Mass Ejections; Space Sciences Series of ISSI; Volume 21 ISBN 978-0-387-45086-5 Springer; 2006; 127 [10.1007/978-0-387-45088-9_9]

    Yashiro, S., N. Gopalswamy, S. Akiyama, and R. A. Howard. 2006. "Associations of Coronal Mass Ejections as a function of X-ray Flare Properties." 36th COSPAR Scientific Assembly 36 1778

    Akiyama, S., N. Gopalswamy, and S. Yashiro. 2006. "The CME-productivity associated with flares from two ARs." 36th COSPAR Scientific Assembly 36 556

    Haubold, H., B. J. Thompson, H. Al-Naimiy, et al. J. M. Davila, N. Gopalswamy, K. Groves, and D. Scherrer. 2006. "The IHY/United Nations Distributed Observatory Development Program." 36th COSPAR Scientific Assembly 36 3304

    Gopalswamy, N., J. M. Davila, and B. J. Thompson. 2006. "International coordinated efforts for IHY 2007." 36th COSPAR Scientific Assembly 36 2743

    Gopalswamy, N., S. Yashiro, and S. Akiyama. 2006. "Geoeffectiveness of CMEs: A simple analysis using halo CMEs from SOHO." 36th COSPAR Scientific Assembly 36 2723

    Asai, A., T. Ishii, K. Shibata, and N. Gopalswamy. 2006. "Anemone structure of AR NOAA 10798 and related geo-effective flares and CMEs." 36th COSPAR Scientific Assembly 36 2406

    Tsurutani, B., R. McPherron, W. D. Alarcon, et al. G. Lu, N. Gopalswamy, and F. Guarnieri. 2006. "Magnetic Storms Caused by Corotating Solar Wind Streams." Recurrent Magnetic Storms: Corotating Solar Wind 167 1

    McPherron, R., W. D. Alarcon, G. Lu, H. eacute;, and N. Gopalswamy. 2006. "Recurrent Magnetic Storms: Corotating Solar Wind Streams Geophysical Monograph 167." Recurrent Magnetic Storms: Corotating Solar Wind 167

    Gopalswamy, N., and A. Bhattacharyya. 2006. "Solar Influence on the Heliosphere and Earth's Environment: Recent Progress and Prospects." Proceedings of the ILWS Workshop

    Tsurutani, B., R. McPherron, W. D. Alarcon, et al. G. Lu, J. Sobral, and N. Gopalswamy. 2006. "Preface." Recurrent Magnetic Storms: Corotating Solar Wind 167 7 [10.1029/167GM01]

    Macdowall, R. J., N. Gopalswamy, M. L. Kaiser, et al. L. Demaio, S. Bale, J. W. Hewitt, J. Kasper, A. Lazarus, R. A. Howard, D. L. Jones, M. J. Reiner, and K. Weiler. 2006. "Microsat and Lunar-Based Imaging of Radio Bursts." Planetary Radio Emissions VI 491

    Davila, J. M., N. Gopalswamy, and B. J. Thompson. 2006. "Preparing for the International Heliophysical Year (IHY) 2007." Proceedings of the ILWS Workshop 231

    Gopalswamy, N., S. Yashiro, and S. Akiyama. 2006. "Coronal mass ejections and space weather due to extreme events." Proceedings of the ILWS Workshop 79

    Webb, D., and N. Gopalswamy. 2006. "Coronal mass ejections and space weather." Proceedings of the ILWS Workshop 71

    Davila, J. M., B. J. Thompson, and N. Gopalswamy. 2006. "Planning the International Heliophysical Year (IHY)." United Nations Programme on Space Applications 17 37

    Asai, A., T. Ishii, K. Shibata, and N. Gopalswamy. 2006. "Anemone structure of Active Region NOAA 10798 and related geo-effective flares/ CMEs." IAU Joint Discussion 3

    Gopalswamy, N., S. Yashiro, M. L. Kaiser, and J. Bougeret. 2006. "Solar Energetic Particles and CME-driven Shocks." IAU Joint Discussion 1

    Gopalswamy, N., S. Yashiro, and R. A. Howard. 2006. "Observational Properties of CMEs from a Decade-Long Observations by SOHO." SOHO-17 10 Years of SOHO and Beyond 617

