Publications of Rajkumar Hajra

A list of publications authored or co-authored by Rajkumar Hajra, derived from the SAO/NASA Astrophysics Data System (ADS). The number in brackets after each title indicates the number of citations that the paper has received.

Orcid ID: 0000-0003-0447-1531

List of publications ordered by citations
Number of papers: 98 (refereed: 96)
No. of citations: 1864
First author papers: 41 (refereed: 40)

2025

  1. Magnetic decrease rates and their relationship with solar wind parameters of high-heliographic latitude high-speed streams during solar minima: Ulysses observations [0]
    Echer, E., Franco, A. M. S., da Costa, E., Hajra, R. & Bolzan, M. J. A., Advances in Space Research, 75, 6500
  2. Norad Tracking Of The 2022 February Starlink Satellites And The Immediate Loss Of 32 Satellites [0]
    Guarnieri, Fernando L., Tsurutani, Bruce T., Hajra, Rajkumar, Echer, Ezequiel & Lakhina, Gurbax S., Nonlinear Processes in Geophysics, 32, 75
  3. Three-dimensional Global Hybrid Simulation of Magnetosheath Jets at Mercury [0]
    Guo, Jin, Lu, San, Lu, Quanming, Ren, Junyi, Ma, Jiuqi, Slavin, James A., Sun, Weijie, Zhong, Jun, Gao, Xinliang, Hajra, Rajkumar & Wang, Rongsheng, ApJ, 978, L9
  4. Supersubstorms during the May 2024 superstorm [0]
    Hajra, Rajkumar, Tsurutani, Bruce T., Lu, Quanming, Du, Aimin & Lakhina, Gurbax S., Journal of Space Weather and Space Climate, 15, 51
  5. Solar Cycle and Seasonal Dependences of Field-Aligned Currents [2]
    Hajra, Rajkumar, Tsurutani, Bruce T., Lu, Quanming, Du, Aimin, Lu, San & Echer, Ezequiel, Space Weather, 23, e2025SW004441
  6. Field-Aligned Currents During High-Intensity Long-Duration Continuous Auroral Electrojet Activity Events: Seasonal Dependences [0]
    Hajra, Rajkumar, Tsurutani, Bruce T., Lu, Quanming & Du, Aimin, Space Weather, 23, e2025SW004354
  7. Field-Aligned Currents During High-Intensity Long-Duration Continuous Auroral Electrojet Activity Events: A Statistical Study [0]
    Hajra, Rajkumar, Tsurutani, Bruce T., Lu, Quanming, Du, Aimin, Lu, San & Gao, Xinliang, Space Weather, 23, e2025SW004353
  8. Electromagnetic Pulsations [0]
    Lakhina, Gurbax S., Tsurutani, Bruce T. & Hajra, Rajkumar, Journal of the Geological Society of India, 101, 896
  9. Dawn-Dusk Morphology of Auroral Arcs in Substorm Growth Phase [1]
    Liu, Zepeng, Lu, San, Nishimura, Y., Lu, Quanming, Wang, Boyi, Ma, Yuzhang, Zhang, Zhibo, Wang, Rongsheng, Hajra, Rajkumar, Apatenkov, S., Grigorenko, E., Artemyev, A. V. & Angelopoulos, V., Journal of Geophysical Research (Space Physics), 130, e2025JA033860
  10. Three-Dimensional Global Hybrid Simulations of Plasma Transport and Energy Conversion During Solar Wind-Magnetosphere Interactions [4]
    Lu, San, Guo, Jin, Lu, Quanming, Shu, Yukang, Ren, Junyi, Wang, Rongsheng & Hajra, Rajkumar, Geophysical Research Letters, 52, e2025GL117084
  11. The Shock-Substorm of 24 September 1998: A Different Type of Substorm Trigger Onset [2]
    Tsurutani, Bruce T., Hajra, Rajkumar, Ebihara, Yusuke, Lakhina, Gurbax S., Narita, Yasuhito & Glassmeier, Karl-Heinz, Geophysical Research Letters, 52, e2025GL115509
  12. Response of Electric Field Pulse and Particle Dynamics in Earth's Magnetosphere to Enhanced Solar Wind Dynamic Pressure With Varied IMF Directions: A Statistical Study [0]
    Zhou, Xuan, Gao, Xinliang, Lu, Quanming, Hajra, Rajkumar & Ma, Jiuqi, Journal of Geophysical Research (Space Physics), 130, e2024JA033701

