Results 71 to 80 of about 237 (168)

Simulation of the 2010 September 9 Solar Energetic Particle Event by Using a Data-constrained Transport Model

The Astrophysical Journal
Solar energetic particles (SEPs) can cause damage to spacecraft systems and affect human activities in space. On 2010 September 9, a gradual SEP event was observed by spacecraft STEREO-A, Solar and Heliospheric Observatory (SOHO), and STEREO-B at widely ...
Xinyi Tao, Fang Shen, Xueshang Feng, Wanyi Lian, Bofeng Tang, Yi Yang   +5 more
doaj   +1 more source

Acceleration of Electrons and Ions by an “Almost” Astrophysical Shock in the Heliosphere

The Astrophysical Journal Letters
Collisionless shock waves, ubiquitous in the Universe, are crucial for particle acceleration in various astrophysical systems. Currently, the heliosphere is the only natural environment available for their in situ study.
Immanuel Christopher Jebaraj, Oleksiy Agapitov, Vladimir Krasnoselskikh, Laura Vuorinen, Michael Gedalin, Kyung-Eun Choi, Erika Palmerio, Nicolas Wijsen, Nina Dresing, Christina Cohen, Athanasios Kouloumvakos, Michael Balikhin, Rami Vainio, Emilia Kilpua, Alexandr Afanasiev, Jaye Verniero, John Grant Mitchell, Domenico Trotta, Matthew Hill, Nour Raouafi, Stuart D. Bale   +20 more
doaj   +1 more source

High-resolution Simulation of Coronal Mass Ejection–Corotating Interaction Region Interactions: Mesoscale Solar Wind Structure Formation Observable by the SWIFT Constellation

The Astrophysical Journal
We present an unprecedented simulation of how two large-scale heliospheric transients—a coronal mass ejection (CME) and a corotating stream interaction region—collide, producing a dramatic increase in the complexity of the CME due to formation of ...
W. B. Manchester IV, Nishtha Sachdeva, Emilia Kilpua, Matti Ala-Lahti, Shirsh Lata Soni, Zhenguang Huang, Hongfan Chen, Aniket Jivani, Bart van der Holst, Adam Szabo, Mojtaba Akhavan-Tafti   +10 more
doaj   +1 more source

Parker Solar Probe Observations of Turbulence and Waves between a Current Sheet and an Interplanetary Coronal Mass Ejection–Driven Shock

The Astrophysical Journal
Abstract We report on unusual magnetic wave activity seen in a region between the crossing of a current sheet and an interplanetary shock by the Parker Solar Probe (PSP). The PSP observed a shock driven by an interplanetary coronal mass ejection on 2021 June 30 at 14:58:19 at 0.76 au.
Juan Zhang, Joe Giacalone, Xiaohang Chen, Lan K. Jian, Kristopher G. Klein   +4 more
openaire   +1 more source

Variability of East–West Asymmetry in Energetic Storm Particle Intensities and Coronal Mass Ejection Deflection during Solar Cycles 23 and 24

The Astrophysical Journal
We investigate the variability of the east–west asymmetry in energetic storm particle (ESP) heavy ion intensities at interplanetary shocks driven by coronal mass ejections (CMEs) during solar cycles (SCs) 23 and 24.
A. Santa Fe Dueñas, R. W. Ebert, Gang Li, Zheyi Ding, M. A. Dayeh, M. I. Desai, L. K. Jian, N. Lugaz, B. Zhuang, N. Al-Haddad   +9 more
doaj   +1 more source

Wave–Particle Interaction in the Upstream of Interplanetary Coronal Mass Ejection Shocks

The Astrophysical Journal
Shocks associated with interplanetary coronal mass ejections are known to energize charged particles and give rise to solar energetic particles. Many of these energetic particles move ahead of the shock to create a foreshock region.
Shanwlee Sow Mondal, Aveek Sarkar, Sofiane Bourouaine   +2 more
doaj   +1 more source

Evidence of Time-dependent Diffusive Shock Acceleration in the 2022 September 5 Solar Energetic Particle Event

The Astrophysical Journal
On 2022 September 5, a large solar energetic particle (SEP) event was detected by Parker Solar Probe (PSP) and Solar Orbiter (SolO) at heliocentric distances of 0.07 and 0.71 au, respectively.
Xiaohang Chen, Lulu Zhao, Joe Giacalone, Nishtha Sachdeva, Igor V. Sokolov, Gábor Tóth, Christina M. S. Cohen, David Lario, Fan Guo, Athanasios Kouloumvakos, Tamas I. Gombosi, Zhenguang Huang, Ward B. Manchester IV, Bart van der Holst, Weihao Liu, David J. McComas, Matthew E. Hill, George C. Ho   +17 more
doaj   +1 more source

Simulation of Solar Energetic Particle Events Originated from Coronal Mass Ejection Shocks with a Data-driven Physics-based Transport Model

The Astrophysical Journal
Abstract Solar energetic particle (SEP) events are associated with coronal mass ejections (CMEs) and/or solar flares. SEPs travel through the corona and interplanetary space to reach Earth, posing a radiation hazard to spacecraft and astronauts working in space and the electronics on spacecraft.
Lei Cheng, Ming Zhang, Ryun Young Kwon, David Lario   +3 more
openaire   +3 more sources

The Major Solar Energetic Particle Event on 2024 May 20: Multispacecraft Observations of a Long-lasting Energetic Particle Reservoir

The Astrophysical Journal
The fleet of spacecraft distributed across the inner heliosphere during 2024 May–June provided a unique opportunity to analyze, over a broad range of heliolongitudes, the effects produced by the complex sunspot group associated with Active Region 13664 ...
D. Lario, J. Hu, L. A. Balmaceda, R. Y. Kwon, S. Wallace, D. E. da Silva, M. L. Mays, V. Krupar, F. Carcaboso, A. Warmuth, M. Z. Stiefel, L. Y. Khoo, I. G. Richardson, P. Kühl, R. F. Wimmer-Schweingruber, R. Vainio, E. Riihonen, W. Liu, A. Aran, E. Paouris, M. R. Kane, C. O. Lee, C. Sasso, C. N. Arge, S. I. Jones, J. Verniero, A. E. Niemela, T. S. Horbury, M. Maksimovic   +28 more
doaj   +1 more source

Study of Plasma Heating Processes in a Coronal Mass Ejection–driven Shock Sheath Region Observed with the Metis Coronagraph

The Astrophysical Journal
On 2021 September 28, a C1.6 class flare occurred in active region NOAA 12871, located approximately at 27°S and 51°W on the solar disk with respect to Earth’s point of view.
Federica Frassati, Alessandro Bemporad, Salvatore Mancuso, Silvio Giordano, Vincenzo Andretta, Aleksandr Burtovoi, Vania Da Deppo, Yara De Leo, Silvano Fineschi, Catia Grimani, Salvo Guglielmino, Petr Heinzel, Giovanna Jerse, Federico Landini, Alessandro Liberatore, Giampiero Naletto, Gianalfredo Nicolini, Maurizio Pancrazzi, Paolo Romano, Marco Romoli, Giuliana Russano, Clementina Sasso, Daniele Spadaro, Marco Stangalini, Roberto Susino, Luca Teriaca, Michela Uslenghi, Luca Zangrilli   +27 more
doaj   +1 more source