    Gopalswamy, N. 2006. "United Nations Basic Space Science Initiative Programme for the International Heliophysical Year 2007." United Nations Programme on Space Applications 17 47

    Gopalswamy, N., R. J. Macdowall, M. L. Kaiser, et al. L. Demaio, S. Bale, R. A. Howard, D. L. Jones, J. Kasper, N. Kassim, J. Lazio, K. Weiler, and M. J. Reiner. 2006. "Mission Concepts for Spacecraft and Lunar-based Radio Source Imaging at Frequencies below the Ionospheric Cutoff." IAU Joint Discussion 12

    Gopalswamy, N., R. J. Macdowall, M. L. Kaiser, et al. S. Bale, M. Maksimovic, and J. Bougeret. 2006. "Scientific Justification For The Low- Frequency Radio Measurements By The Solar Orbiter Mission." Second Solar Orbiter Workshop 641

    Gopalswamy, N., J. Davila, B. Thompson, and H. Haubold. 2006. "The United Nations Basic Space Science Initiative for IHY 2007." IAU Special Session 5

    Webb, D., and N. Gopalswamy. 2006. "The IHY Program and Associated IAU Activities." IAU Special Session 5

    Young, C. A., B. J. Thompson, J. M. Davila, and N. Gopalswamy. 2006. "IHY-CAWSES Data base." 2nd UN/NASA Workshop on International Heliophysical Year and Basic Space Science

    Gopalswamy, N. 2006. "General Discussion on Donor Programs." 2nd UN/NASA Workshop on International Heliophysical Year and Basic Space Science

    Gopalswamy, N. 2006. "General Discussion on Donor Programs N Gopalswamy." 2nd UN/NASA Workshop on International Heliophysical Year and Basic Space Science

    Gopalswamy, N. 2006. "Coronal Mass Ejections in the Heliosphere." 2nd UN/NASA Workshop on International Heliophysical Year and Basic Space Science

    Gopalswamy, N., J. M. Davila, B. J. Thompson, and H. Haubold. 2006. "IHY/UNBSS Program: Success Stories." 2nd UN/NASA Workshop on International Heliophysical Year and Basic Space Science

    Gopalswamy, N. 2006. "Radio Observations of Solar Eruptions." Solar Physics with the Nobeyama Radioheliograph 81-94

    Gopalswamy, N. 2006. "Coronal Mass Ejections and Type II Radio Bursts." Washington DC American Geophysical Union Geophysical Monograph Series 165 207

    Gopalswamy, N., R. Mewaldt, and J. Torsti. 2006. "Solar Eruptions and Energetic Particles: An Introduction." Washington DC American Geophysical Union Geophysical Monograph Series 165 1

    Gopalswamy, N., R. Mewaldt, and J. Torsti. 2006. "Solar Eruptions and Energetic Particles." Washington DC American Geophysical Union Geophysical Monograph Series 165 10.1029/GM165

    Xie, H., N. Gopalswamy, P. Manoharan, et al. A. Lara, S. Yashiro, and S. Lepri. 2006. "Long-lived geomagnetic storms and coronal mass ejections." Journal of Geophysical Research (Space Physics) 111 1103 [10.1029/2005JA011287]

    Aguilar-Rodriguez, E., X. Blanco-Cano, and N. Gopalswamy. 2006. "Composition and magnetic structure of interplanetary coronal mass ejections at 1 AU." Advances in Space Research 38 522-527 [ 10.1016/j.asr.2005.01.051]

    Schwenn, R., J. Raymond, D. Alexander, et al. A. Ciaravella, N. Gopalswamy, R. Howard, H. Hudson, P. Kaufmann, A. Klassen, D. Maia, G. Munoz-Martinez, M. Pick, M. Reiner, N. Srivastava, D. Tripathi, A. Vourlidas, Y. Wang, and J. Zhang. 2006. "Coronal Observations of CMEs. Report of Working Group A." Space Science Reviews 123 127-176 [ 10.1007/s11214-006-9016-y]

    Nakagawa, T., N. Gopalswamy, and S. Yashiro. 2006. "Solar wind speed within 20 RS of the Sun estimated from limb coronal mass ejections." Journal of Geophysical Research (Space Physics) 111 1108 [10.1029/2005JA011249]