2024

  1. Geomagnetically induced currents (GICs) during strong geomagnetic activity (storms, substorms, and magnetic pulsations) on 23–24 April 2023 [9]
    Despirak, Irina, Setsko, Pavel, Lubchich, Andris, Hajra, Rajkumar, Sakharov, Yaroslav, Lakhina, Gurbax, Selivanov, Vasiliy & Tsurutani, Bruce Tsatnam, Journal of Atmospheric and Solar-Terrestrial Physics, 261, 106293
  2. Ultra-relativistic Electron Acceleration during High-intensity Long-duration Continuous Auroral Electrojet Activity Events [6]
    Hajra, Rajkumar, Tsurutani, Bruce T., Lu, Quanming, Lakhina, Gurbax S., Du, Aimin, Echer, Ezequiel, Franco, Adriane M. S., Bolzan, Mauricio J. A. & Gao, Xinliang, ApJ, 965, 146
  3. Interplanetary Causes and Impacts of the 2024 May Superstorm on the Geosphere: An Overview [38]
    Hajra, Rajkumar, Tsurutani, Bruce Tsatnam, Lakhina, Gurbax Singh, Lu, Quanming & Du, Aimin, ApJ, 974, 264
  4. The April 2023 SYM-H = −233 nT Geomagnetic Storm: A Classical Event [17]
    Hajra, Rajkumar, Tsurutani, Bruce Tsatnam, Lu, Quanming, Horne, Richard B., Lakhina, Gurbax Singh, Yang, Xu, Henri, Pierre, Du, Aimin, Gao, Xingliang, Wang, Rongsheng & Lu, San, Journal of Geophysical Research (Space Physics), 129, e2024JA032986
  5. The Comet Interceptor Mission [55]
    Jones, Geraint H., Snodgrass, Colin, Tubiana, Cecilia, Küppers, Michael, Kawakita, Hideyo, Lara, Luisa M., Agarwal, Jessica, André, Nicolas, Attree, Nicholas, Auster, Uli, Bagnulo, Stefano, Bannister, Michele, Beth, Arnaud, Bowles, Neil, Coates, Andrew, Colangeli, Luigi, Corral van Damme, Carlos, Da Deppo, Vania, De Keyser, Johan, Della Corte, Vincenzo, Edberg, Niklas, El-Maarry, Mohamed Ramy, Faggi, Sara, Fulle, Marco, Funase, Ryu, Galand, Marina, Goetz, Charlotte, Groussin, Olivier, Guilbert-Lepoutre, Aurélie, Henri, Pierre, Kasahara, Satoshi, Kereszturi, Akos, Kidger, Mark, Knight, Matthew, Kokotanekova, Rosita, Kolmasova, Ivana, Kossacki, Konrad, Kührt, Ekkehard, Kwon, Yuna, La Forgia, Fiorangela, Levasseur-Regourd, Anny-Chantal, Lippi, Manuela, Longobardo, Andrea, Marschall, Raphael, Morawski, Marek, Muñoz, Olga, Näsilä, Antti, Nilsson, Hans, Opitom, Cyrielle, Pajusalu, Mihkel, Pommerol, Antoine, Prech, Lubomir, Rando, Nicola, Ratti, Francesco, Rothkaehl, Hanna, Rotundi, Alessandra, Rubin, Martin, Sakatani, Naoya, Sánchez, Joan Pau, Simon Wedlund, Cyril, Stankov, Anamarija, Thomas, Nicolas, Toth, Imre, Villanueva, Geronimo, Vincent, Jean-Baptiste, Volwerk, Martin, Wurz, Peter, Wielders, Arno, Yoshioka, Kazuo, Aleksiejuk, Konrad, Alvarez, Fernando, Amoros, Carine, Aslam, Shahid, Atamaniuk, Barbara, Baran, Jedrzej, Barciński, Tomasz, Beck, Thomas, Behnke, Thomas, Berglund, Martin, Bertini, Ivano, Bieda, Marcin, Binczyk, Piotr, Busch, Martin-Diego, Cacovean, Andrei, Capria, Maria Teresa, Carr, Chris, Castro Marín, José María, Ceriotti, Matteo, Chioetto, Paolo, Chuchra-Konrad, Agata, Cocola, Lorenzo, Colin, Fabrice, Crews, Chiaki, Cripps, Victoria, Cupido, Emanuele, Dassatti, Alberto, Davidsson, Björn J. R., De Roche, Thierry, Deca, Jan, Del Togno, Simone, Dhooghe, Frederik, Donaldson Hanna, Kerri, Eriksson, Anders, Fedorov, Andrey, Fernández-Valenzuela, Estela, Ferretti, Stefano, Floriot, Johan, Frassetto, Fabio, Fredriksson, Jesper, Garnier, Philippe, Gaweł, Dorota, Génot, Vincent, Gerber, Thomas, Glassmeier, Karl-Heinz, Granvik, Mikael, Grison, Benjamin, Gunell, Herbert, Hachemi, Tedjani, Hagen, Christian, Hajra, Rajkumar, Harada, Yuki, Hasiba, Johann, Haslebacher, Nico, Herranz De La Revilla, Miguel Luis, Hestroffer, Daniel, Hewagama, Tilak, Holt, Carrie, Hviid, Stubbe, Iakubivskyi, Iaroslav, Inno, Laura, Irwin, Patrick, Ivanovski, Stavro, Jansky, Jiri, Jernej, Irmgard, Jeszenszky, Harald, Jimenéz, Jaime, Jorda, Laurent, Kama, Mihkel, Kameda, Shingo, Kelley, Michael