Results 21 to 30 of about 94,994 (332)

3He-rich Solar Energetic Particles from Sunspot Jets [PDF]

Astrophysical Journal, 2018
Solar sources of suprathermal (10 MeV nucleon−1) 3He-rich SEPs remain unexplored. Here we present two of the most intense 3He-rich (3He/4He > 1) SEP events of the current solar cycle 24 measured on the Advanced Composition Explorer at energy >10 MeV ...
R. Bučík, M. Wiedenbeck, G. Mason, R. Gómez-Herrero, N. Nitta, L. Wang   +5 more
semanticscholar   +1 more source

Solar energetic particle variations [PDF]

Advances in Space Research, 2004
The population of energetic particles in the heliosphere changes from solar maximum to solar minimum. The ultimate driver for those variations is the Sun. Solar variability is reflected in the dynamics of the large-scale structure of the heliosphere, the solar output of energetic particles and most definitively in the intensity, energy and composition ...
G. M. Simnett, David Lario
openaire   +4 more sources

Shock Propagation and Associated Particle Acceleration in the Presence of Ambient Solar-Wind Turbulence

Frontiers in Astronomy and Space Sciences, 2021
The topic of this review paper is on the influence of solar wind turbulence on shock propagation and its consequence on the acceleration and transport of energetic particles at shocks.
Fan Guo, Fan Guo, Joe Giacalone, Lulu Zhao   +3 more
doaj   +1 more source

Current status and possible extension of the global neutron monitor network

Journal of Space Weather and Space Climate, 2020
The global neutron monitor network has been successfully used over several decades to study cosmic ray variations and fluxes of energetic solar particles. Nowadays, it is used also for space weather purposes, e.g. alerts and assessment of the exposure to
Mishev Alexander, Usoskin Ilya
doaj   +1 more source

Solar flares and energetic particles [PDF]

Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2012
Solar flares are now observed at all wavelengths from γ -rays to decametre radio waves. They are commonly associated with efficient production of energetic particles at all energies. These particles play a major role in the active Sun because they contain a large amount of the energy released during flares ...
openaire   +4 more sources

Solar energetic particles and galactic cosmic rays over millions of years as inferred from data on cosmogenic 26Al in lunar samples [PDF]

Astronomy & Astrophysics, 2018
Aims. Lunar soil and rocks are not protected by a magnetic field or an atmosphere and are continuously irradiated by energetic particles that can produce cosmogenic radioisotopes directly inside rocks at different depths depending on the particle’s ...
S. Poluianov, G. Kovaltsov, I. Usoskin
semanticscholar   +1 more source

3He-rich Solar Energetic Particles in Helical Jets on the Sun [PDF]

, 2017
Particle acceleration in stellar flares is ubiquitous in the universe; however, our Sun is the only astrophysical object where energetic particles and their source flares can both be observed.
R. Bučík, D. Innes, G. Mason, M. Wiedenbeck, R. Gómez-Herrero, N. Nitta   +5 more
semanticscholar   +1 more source

Comparing Long-duration Gamma-Ray Flares and High-energy Solar Energetic Particles [PDF]

Astrophysical Journal, 2019
Little is known about the origin of the high-energy and sustained emission from solar long-duration gamma-ray flares (LDGRFs) identified with the Compton Gamma Ray Observatory, the Solar Maximum Mission, and now Fermi.
G. A. Nolfo, A. Bruno, J. Ryan, Silvia Dalla, J. Giacalone, I. G. Richardson, I. G. Richardson, E. Christian, S. Stochaj, G. Bazilevskaya, M. Boezio, M. Martucci, V. Mikhailov, R. Munini   +13 more
semanticscholar   +1 more source

New reconstruction of event-integrated spectra (spectral fluences) for major solar energetic particle events [PDF]

Astronomy & Astrophysics, 2021
Aims. Fluences of solar energetic particles (SEPs) are not easy to evaluate, especially for high-energy events (i.e. ground-level enhancements, GLEs). Earlier estimates of event-integrated SEP fluences for GLEs were based on partly outdated assumptions ...
S. Koldobskiy, O. Raukunen, R. Vainio, G. Kovaltsov, I. Usoskin   +4 more
semanticscholar   +1 more source

Review of Solar Energetic Particle Prediction Models

Advances in Space Research, 2023
Peer ...
Whitman, Kathryn, Egeland, Ricky, Richardson, Ian G., Allison, Clayton, Quinn, Philip, Barzilla, Janet, Kitiashvili, Irina, Sadykov, Viacheslav, Bain, Hazel M., Dierckxsens, Mark, Mays, M. Leila, Tadesse, Tilaye, Lee, Kerry T., Semones, Edward, Luhmann, Janet G., Núñez, Marlon, White, Stephen M., Kahler, Stephen W., Ling, Alan G., Smart, Don F., Shea, Margaret A., Tenishev, Valeriy, Boubrahimi, Soukaina F., Aydin, Berkay, Martens, Petrus, Angryk, Rafal, Marsh, Michael S., Dalla, Silvia, Crosby, Norma, Schwadron, Nathan A., Kozarev, Kamen, Gorby, Matthew, Young, Matthew A., Laurenza, Monica, Cliver, Edward W., Alberti, Tommaso, Stumpo, Mirko, Benella, Simone, Papaioannou, Athanasios, Anastasiadis, Anastasios, Sandberg, Ingmar, Georgoulis, Manolis K., Ji, Anli, Kempton, Dustin, Pandey, Chetraj, Li, Gang, Hu, Junxiang, Zank, Gary P., Lavasa, Eleni, Giannopoulos, Giorgos, Falconer, David, Kadadi, Yash, Fernandes, Ian, Dayeh, Maher A., Muñoz-Jaramillo, Andrés, Chatterjee, Subhamoy, Moreland, Kimberly D., Sokolov, Igor V., Roussev, Ilia I., Taktakishvili, Aleksandre, Effenberger, Frederic, Gombosi, Tamas, Huang, Zhenguang, Zhao, Lulu, Wijsen, Nicolas, Aran, Angels, Poedts, Stefaan, Kouloumvakos, Athanasios, Paassilta, Miikka, Vainio, Rami, Belov, Anatoly, Eroshenko, Eugenia A., Abunina, Maria A., Abunin, Artem A., Balch, Christopher C., Malandraki, Olga, Karavolos, Michalis, Heber, Bernd, Labrenz, Johannes, Kühl, Patrick, Kosovichev, Alexander G., Oria, Vincent, Nita, Gelu M., Illarionov, Egor, O’Keefe, Patrick M., Jiang, Yucheng, Fereira, Sheldon H., Ali, Aatiya, Paouris, Evangelos, Aminalragia-Giamini, Sigiava, Jiggens, Piers, Jin, Meng, Lee, Christina O., Palmerio, Erika, Bruno, Alessandro, Kasapis, Spiridon, Wang, Xiantong, Chen, Yang, Sanahuja, Blai, Lario, David, Jacobs, Carla, Strauss, Du Toit, Steyn, Ruhann, van den Berg, Jabus, Swalwell, Bill, Waterfall, Charlotte, Nedal, Mohamed, Miteva, Rositsa, Dechev, Momchil, Zucca, Pietro, Engell, Alec, Maze, Brianna, Farmer, Harold, Kerber, Thuha, Barnett, Ben, Loomis, Jeremy, Grey, Nathan, Thompson, Barbara J., Linker, Jon A., Caplan, Ronald M., Downs, Cooper, Török, Tibor, Lionello, Roberto, Titov, Viacheslav, Zhang, Ming, Hosseinzadeh, Pouya   +125 more
openaire   +4 more sources