    Gopalswamy, N., Z. cacute;, D. Maia, et al. D. R. Alexander, H. Cremades, P. Kaufmann, D. Tripathi, and Y. Wang. 2006. "The Pre-CME Sun." Space Science Reviews 303 [10.1007/978-0-387-45088-9_13]

    Howard, T., S. Tappin, N. Gopalswamy, et al. S. Akiyama, S. Yashiro, and J. Kasper. 2006. "Comment on “Interplanetary shocks unconnected with earthbound coronal mass ejections” by T. A. Howard and S. J. Tappin." Geophysical Research Letters 33 (11): L11108 [10.1029/2005GL024983]

    Tsurutani, B., R. McPherron, W. Gonzalez, et al. G. Lu, J. Sobral, and N. Gopalswamy. 2006. "Introduction to special section on corotating solar wind streams and recurrent geomagnetic activity." Journal of Geophysical Research (Space Physics) 111 7 [10.1029/2006JA011745]

    Gopalswamy, N. 2006. "Properties of Interplanetary Coronal Mass Ejections." Space Science Reviews 124 145-168 [ 10.1007/s11214-006-9102-1]

    Lara, A., N. Gopalswamy, H. Xie, et al. E. Mendoza-Torres, R. eacute;Rez-EríQuez, and G. Michalek. 2006. "Are halo coronal mass ejections special events?" Journal of Geophysical Research (Space Physics) 111 6107 [10.1029/2005JA011431]

    Gopalswamy, N. 2006. "Preface." Journal of Astrophysics and Astronomy 165 9

    Tsurutani, B., W. Gonzalez, A. Gonzalez, et al. F. Guarnieri, N. Gopalswamy, M. Grande, Y. Kamide, Y. Kasahara, G. Lu, I. Mann, R. McPherron, F. Soraas, and V. Vasyliunas. 2006. "Corotating solar wind streams and recurrent geomagnetic activity: A review." Journal of Geophysical Research (Space Physics) 111 7 [10.1029/2005JA011273]

    Tsurutani, B., R. McPherron, W. Gonzalez, et al. G. Lu, J. Sobral, and N. Gopalswamy. 2006. "Correction to 'Introduction to special section on corotating solar wind streams and recurrent geomagnetic activity'." Journal of Geophysical Research (Space Physics) 111 8 [10.1029/2006JA011980]

    Riley, P., C. Schatzman, H. Cane, I. Richardson, and N. Gopalswamy. 2006. "On the Rates of Coronal Mass Ejections: Remote Solar and In Situ Observations." The Astrophysical Journal 647 648-653 [ 10.1086/505383]

    Gopalswamy, N. 2006. "Coronal Mass Ejections of Solar Cycle 23." Journal of Astrophysics and Astronomy 27 243-254 [ 10.1007/BF02702527]

    Xie, H., N. Gopalswamy, L. Ofman, et al. G. Michalek, A. Lara, and S. Yashiro. 2006. "Improved input to the empirical coronal mass ejection (CME) driven shock arrival model from CME cone models." Space Weather 4 10002 [10.1029/2006SW000227]

    Yashiro, S., S. Akiyama, N. Gopalswamy, and R. Howard. 2006. "Different Power-Law Indices in the Frequency Distributions of Flares with and without Coronal Mass Ejections." The Astrophysical Journal 650 L143-L146 [ 10.1086/508876]

    Wu, C., R. Lepping, and N. Gopalswamy. 2006. "Relationships Among Magnetic Clouds, CMES, and Geomagnetic Storms." Solar Physics 239 (1-2): 449-460 [10.1007/s11207-006-0037-1]

    Michalek, G., N. Gopalswamy, A. Lara, and S. Yashiro. 2006. "Properties and geoeffectiveness of halo coronal mass ejections." Space Weather 4 10003 [10.1029/2005SW000218]

    Gopalswamy, N. 2006. "Consequences of Coronal Mass Ejections in the Heliosphere." Sun and Geosphere 1 020000-12

    Nitta, N., D. Reames, M. De Rosa, et al. Y. Liu, S. Yashiro, and N. Gopalswamy. 2006. "Solar Sources of Impulsive Solar Energetic Particle Events and Their Magnetic Field Connection to the Earth." ApJ 650 438-450 [ 10.1086/507442]