S. P., Klepacki, Kamil, Kohout, Tomáš, Kojima, Hirotsugu, Kowalski, Tomasz, Kuwabara, Masaki, Ladno, Michal, Laky, Gunter, Lammer, Helmut, Lan, Radek, Lavraud, Benoit, Lazzarin, Monica, Le Duff, Olivier, Lee, Qiu-Mei, Lesniak, Cezary, Lewis, Zoe, Lin, Zhong-Yi, Lister, Tim, Lowry, Stephen, Magnes, Werner, Markkanen, Johannes, Martinez Navajas, Ignacio, Martins, Zita, Matsuoka, Ayako, Matyjasiak, Barbara, Mazelle, Christian, Mazzotta Epifani, Elena, Meier, Mirko, Michaelis, Harald, Micheli, Marco, Migliorini, Alessandra, Millet, Aude-Lyse, Moreno, Fernando, Mottola, Stefano, Moutounaick, Bruno, Muinonen, Karri, Müller, Daniel R., Murakami, Go, Murata, Naofumi, Myszka, Kamil, Nakajima, Shintaro, Nemeth, Zoltan, Nikolajev, Artiom, Nordera, Simone, Ohlsson, Dan, Olesk, Aire, Ottacher, Harald, Ozaki, Naoya, Oziol, Christophe, Patel, Manish, Savio Paul, Aditya, Penttilä, Antti, Pernechele, Claudio, Peterson, Joakim, Petraglio, Enrico, Piccirillo, Alice Maria, Plaschke, Ferdinand, Polak, Szymon, Postberg, Frank, Proosa, Herman, Protopapa, Silvia, Puccio, Walter, Ranvier, Sylvain, Raymond, Sean, Richter, Ingo, Rieder, Martin, Rigamonti, Roberto, Ruiz Rodriguez, Irene, Santolik, Ondrej, Sasaki, Takahiro, Schrödter, Rolf, Shirley, Katherine, Slavinskis, Andris, Sodor, Balint, Soucek, Jan, Stephenson, Peter, Stöckli, Linus, Szewczyk, Paweł, Troznai, Gabor, Uhlir, Ludek, Usami, Naoto, Valavanoglou, Aris, Vaverka, Jakub, Wang, Wei, Wang, Xiao-Dong, Wattieaux, Gaëtan, Wieser, Martin, Wolf, Sebastian, Yano, Hajime, Yoshikawa, Ichiro, Zakharov, Vladimir, Zawistowski, Tomasz, Zuppella, Paola, Rinaldi, Giovanna & Ji, Hantao, Space Science Reviews, 220, 9
  6. Predicting Interplanetary Shock Occurrence for Solar Cycle 25: Opportunities and Challenges in Space Weather Research [4]
    Oliveira, Denny M., Allen, Robert C., Alves, Livia R., Blake, Séan P., Carter, Brett A., Chakrabarty, Dibyendu, D'Angelo, Giulia, Delano, Kevin, Echer, Ezequiel, Ferradas, Cristian P., Finley, Matt G., Gallardo-Lacourt, Bea, Gershman, Dan, Gjerloev, Jesper W., Habarulema, John Bosco, Hartinger, Michael D., Hajra, Rajkumar, Hayakawa, Hisashi, Juusola, Liisa, Laundal, Karl M., Leamon, Robert J., Madelaire, Michael, Martínez-Ledesma, Miguel, McIntosh, Scott M., Miyoshi, Yoshizumi, Moldwin, Mark B., Nahayo, Emmanuel, Nandy, Dibyendu, Nilam, Bhosale, Nykyri, Katariina, Paterson, William R., Piersanti, Mirko, Pietropaolo, Ermanno, Rodger, Craig J., Shah, Trunali, Smith, Andy W., Srivastava, Nandita, Tsurutani, Bruce T., Ram, S. Tulasi, Upton, Lisa A., Veenadhari, Bhaskara, Vidal-Luengo, Sergio, Viljanen, Ari, Vines, Sarah K., Yadav, Vipin K., Yee, Jeng-Hwa, Weygand, James W. & Zesta, Eftyhia, Space Weather, 22, e2024SW003964
  7. Review of the August 1972 and March 1989 (Allen) Space Weather Events: Can We Learn Anything New From Them? [13]
    Tsurutani, Bruce T., Sen, Abhijit, Hajra, Rajkumar, Lakhina, Gurbax S., Horne, Richard B. & Hada, Tohru, Journal of Geophysical Research (Space Physics), 129, e2024JA032622
  8. Revisiting the Superstorm on 6–7 April 2000 Caused by an Extraordinary Corotating Interaction Region (With an Embedded Coronal Jet?) [1]
    Tsurutani, Bruce T., Hajra, Rajkumar, Lakhina, Gurbax & Meng, Xing, Journal of Geophysical Research (Space Physics), 129, 2024JA032989
  9. Geoelectric fields and geomagnetically induced currents during the April 23–24, 2023 geomagnetic storm [3]
    Wawrzaszek, Anna, Hajra, Rajkumar, Gil, Agnieszka, Modzelewska, Renata, Tsurutani, Bruce Tsatnam & Wawrzaszek, Roman, Scientific Reports, 14, 25074
  10. Prompt Disappearance of Magnetospheric Chorus Waves Caused by High-Speed Magnetosheath Jets [1]
    Zhou, Xuan, Gao, Xinliang, Lu, Quanming, Hajra, Rajkumar, Ke, Yangguang, Chen, Rui & Ma, Jiuqi, Journal of Geophysical Research (Space Physics), 129, e2024JA032576

