Results 111 to 120 of about 426 (204)

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

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

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

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

Two Components in Major Solar Particle Events [PDF]

, 2003
A study has been made of 29 intense, solar particle events observed in the energy range 25-100 MeV/nuc near Earth in the years 1997 through 2001. It is found that the majority of the events (19/29) had Fe to O ratios which were reasonably constant with ...
vonRosenvinge, T. T., White, Nicholas E., Cohen, C. M. S., Mewaldt, R. A., Cane, H. V.   +4 more
core  

Observations of a Solar Energetic Particle Event From Inside and Outside the Coma of Comet 67P. [PDF]

J Geophys Res Space Phys, 2022
Wellbrock A, Jones GH, Dresing N, Coates AJ, Simon Wedlund C, Nilsson H, Sanchez-Cano B, Palmerio E, Turc L, Myllys M, Henri P, Goetz C, Witasse O, Nordheim TA, Mandt K.   +14 more
europepmc   +1 more source

3D Nonequilibrium Ionization and Spectroscopic Modeling of Coronal Mass Ejections. III. Charge State Evolution

The Astrophysical Journal
The ionization state of plasmas leaving the Sun freezes in low in the solar corona and carries information about the inner corona through the heliosphere.
E. M. Wraback, W. B. Manchester IV, E. Landi, J. Szente   +3 more
doaj   +1 more source

Imaging and Radio Signatures of Shock–Plasmoid Interaction

The Astrophysical Journal Letters
Understanding how shocks interact with coronal structures is crucial for understanding the mechanisms of particle acceleration in the solar corona and inner heliosphere.
Pankaj Kumar, Judith T. Karpen, P. K. Manoharan, N. Gopalswamy   +3 more
doaj   +1 more source

Magnetosheath Jet Formation Influenced by Parameters in Solar Wind Structures. [PDF]

J Geophys Res Space Phys, 2023
Koller F, Plaschke F, Temmer M, Preisser L, Roberts OW, Vörös Z.   +5 more
europepmc   +1 more source

Defining the Middle Corona. [PDF]

Sol Phys, 2023
West MJ, Seaton DB, Wexler DB, Raymond JC, Del Zanna G, Rivera YJ, Kobelski AR, Chen B, DeForest C, Golub L, Caspi A, Gilly CR, Kooi JE, Meyer KA, Alterman BL, Alzate N, Andretta V, Auchère F, Banerjee D, Berghmans D, Chamberlin P, Chitta LP, Downs C, Giordano S, Harra L, Higginson A, Howard RA, Kumar P, Mason E, Mason JP, Morton RJ, Nykyri K, Patel R, Rachmeler L, Reardon KP, Reeves KK, Savage S, Thompson BJ, Van Kooten SJ, Viall NM, Vourlidas A, Zhukov AN.   +41 more
europepmc   +1 more source