    Gopalswamy, N., H. N. Xie, S. Yashiro, and I. Usoskin. 2005. "Coronal Mass Ejections and Ground Level Enhancements." International Cosmic Ray Conference 1 169

    Xie, H. N., N. Gopalswamy, P. K. Manoharan, et al. S. Yashiro, A. Lara, and S. Lepri. 2005. "CMEs and Long-Lived Geomagnetic Storms: A Case Study." Coronal and Stellar Mass Ejections 226 475-476 [ 10.1017/S1743921305001092]

    Gopalswamy, N., S. Yashiro, S. Krucker, and R. A. Howard. 2005. "CME Interaction and the Intensity of Solar Energetic Particle Events." Coronal and Stellar Mass Ejections 226 367-373 [ 10.1017/S1743921305000876]

    Macdowall, R. J., S. Bale, L. Demaio, et al. N. Gopalswamy, D. L. Jones, M. L. Kaiser, J. Kasper, M. J. Reiner, and K. Weiler. 2005. "Solar Imaging Radio Array (SIRA): a multispacecraft mission." Proc. SPIE 5659, Enabling Sensor and Platform Technologies for Spaceborne Remote Sensing 5659 284-292 [10.1117/12.578736]

    Aguilar-Rodriguez, E., N. Gopalswamy, R. J. Macdowall, S. Yashiro, and M. L. Kaiser. 2005. "A Study of the Drift Rate of Type II Radio Bursts at Different Wavelengths." Solar Wind 11/SOHO 16; Connecting Sun and Heliosphere 592 393

    Macdowall, R. J., N. Gopalswamy, M. L. Kaiser, et al. S. Bale, L. Demaio, J. W. Hewitt, J. Kasper, A. Lazarus, R. A. Howard, D. L. Jones, M. J. Reiner, and K. Weiler. 2005. "The Solar Imaging Radio Array: Space-Based Imaging of Solar; Heliospheric; Magnetospheric; and Astrophysical Sources at Frequencies below the Ionospheric Cutoff." From Clark Lake to the Long Wavelength Array: Bill Erickson's 345 476

    Gopalswamy, N. 2005. "Workshop Highlights Progress in Solar-Heliospheric Physics." EOS Transactions 86 525-530 [ 10.1029/2005EO500006]

    Melrose, D., J. A. Klimchuk, A. Benz, et al. I. Craig, N. Gopalswamy, R. M. Harrison, B. Kozlovsky, G. Poletto, K. Schrijver, L. van Driel-Gesztelyi, and J. Wang. 2005. "Commission 10: Solar Activity." Proceedings of the International Astronomical Union 1 (T26A): 75-88 [10.1017/S1743921306004388]

    Wu, C., S. Wu, M. Dryer, et al. C. Fry, D. Berdichevsky, Z. Smith, T. Detman, N. Gopalswamy, R. Skoug, T. Zurbuchen, and C. Smith. 2005. "Flare-generated shock evolution and geomagnetic storms during the 'Halloween 2003 epoch': 29 October to 2 November." Journal of Geophysical Research (Space Physics) 110 9 [10.1029/2005JA011011]

    Michalek, G., N. Gopalswamy, and S. Yashiro. 2005. "Estimation of Projection Effect of CMEs from the Onset Time of the Shock-Associated Type III Radio Burst." Acta Astronomica 55 151-158

    Gopalswamy, N., A. Lara, P. Manoharan, and R. Howard. 2005. "An empirical model to predict the 1-AU arrival of interplanetary shocks." Advances in Space Research 36 2289-2294 [ 10.1016/j.asr.2004.07.014]

    Gopalswamy, N., L. Barbieri, G. Lu, S. Plunkett, and R. Skoug. 2005. "Introduction to the special section: Violent Sun-Earth connection events of October-November 2003." Geophysical Research Letters 32 3 [10.1029/2005GL022348]

    Yurchyshyn, V., S. Yashiro, V. Abramenko, H. Wang, and N. Gopalswamy. 2005. "Statistical Distributions of Speeds of Coronal Mass Ejections." The Astrophysical Journal 619 (1): 599-603 [10.1086/426129]