2023

  1. Geomagnetic Activity Following Interplanetary Shocks in Solar Cycles 23 and 24 [4]
    Echer, Ezequiel, Lucas, Aline de, Hajra, Rajkumar, Franco, Adriane Marques de Souza, Bolzan, Mauricio J. A. & Nascimento, Luis Eduardo Sales do, Brazilian Journal of Physics, 53, 79
  2. Study of Neptune dayside magnetosheath fluctuations during Voyager-2 flyby [0]
    Echer, Ezequiel, de Souza Franco, Adriane Marques, Magalhães, Fabíola Pinho, Bolzan, Mauricio J. A. & Hajra, Rajkumar, Advances in Space Research, 71, 3468
  3. Three-Dimensional Global Hybrid Simulations of Mercury's Disappearing Dayside Magnetosphere [9]
    Guo, Jin, Lu, San, Lu, Quanming, Slavin, James A., Sun, Weijie, Ren, Junyi, Wang, Xueyi, Lin, Yu, Hajra, Rajkumar & Wang, Rongsheng, Journal of Geophysical Research (Planets), 128, e2023JE008032
  4. Near-Earth High-Speed and Slow Solar Winds: A Statistical Study on Their Characteristics and Geomagnetic Impacts [5]
    Hajra, Rajkumar, Solar Physics, 298, 53
  5. Extreme Rarefaction of Solar Wind: A Study on Origin and Characteristics Using Ulysses Observations [1]
    Hajra, Rajkumar, Tsurutani, Bruce T., Lu, Quanming, Shan, Lican, Du, Aimin, Wang, Rongsheng, Lu, San & Gao, Xinliang, ApJ, 955, 120
  6. Interplanetary Shocks between 0.3 and 1.0 au: Helios 1 and 2 Observations [10]
    Hajra, Rajkumar, Tsurutani, Bruce T., Lakhina, Gurbax S., Lu, Quanming, Du, Aimin & Shan, Lican, ApJ, 951, 75
  7. Earth's magnetotail variability during supersubstorms (SSSs): A study on solar wind-magnetosphere-ionosphere coupling [6]
    Hajra, Rajkumar, Echer, Ezequiel, Franco, Adriane Marques de Souza & Bolzan, Mauricio José Alves, Advances in Space Research, 72, 1208
  8. A comparative study on geoeffective and non-geoeffective corotating interaction regions [5]
    Sunny, Jibin V., Nair, Archana Giri, Babu, Megha & Hajra, Rajkumar, Advances in Space Research, 71, 268
  9. Energetics of Shock-triggered Supersubstorms (SML < -2500 nT) [23]
    Tsurutani, Bruce T. & Hajra, Rajkumar, ApJ, 946, 17
  10. Space Plasma Physics: A Review [47]
    Tsurutani, Bruce T., Zank, Gary P., Sterken, Veerle J., Shibata, Kazunari, Nagai, Tsugunobu, Mannucci, Anthony J., Malaspina, David M., Lakhina, Gurbax S., Kanekal, Shrikanth G., Hosokawa, Keisuke, Horne, Richard B., Hajra, Rajkumar, Glassmeier, Karl-Heinz, Gaunt, C. Trevor, Chen, Peng-Fei & Akasofu, Syun-Ichi, IEEE Transactions on Plasma Science, 51, 1595
  11. Comments on "New Insights From the 2003 Halloween Storm Into the Colaba 1600 nT Magnetic Depression During the 1859 Carrington Storm" by S. Ohtani (2022) [6]
    Tsurutani, Bruce T., Lakhina, Gurbax S. & Hajra, Rajkumar, Journal of Geophysical Research (Space Physics), 128, e2022JA031034

2022

  1. Identification of the planetary magnetosphere boundaries with the wavelet multi-resolution analysis [2]
    Bolzan, Mauricio José Alves, Echer, Ezequiel, de Souza Franco, Adriane Marques & Hajra, Rajkumar, Journal of Atmospheric and Solar-Terrestrial Physics, 230, 105842
  2. The Structure and Microstructure of Rising-Tone Chorus With Frequencies Crossing at f ∼ 0.5 fce [9]
    Chen, Rui, Tsurutani, Bruce T., Gao, Xinliang, Lu, Quanming, Chen, Huayue, Lakhina, Gurbax S. & Hajra, Rajkumar, Journal of Geophysical Research (Space Physics), 127, e30438
  3. Solar-Wind High-Speed Stream (HSS) Alfvén Wave Fluctuations at High Heliospheric Latitudes: Ulysses Observations During Two Solar-Cycle Minima [4]
    Echer, Ezequiel, Franco, Adriane Marques de Souza, da Costa Junior, Edio, Hajra, Rajkumar & Bolzan, Mauricio José Alves, Solar Physics, 297, 143
  4. Cometary plasma science [6]
    Goetz, C., Gunell, H., Volwerk, M., Beth, A., Eriksson, A., Galand, M., Henri, P., Nilsson, H., Wedlund, C. Simon, Alho, M., Andersson, L., Andre, N., De Keyser, J., Deca, J., Ge, Y., Glassmeier, K.-H., Hajra, R., Karlsson, T., Kasahara, S., Kolmasova, I., LLera, K., Madanian, H., Mann, I., Mazelle, C., Odelstad, E., Plaschke, F., Rubin, M., Sanchez-Cano, B., Snodgrass, C. & Vigren, E., Experimental Astronomy, 54, 1129
  5. Near-Earth Sub-Alfvénic Solar Winds: Interplanetary Origins and Geomagnetic Impacts [22]
    Hajra, Rajkumar & Tsurutani, Bruce T., ApJ, 926, 135
  6. Interplanetary Sheaths and Corotating Interaction Regions: A Comparative Statistical Study on Their Characteristics and Geoeffectiveness [10]
    Hajra, Rajkumar, Sunny, Jibin V., Babu, Megha & Nair, Archana Giri, Solar Physics, 297, 97
  7. Corotating Interaction Regions during Solar Cycle 24: A Study on Characteristics and Geoeffectiveness [28]
    Hajra, Rajkumar & Sunny, Jibin V., Solar Physics, 297, 30
  8. Intense Geomagnetically Induced Currents (GICs): Association with Solar and Geomagnetic Activities [10]
    Hajra, Rajkumar, Solar Physics, 297, 14
  9. Intense, Long-Duration Geomagnetically Induced Currents (GICs) Caused by Intense Substorm Clusters [13]
    Hajra, Rajkumar, Space Weather, 20, e2021SW002937
  10. Extremely Slow (V sw < 300 km s-1) Solar Winds (ESSWs) at 1 au: Causes of Extreme Geomagnetic Quiet at Earth [2]
    Tsurutani, Bruce T. & Hajra, Rajkumar, ApJ, 936, 155

2021

  1. Seasonal dependence of the Earth's radiation belt ─ new insights [6]
    Hajra, Rajkumar, Annales Geophysicae, 39, 181
  2. Weakest Solar Cycle of the Space Age: A Study on Solar Wind-Magnetosphere Energy Coupling and Geomagnetic Activity [27]
    Hajra, Rajkumar, Solar Physics, 296, 33
  3. Long Term Variations of the Geomagnetic Activity: A Comparison Between the Strong and Weak Solar Activity Cycles and Implications for the Space Climate [24]
    Hajra, Rajkumar, Marques de Souza Franco, Adriane, Echer, Ezequiel & José Alves Bolzan, Mauricio, Journal of Geophysical Research (Space Physics), 126, e28695
  4. Variation of the Interplanetary Shocks in the Inner Heliosphere [13]
    Hajra, Rajkumar, ApJ, 917, 91
  5. September 2017 Space-Weather Events: A Study on Magnetic Reconnection and Geoeffectiveness [9]
    Hajra, Rajkumar, Solar Physics, 296, 50
  6. Seasonal features of geomagnetic activity: a study on the solar activity dependence [17]
    Marques de Souza Franco, Adriane, Hajra, Rajkumar, Echer, Ezequiel & José Alves Bolzan, Mauricio, Annales Geophysicae, 39, 929
  7. The Interplanetary and Magnetospheric causes of Geomagnetically Induced Currents (GICs) > 10 A in the Mäntsälä Finland Pipeline: 1999 through 2019 - Erratum [1]
    Tsurutani, Bruce T. & Hajra, Rajkumar, Journal of Space Weather and Space Climate, 11, 32
  8. The Interplanetary and Magnetospheric causes of Geomagnetically Induced Currents (GICs) > 10 A in the Mäntsälä Finland Pipeline: 1999 through 2019 [45]
    Tsurutani, Bruce T. & Hajra, Rajkumar, Journal of Space Weather and Space Climate, 11, 23

2020

  1. The Complex Space Weather Events of 2017 September [44]
    Hajra, Rajkumar, Tsurutani, Bruce T. & Lakhina, Gurbax S., ApJ, 899, 3
  2. Ionospheric total electron content of comet 67P/Churyumov-Gerasimenko [3]
    Hajra, Rajkumar, Henri, Pierre, Vallières, Xavier, Galand, Marina, Rubin, Martin, Tsurutani, Bruce T., Gilet, Nicolas, Bucciantini, Luca & Nemeth, Zoltan, A&A, 635, A51
  3. Plasma distribution around Comet 67P in the last month of the Rosetta mission [3]
    Nemeth, Z., Timar, A., Szego, K., Henri, P., Hajra, R. & Wattieaux, G., Icarus, 350, 113924
  4. The physics of space weather/solar-terrestrial physics (STP): what we know now and what the current and future challenges are [70]
    Tsurutani, Bruce T., Lakhina, Gurbax S. & Hajra, Rajkumar, Nonlinear Processes in Geophysics, 27, 75
  5. Lower-Band "Monochromatic" Chorus Riser Subelement/Wave Packet Observations [30]
    Tsurutani, Bruce T., Chen, Rui, Gao, Xinliang, Lu, Quanming, Pickett, Jolene S., Lakhina, Gurbax S., Sen, Abhijit, Hajra, Rajkumar, Park, Sang A. & Falkowski, Barbara J., Journal of Geophysical Research (Space Physics), 125, e28090