    Wang, A., S. Wu, and N. Gopalswamy. 2005. "Magnetohydrodynamic analysis of January 20 2001; CME-CME interaction event." Washington DC American Geophysical Union Geophysical Monograph Series 156 185-195 [ 10.1029/156GM21]

    Gopalswamy, N., S. Yashiro, G. Michalek, et al. H. Xie, R. Lepping, and R. Howard. 2005. "Solar source of the largest geomagnetic storm of cycle 23." Geophysical Research Letters 32 12 [10.1029/2004GL021639]

    Lara, A., N. Gopalswamy, R. Oacute;pez, et al. S. Yashiro, H. Xie, and J. eacute;s-Galicia. 2005. "Coronal Mass Ejections and Galactic Cosmic-Ray Modulation." The Astrophysical Journal 625 441-450 [ 10.1086/428565]

    Gopalswamy, N., S. Yashiro, Y. Liu, et al. G. Michalek, A. Vourlidas, M. Kaiser, and R. Howard. 2005. "Coronal mass ejections and other extreme characteristics of the 2003 October–November solar eruptions." J. Geophys. Res. 110 (A9): A09S15 [10.1029/2004JA010958]

    Gopalswamy, N., L. Barbieri, E. Cliver, et al. G. Lu, S. Plunkett, and R. Skoug. 2005. "Introduction to violent Sun-Earth connection events of October-November 2003." Journal of Geophysical Research (Space Physics) 110 9 [10.1029/2005JA011268]

    Yashiro, S., N. Gopalswamy, S. Akiyama, G. Michalek, and R. Howard. 2005. "Visibility of coronal mass ejections as a function of flare location and intensity." Journal of Geophysical Research (Space Physics) 110 12 [10.1029/2005JA011151]

    Gopalswamy, N., and J. Torsti. 2005. "Introduction to special section on Solar Coronal Mass Ejections and Energetic Particles." Journal of Geophysical Research (Space Physics) 110 12 [10.1029/2005JA011523]

    Aguilar-Rodriguez, E., N. Gopalswamy, R. MacDowall, S. Yashiro, and M. Kaiser. 2005. "A universal characteristic of type II radio bursts." Journal of Geophysical Research (Space Physics) 110 12 [10.1029/2005JA011171]

    Gopalswamy, N., E. Aguilar-Rodriguez, S. Yashiro, et al. S. Nunes, M. Kaiser, and R. Howard. 2005. "Type II radio bursts and energetic solar eruptions." Journal of Geophysical Research (Space Physics) 110 12 [10.1029/2005JA011158]

    Lara, A., N. Gopalswamy, R. Caballero, and S. Yashiro. 2004. "Coronal Mass Ejections and Galactic Cosmic Ray Modulation." 35th COSPAR Scientific Assembly 35 2926

    Aguilar-Rodriguez, E., X. Blanco-Cano, and N. Gopalswamy. 2004. "Composition and magnetic structure of interplanetary coronal mass ejections at 1 AU." 35th COSPAR Scientific Assembly 35 2411

    Gopalswamy, N. 2004. "Plasma and magnetic field of the solar wind." 35th COSPAR Scientific Assembly 35 2396

    Gopalswamy, N. 2004. "Coronal Mass Ejections and Solar Particle Events in Solar Cycle 23." 35th COSPAR Scientific Assembly 35 2358

    Nakagawa, T., N. Gopalswamy, S. Yashiro, and A. Matsuoka. 2004. "Estimation of solar wind speed within 20Rs of the Sun by using limb CMEs." 35th COSPAR Scientific Assembly 35 1632

    Gopalswamy, N. 2004. "Interplanetary Radio Bursts." Astrophysics and Space Science Library 314 305 [10.1007/1-4020-2814-8_15]

    Gopalswamy, N., W. Lu, S. Yashiro, M. Shimojo, and K. Shibasaki. 2004. "Prominence eruptions and coronal mass ejection: a statistical study using microwave observations." Annual Report of the National Astronomical Observatory of Japan 18

    Yashiro, S., N. Gopalswamy, E. Cliver, et al. D. Reames, M. L. Kaiser, and R. A. Howard. 2004. "Association of Coronal Mass Ejections and Type II Radio Bursts with Impulsive Solar Energetic Particle Events." The Solar-B Mission and the Forefront of Solar Physics 325 401

    Gopalswamy, N. 2004. "A Global Picture of CMEs in the Inner Heliosphere." The Sun and the Heliosphere as an Integrated System 317 201

    Howard, R. A., R. J. Macdowall, N. Gopalswamy, et al. M. L. Kaiser, M. J. Reiner, S. Bale, D. L. Jones, J. Kasper, and K. Weiler. 2004. "Solar Imaging Radio Array (SIRA): Imaging solar and magnetospheric and astrophysical sources at < 15 MHz." Bulletin of the American Astronomical Society 36 1097

    Gopalswamy, N., S. Nunes, S. Yashiro, and R. Howard. 2004. "Variability of solar eruptions during cycle 23." Advances in Space Research 34 391-396 [ 10.1016/j.asr.2003.10.054]

    Gopalswamy, N., M. Shimojo, W. Lu, et al. S. Yashiro, K. Shibasaki, and R. Howard. 2004. "On coronal streamer changes." Advances in Space Research 33 676-680 [ 10.1016/S0273-1177(03)00236-9]

    Yashiro, S., N. Gopalswamy, O. Michalek, et al. O. Michalek, O. Michalek, S. Plunkett, N. Rich, and R. Howard. 2004. "A catalog of white light coronal mass ejections observed by the SOHO spacecraft." Journal of Geophysical Research (Space Physics) 109 7105 [10.1029/2003JA010282]

    Manoharan, P., N. Gopalswamy, S. Yashiro, et al. A. Lara, G. Michalek, and R. Howard. 2004. "Influence of coronal mass ejection interaction on propagation of interplanetary shocks." Journal of Geophysical Research (Space Physics) 109 6109 [10.1029/2003JA010300]

    Michałek, G., N. Gopalswamy, A. Lara, and P. Manoharan. 2004. "Arrival time of halo coronal mass ejections in the vicinity of the Earth." Astronomy and Astrophysics 423 729-736 [ 10.1051/0004-6361:20047184]

    Vršnak, B., D. Zcaron;djak, D. Sudar, and N. Gopalswamy. 2004. "Kinematics of coronal mass ejections between 2 and 30 solar radii. What can be learned about forces governing the eruption?" Astronomy and Astrophysics 423 717-728 [10.1051/0004-6361:20047169]

    Emslie, A., H. Kucharek, B. Dennis, et al. N. Gopalswamy, G. Holman, G. Share, A. Vourlidas, T. Forbes, P. Gallagher, G. Mason, T. Metcalf, R. Mewaldt, R. Murphy, R. Schwartz, and T. Zurbuchen. 2004. "Energy partition in two solar flare/CME events." Journal of Geophysical Research (Space Physics) 109 10104 [10.1029/2004JA010571]

    Gopalswamy, N. 2004. "Recent advances in the long-wavelength radio physics of the Sun." Planetary and Space Science 52 1399-1413 [ 10.1016/j.pss.2004.09.016]

    Gopalswamy, N., S. Yashiro, S. Krucker, G. Stenborg, and R. Howard. 2004. "Intensity variation of large solar energetic particle events associated with coronal mass ejections." Journal of Geophysical Research (Space Physics) 109 12105 [10.1029/2004JA010602]

    Gopalswamy, N. 2003. "Recent advances in long-wavelength radio physics of the Sun." EGS - AGU - EUG Joint Assembly 4473

    Gopalswamy, N. 2003. "Coronal mass ejections as a source of space Weather." EGS - AGU - EUG Joint Assembly 4456

    Macdowall, R. J., N. Gopalswamy, and M. L. Kaiser. 2003. "Low frequency radio astronomy from space: the Solar Radio Imaging Array." EGS - AGU - EUG Joint Assembly 12863

    González-Esparza, J., A. Lara, A. Aacute;n, and N. Gopalswamy. 2003. "A Numerical Study on the Evolution of CMEs and Shocks in the Interplanetary Medium." Solar Wind Ten 679 206-209 [ 10.1063/1.1618578]

    Gopalswamy, N., S. Yashiro, G. A. Stenborg, and R. A. Howard. 2003. "Coronal and Interplanetary Environment of Large Solar Energetic Particle Events." International Cosmic Ray Conference 6 3549