2019

  1. Properties of the singing comet waves in the 67P/Churyumov-Gerasimenko plasma environment as observed by the Rosetta mission [15]
    Breuillard, H., Henri, P., Bucciantini, L., Volwerk, M., Karlsson, T., Eriksson, A., Johansson, F., Odelstad, E., Richter, I., Goetz, C., Vallières, X. & Hajra, R., A&A, 630, A39
  2. Solar flares observed by Rosetta at comet 67P/Churyumov-Gerasimenko [5]
    Edberg, N. J. T., Johansson, F. L., Eriksson, A. I., Andrews, D. J., Hajra, R., Henri, P., Simon Wedlund, C., Alho, M. & Thiemann, E., A&A, 630, A49
  3. Low Frequency (f < 200 Hz) Polar Plasmaspheric Hiss: Coherent and Intense [12]
    Tsurutani, Bruce T., Park, Sang A., Falkowski, Barbara J., Bortnik, Jacob, Lakhina, Gurbax S., Sen, Abhijit, Pickett, Jolene S., Hajra, Rajkumar, Parrot, Michell & Henri, Pierre, Journal of Geophysical Research (Space Physics), 124, 10,063
  4. Comment on "First Observation of Mesosphere Response to the Solar Wind High-Speed Streams" by W. Yi et al. [6]
    Tsurutani, Bruce T., Hajra, Rajkumar, Echer, Ezequiel & Lakhina, Gurbax S., Journal of Geophysical Research (Space Physics), 124, 8165

2018

  1. Plasma density structures at comet 67P/Churyumov-Gerasimenko [12]
    Engelhardt, I. A. D., Eriksson, A. I., Stenberg Wieser, G., Goetz, C., Rubin, M., Henri, P., Nilsson, H., Odelstad, E., Hajra, R. & Vallières, X., MNRAS, 477, 1296
  2. A correlation study regarding the AE index and ACE solar wind data for Alfvénic intervals using wavelet decomposition and reconstruction [20]
    Guarnieri, Fernando L., Tsurutani, Bruce T., Vieira, Luis E. A., Hajra, Rajkumar, Echer, Ezequiel, Mannucci, Anthony J. & Gonzalez, Walter D., Nonlinear Processes in Geophysics, 25, 67
  3. Interplanetary Shocks Inducing Magnetospheric Supersubstorms (SML < -2500 nT): Unusual Auroral Morphologies and Energy Flow [44]
    Hajra, Rajkumar & Tsurutani, Bruce T., ApJ, 858, 123
  4. Cometary plasma response to interplanetary corotating interaction regions during 2016 June-September: a quantitative study by the Rosetta Plasma Consortium [29]
    Hajra, Rajkumar, Henri, Pierre, Myllys, Minna, Héritier, Kevin L., Galand, Marina, Simon Wedlund, Cyril, Breuillard, Hugo, Behar, Etienne, Edberg, Niklas J. T., Goetz, Charlotte, Nilsson, Hans, Eriksson, Anders I., Goldstein, Raymond, Tsurutani, Bruce T., Moré, Jerome, Vallières, Xavier & Wattieaux, Gaetan, MNRAS, 480, 4544
  5. Dynamic unmagnetized plasma in the diamagnetic cavity around comet 67P/Churyumov-Gerasimenko [19]
    Hajra, Rajkumar, Henri, Pierre, Vallières, Xavier, Moré, Jerome, Gilet, Nicolas, Wattieaux, Gaetan, Goetz, Charlotte, Richter, Ingo, Tsurutani, Bruce T., Gunell, Herbert, Nilsson, Hans, Eriksson, Anders I., Nemeth, Zoltan, Burch, James L. & Rubin, Martin, MNRAS, 475, 4140
  6. Magnetospheric "Killer" Relativistic Electron Dropouts (REDs) and Repopulation: A Cyclical Process [19]
    Hajra, Rajkumar & Tsurutani, Bruce T., Extreme Events in Geospace. Origins, Predictability, and Consequences (Editors: Buzulukova, Natalia), p.373
  7. Plasma source and loss at comet 67P during the Rosetta mission [51]
    Heritier, K. L., Galand, M., Henri, P., Johansson, F. L., Beth, A., Eriksson, A. I., Vallières, X., Altwegg, K., Burch, J. L., Carr, C., Ducrot, E., Hajra, R. & Rubin, M., A&A, 618, A77
  8. Cross-correlation and cross-wavelet analyses of the solar wind IMF Bz and auroral electrojet index AE coupling during HILDCAAs [24]
    Marques de Souza, Adriane, Echer, Ezequiel, José Alves Bolzan, Mauricio & Hajra, Rajkumar, Annales Geophysicae, 36, 205
  9. Comment on "Modeling Extreme "Carrington-Type" Space Weather Events Using Three-Dimensional Global MHD Simulations" by C. M. Ngwira, A. Pulkkinen, M. M. Kuznetsova, and A. Glocer" [18]
    Tsurutani, Bruce T., Lakhina, Gurbax S., Echer, Ezequiel, Hajra, Rajkumar, Nayak, Chinmaya, Mannucci, Anthony J. & Meng, Xing, Journal of Geophysical Research (Space Physics), 123, 1388
  10. Plasmaspheric Hiss: Coherent and Intense [29]
    Tsurutani, Bruce T., Park, Sang A., Falkowski, Barbara J., Lakhina, Gurbax S., Pickett, Jolene S., Bortnik, Jacob, Hospodarsky, George, Santolik, Ondrej, Parrot, Michel, Henri, Pierre & Hajra, Rajkumar, Journal of Geophysical Research (Space Physics), 123, 10,009