    Macdowall, R. J., N. Gopalswamy, and M. L. Kaiser. 2003. "The Solar Radio Imaging Array (SIRA) microsatellite mission." EGS - AGU - EUG Joint Assembly 12917

    Gopalswamy, N., A. Lara, S. Yashiro, S. M. Nunes, and R. A. Howard. 2003. "Coronal mass ejection activity during solar cycle 23." Solar Variability as an Input to the Earth's Environment 535 403-414

    Gopalswamy, N., S. Yashiro, G. J. Michalek, et al. M. L. Kaiser, R. A. Howard, R. Leske, T. T. Von Rosenvinge, and D. Reames. 2003. "Effect of CME Interactions on the Production of Solar Energetic Particles." Solar Wind Ten 679 608-611 [ 10.1063/1.1618668]

    Wu, C., R. P. Lepping, and N. Gopalswamy. 2003. "Variations of magnetic clouds and CMEs with solar activity cycle." Solar Variability as an Input to the Earth's Environment 535 429-432

    Vrsnak, B., D. Ruzdajak, D. Sudar, and N. Gopalswamy. 2003. "Dynamics of coronal mass ejections in the near-Sun interplanetary space." Solar Variability as an Input to the Earth's Environment 535 517-520

    Ane, I., I. Ane, N. Gopalswamy, P. Manoharan, and S. Yashiro. 2003. "Comment on 'Coronal mass ejections; interplanetary ejecta and geomagnetic storms'." Geophysical Research Letters 30 2232 [10.1029/2003GL017562]

    Burlaga, L., D. Berdichevsky, N. Gopalswamy, R. Lepping, and T. Zurbuchen. 2003. "Merged interaction regions at 1 AU." Journal of Geophysical Research (Space Physics) 108 1425 [10.1029/2003JA010088]

    Yashiro, S., N. Gopalswamy, G. Michalek, and R. Howard. 2003. "Properties of narrow coronal mass ejections observed with LASCO." Advances in Space Research 32 2631-2635 [ 10.1016/j.asr.2003.03.018]

    Gopalswamy, N., S. Yashiro, M. Kaiser, and R. Howard. 2003. "Coronal mass ejection interaction and particle acceleration during the 2001 April 14 15 events." Advances in Space Research 32 2613-2618 [ 10.1016/j.asr.2003.09.038]

    Gopalswamy, N. 2003. "Coronal mass ejections: Initiation and detection." Advances in Space Research 31 869-881 [ 10.1016/S0273-1177(02)00888-8]

    Michałek, G., N. Gopalswamy, and S. Yashiro. 2003. "A New Method for Estimating Widths, Velocities, and Source Location of Halo Coronal Mass Ejections." The Astrophysical Journal 584 472-478 [ 10.1086/345526]

    GonzáLez-Esparza, J., A. Lara, E. eacute;Rez-Tijerina, A. aacute;N, and N. Gopalswamy. 2003. "A numerical study on the acceleration and transit time of coronal mass ejections in the interplanetary medium." Journal of Geophysical Research (Space Physics) 108 1039 [10.1029/2001JA009186]

    Gopalswamy, N., S. Yashiro, A. Lara, et al. M. Kaiser, B. Thompson, P. Gallagher, and R. Howard. 2003. "Large solar energetic particle events of cycle 23: A global view." Geophysical Research Letters 30 (12): 8015 [10.1029/2002GL016435]

    Gopalswamy, N. 2003. "Solar and geospace connections of energetic particle events." Geophysical Research Letters 30 8013 [10.1029/2003GL017277]

    Gopalswamy, N., M. Shimojo, W. Lu, et al. S. Yashiro, K. Shibasaki, and R. Howard. 2003. "Prominence Eruptions and Coronal Mass Ejection: A Statistical Study Using Microwave Observations." The Astrophysical Journal 586 562-578 [ 10.1086/367614]

    Gopalswamy, N., A. Lara, S. Yashiro, and R. Howard. 2003. "Coronal Mass Ejections and Solar Polarity Reversal." The Astrophysical Journal 598 L63-L66 [ 10.1086/380430]

    Lara, A., N. Gopalswamy, S. M. Nunes, G. Munoz, and S. Yashiro. 2003. "A statistical study of CMEs associated with metric type II bursts." Geophysical Research Letters 11532

    Gopalswamy, N., S. Yashiro, O. StCyr, et al. G. Lawrence, M. L. Kaiser, J. B. Gurman, and R. A. Howard. 2002. "Solar, Interplanetary, and Geospace Disturbances Associated with the April 2002 Coronal Mass Ejections." AGU Fall Meeting Abstracts A2-

    Gopalswamy, N., S. M. Nunes, S. Yashiro, and R. A. Howard. 2002. "Variability of solar eruptions during cycle 23." 34th COSPAR Scientific Assembly 34

    Gopalswamy, N., M. Shimojo, W. Lu, et al. S. Yashiro, K. Shibasaki, and R. A. Howard. 2002. "Origin of coronal streamer distention." 34th COSPAR Scientific Assembly 34

    Gopalswamy, N., A. Lara, P. K. Manoharan, and R. A. Howard. 2002. "An empirical model to predict the 1-AU arrival of interplanetary shocks." 34th COSPAR Scientific Assembly 34

    Gopalswamy, N., S. Yashiro, M. L. Kaiser, D. Reames, and R. A. Howard. 2002. "Colliding coronal mass ejections and particle acceleration." 34th COSPAR Scientific Assembly 34

    Manoharan, P. K., N. Gopalswamy, S. Yashiro, and R. A. Howard. 2002. "Propagation of coronal mass ejections from Sun to 1 AU." 34th COSPAR Scientific Assembly 34

    Thompson, B. J., D. Biesecker, and N. Gopalswamy. 2002. "Phenomena Associated with EIT Waves." 34th COSPAR Scientific Assembly 34

    Yashiro, S., N. Gopalswamy, and R. A. Howard. 2002. "Properties of Narrow Coronal Mass Ejections Observed with LASCO." 34th COSPAR Scientific Assembly 34

    Gopalswamy, N. 2002. "Space Weather Study Using Combined Coronagraphic and in Situ Observations." Space Weather Study Using Multipoint Techniques 39

    Gopalswamy, N., S. Yashiro, G. J. Michalek, et al. M. L. Kaiser, R. A. Howard, and J. Bougeret. 2002. "Statistical Properties of Radio-Rich Coronal Mass Ejections." Solar-Terrestrial Magnetic Activity and Space Environment 169

    Gopalswamy, N. 2002. "Relation Between Coronal Mass Ejections and their Interplanetary Counterparts." Solar-Terrestrial Magnetic Activity and Space Environment 157-

    Wu, S., A. Wang, and N. Gopalswamy. 2002. "MHD modelling of CME and CME interactions in a bi-modal solar wind: a preliminary analysis of the 20 January 2001 two CMEs interaction event." SOLMAG 2002 Proceedings of the Magnetic Coupling of the Solar Atmosphere Euroconference 505 227-230

    Michalek, G. J., N. Gopalswamy, and S. Yashiro. 2002. "A new possibility to estimate the width, source location and velocity of halo CMEs." From Solar Min to Max: Half a Solar Cycle with SOHO 508 453-456

    Michalek, G. J., N. Gopalswamy, M. J. Reiner, et al. S. Yashiro, M. L. Kaiser, and R. A. Howard. 2002. "Estimation of projection effect of CMEs from the onset time of shock-associated type III radio burst." From Solar Min to Max: Half a Solar Cycle with SOHO 508 449-452

    Gopalswamy, N. 2002. "CMEs: observations of all kinds." Observational Challenges for the Next Decade of Solar Magnetohydrodynamics

    Michalek, G. J., N. Gopalswamy, and E. Chane. 2002. "Arrival time of coronal mass ejections." Solar Variability: From Core to Outer Frontiers 506 177-180

    Gopalswamy, N., S. Yashiro, M. Kaiser, R. Howard, and J. Bougeret. 2002. "Interplanetary radio emission due to interaction between two coronal mass ejections." Geophysical Research Letters 29 1265 [10.1029/2001GL013606]

    Vršnak, B., and N. Gopalswamy. 2002. "Influence of the aerodynamic drag on the motion of interplanetary ejecta." Journal of Geophysical Research (Space Physics) 107 1019 [10.1029/2001JA000120]

    Gopalswamy, N., and M. Kaiser. 2002. "Solar eruptions and long wavelength radio bursts: The 1997 May 12 event."