2017

  1. Impact of a cometary outburst on its ionosphere. Rosetta Plasma Consortium observations of the outburst exhibited by comet 67P/Churyumov-Gerasimenko on 19 February 2016 [27]
    Hajra, R., Henri, P., Vallières, X., Galand, M., Héritier, K., Eriksson, A. I., Odelstad, E., Edberg, N. J. T., Burch, J. L., Broiles, T., Goldstein, R., Glassmeier, K. H., Richter, I., Goetz, C., Tsurutani, B. T., Nilsson, H., Altwegg, K. & Rubin, M., A&A, 607, A34
  2. High-speed solar wind stream effects on the topside ionosphere over Arecibo: A case study during solar minimum [14]
    Hajra, Rajkumar, Tsurutani, Bruce T., Brum, Christiano G. M. & Echer, Ezequiel, Geophysical Research Letters, 44, 7607
  3. Diamagnetic region(s): structure of the unmagnetized plasma around Comet 67P/CG [55]
    Henri, P., Vallières, X., Hajra, R., Goetz, C., Richter, I., Glassmeier, K.-H., Galand, M., Rubin, M., Eriksson, A. I., Nemeth, Z., Vigren, E., Beth, A., Burch, J. L., Carr, C., Nilsson, H., Tsurutani, B. & Wattieaux, G., MNRAS, 469, S372
  4. Characterization of high-intensity, long-duration continuous auroral activity (HILDCAA) events using recurrence quantification analysis [16]
    Mendes, Odim, Oliveira Domingues, Margarete, Echer, Ezequiel, Hajra, Rajkumar & Everton Menconi, Varlei, Nonlinear Processes in Geophysics, 24, 407

2016

  1. Comparison of geophysical patterns in the southern hemisphere mid-latitude region [3]
    Da Silva, L. A., Satyamurty, P., Alves, L. R., Souza, V. M., Jauer, P. R., Silveira, M. V. D., Echer, M. S., Hajra, R., Medeiros, C., Marchezi, J. P., Rockenbach, M., Rigozo, N. R., Denardini, C. M., Mendes, O., Dal Lago, A. & Vieira, L. E. A., Advances in Space Research, 58, 2090
  2. An empirical model of ionospheric total electron content (TEC) near the crest of the equatorial ionization anomaly (EIA) [30]
    Hajra, Rajkumar, Chakraborty, Shyamal Kumar, Tsurutani, Bruce T., DasGupta, Ashish, Echer, Ezequiel, Brum, Christiano G. M., Gonzalez, Walter D. & Sobral, José Humberto Andrade, Journal of Space Weather and Space Climate, 6, A29
  3. Supersubstorms (SML < -2500 nT): Magnetic storm and solar cycle dependences [55]
    Hajra, Rajkumar, Tsurutani, Bruce T., Echer, Ezequiel, Gonzalez, Walter D. & Gjerloev, Jesper W., Journal of Geophysical Research (Space Physics), 121, 7805
  4. A study on the main periodicities in interplanetary magnetic field Bz component and geomagnetic AE index during HILDCAA events using wavelet analysis [30]
    Souza, A. M., Echer, E., Bolzan, M. J. A. & Hajra, R., Journal of Atmospheric and Solar-Terrestrial Physics, 149, 81
  5. Heliospheric plasma sheet (HPS) impingement onto the magnetosphere as a cause of relativistic electron dropouts (REDs) via coherent EMIC wave scattering with possible consequences for climate change mechanisms [64]
    Tsurutani, B. T., Hajra, R., Tanimori, T., Takada, A., Bhanu, R., Mannucci, A. J., Lakhina, G. S., Kozyra, J. U., Shiokawa, K., Lee, L. C., Echer, E., Reddy, R. V. & Gonzalez, W. D., Journal of Geophysical Research (Space Physics), 121, 10,130
  6. Estimation of energy budget of ionosphere-thermosphere system during two CIR-HSS events: observations and modeling [15]
    Verkhoglyadova, Olga, Meng, Xing, Mannucci, Anthony J., Tsurutani, Bruce T., Hunt, Linda A., Mlynczak, Martin G., Hajra, Rajkumar & Emery, Barbara A., Journal of Space Weather and Space Climate, 6, A20

2015

  1. Relativistic electron acceleration during HILDCAA events: are precursor CIR magnetic storms important? [30]
    Hajra, Rajkumar, Tsurutani, Bruce T., Echer, Ezequiel, Gonzalez, Walter D., Brum, Christiano Garnett Marques, Vieira, Luis Eduardo Antunes & Santolik, Ondrej, Earth, Planets and Space, 67, 109
  2. Relativistic (e > 0.6, > 2.0, and > 4.0 MeV) Electron Acceleration at Geosynchronous Orbit during High-intensity, Long-duration, Continuous AE Activity (HILDCAA) Events [68]
    Hajra, Rajkumar, Tsurutani, Bruce T., Echer, Ezequiel, Gonzalez, Walter D. & Santolik, Ondrej, ApJ, 799, 39
  3. Medium-Range Thermosphere-Ionosphere Storm Forecasts [17]
    Mannucci, A. J., Verkhoglyadova, O. P., Tsurutani, B. T., Meng, X., Pi, X., Wang, C., Rosen, G., Lynch, E., Sharma, S., Ridley, A., Manchester, W., Van Der Holst, B., Echer, E. & Hajra, R., Space Weather, 13, 125
  4. Electromagnetic cyclotron waves in the dayside subsolar outer magnetosphere generated by enhanced solar wind pressure: EMIC wave coherency [46]
    Remya, B., Tsurutani, B. T., Reddy, R. V., Lakhina, G. S. & Hajra, R., Journal of Geophysical Research (Space Physics), 120, 7536
  5. Extremely intense (SML &leq;-2500 nT) substorms: isolated events that are externally triggered? [84]
    Tsurutani, B. T., Hajra, R., Echer, E. & Gjerloev, J. W., Annales Geophysicae, 33, 519

2014

  1. Solar wind-magnetosphere energy coupling efficiency and partitioning: HILDCAAs and preceding CIR storms during solar cycle 23 [48]
    Hajra, Rajkumar, Echer, Ezequiel, Tsurutani, Bruce T. & Gonzalez, Walter D., Journal of Geophysical Research (Space Physics), 119, 2675
  2. Superposed epoch analyses of HILDCAAs and their interplanetary drivers: Solar cycle and seasonal dependences [31]
    Hajra, Rajkumar, Echer, Ezequiel, Tsurutani, Bruce T. & Gonzalez, Walter D., Journal of Atmospheric and Solar-Terrestrial Physics, 121, 24
  3. Relativistic electron acceleration during high-intensity, long-duration, continuous AE activity (HILDCAA) events: Solar cycle phase dependences [58]
    Hajra, Rajkumar, Tsurutani, Bruce T., Echer, Ezequiel & Gonzalez, Walter D., Geophysical Research Letters, 41, 1876

2013

  1. Solar cycle dependence of High-Intensity Long-Duration Continuous AE Activity (HILDCAA) events, relativistic electron predictors? [101]
    Hajra, R., Echer, E., Tsurutani, B. T. & Gonzalez, W. D., Journal of Geophysical Research (Space Physics), 118, 5626

2012

  1. Ionospheric scintillation near the anomaly crest in relation to the variability of ambient ionization [7]
    Chakraborty, S. K., Hajra, R. & Dasgupta, A., Radio Science, 47, RS2006
  2. Evolution of equatorial irregularities under varying electrodynamical conditions: A multitechnique case study from Indian longitude zone [9]
    Hajra, R., Chakraborty, S. K., Mazumdar, S. & Alex, S., Journal of Geophysical Research (Space Physics), 117, A08331

2011

  1. Equatorial ionospheric responses in relation to the occurrence of main phase of intense geomagnetic storms in the local dusk sector [4]
    Hajra, R. & Chakraborty, S. K., Journal of Atmospheric and Solar-Terrestrial Physics, 73, 760

2010

  1. Variability of total electron content near the crest of the equatorial anomaly during moderate geomagnetic storms [7]
    Chakraborty, S. K. & Hajra, R., Journal of Atmospheric and Solar-Terrestrial Physics, 72, 900
  2. Ionospheric effects near the magnetic equator and the anomaly crest of the Indian longitude zone during a large number of intense geomagnetic storms [4]
    Hajra, R., Chakraborty, S. K. & Dasgupta, A., Journal of Atmospheric and Solar-Terrestrial Physics, 72, 1299

2009

  1. Electrojet control of ambient ionization near the crest of the equatorial anomaly in the Indian zone [26]
    Chakraborty, S. K. & Hajra, R., Annales Geophysicae, 27, 93
  2. Electrodynamical control of the ambient ionization near the equatorial anomaly crest in the Indian zone during counter electrojet days [11]
    Hajra, R., Chakraborty, S. K. & Paul, A., Radio Science, 44, RS3009

2008

  1. Solar control of ambient ionization of the ionosphere near the crest of the equatorial anomaly in the Indian zone [25]
    Chakraborty, S. K. & Hajra, R., Annales Geophysicae, 26, 47

2007

  1. Solar control of ambient ionization of the ionosphere near the crest of the equatorial anomaly in the Indian zone [6]
    Chakraborty, S. K. & Hajra, R., Bulletin of the Astronomical Society of India, 35, 599

Created on Wed Apr 8 04:33:22 2026.