Results 11 to 20 of about 11,658 (351)

A Perspective on Solar Energetic Particles

Frontiers in Astronomy and Space Sciences, 2022
The author has been fortunate to observe and participate in the rise of the field of solar energetic particles (SEPs), from the early abundance studies, to the contemporary paradigm of shock acceleration in large SEP events, and element abundance ...
Donald V. Reames
doaj   +4 more sources

Space Climate and Solar Energetic Particles [PDF]

Iranian Journal of Astronomy and Astrophysics
In this paper, we investigate the effect of solar corona magnetic activities during 11-year periods and energetic particles on global warming. According to atmospheric changes during the past years, the relationship between these two issues should be ...
Ehsan Tavabi, Sima Zeighami, Yones Kharaghani   +2 more
doaj   +2 more sources

Solar energetic particles and radio burst emission [PDF]

Journal of Space Weather and Space Climate, 2017
We present a statistical study on the observed solar radio burst emission associated with the origin of in situ detected solar energetic particles. Several proton event catalogs in the period 1996–2016 are used.
Miteva Rositsa, Samwel Susan W., Krupar Vratislav   +2 more
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Solar energetic particle drifts in the Parker spiral [PDF]

Journal of Geophysical Research: Space Physics, 2013
Drifts in the Parker spiral interplanetary magnetic field are known to be an important component in the propagation of galactic cosmic rays, while they are thought to be negligible for solar energetic particles (SEPs). As a result, they have so far been ignored in SEP propagation modeling and data analysis.
S. Dalla, M.S. Marsh, J. Kelly, T. Laitinen   +3 more
openalex   +4 more sources

Composition of energetic particles from solar flares

Advances in Space Research, 1994
We present a model for composition of heavy ions in the solar energetic particles (SEP). The SEP composition in a typical large solar particle event reflects the composition of the Sun, with adjustments due to fractionation effects which depend on the ...
Stone, E. C., Garrard, T. L.
core   +4 more sources

The Energetic Particle Detector [PDF]

Astronomy & Astrophysics, 2020
After decades of observations of solar energetic particles from space-based observatories, relevant questions on particle injection, transport, and acceleration remain open. To address these scientific topics, accurate measurements of the particle properties in the inner heliosphere are needed. In this paper we describe the Energetic Particle Detector (
Rodriguez-Pacheco, J, Wimmer-Schweingruber, RF, Mason, GM, Ho, GC, Sanchez-Prieto, S, Prieto, M, Martin, C, Seifert, H, Andrews, GB, Kulkarni, SR, Panitzsch, L, Boden, S, Boettcher, SI, Cernuda, I, Elftmann, R, Espinosa Lara, F, Gomez-Herrero, R, Terasa, C, Almena, J, Begley, S, Boehm, E, Blanco, JJ, Boogaerts, W, Carrasco, A, Castillo, R, Da Silva Farina, A, De Manuel Gonzalez, V, Drews, C, Dupont, AR, Eldrum, S, Gordillo, C, Gutierrez, O, Haggerty, DK, Hayes, JR, Heber, B, Hill, ME, Juengling, M, Kerem, S, Knierim, V, Koehler, J, Kolbe, S, Kulemzin, A, Lario, D, Lees, WJ, Liang, S, Martinez Hellin, A, Meziat, D, Montalvo, A, Nelson, KS, Parra, P, Paspirgilis, R, Ravanbakhsh, A, Richards, M, Rodriguez-Polo, O, Russu, A, Sanchez, I, Schlemm, CE, Schuster, B, Seimetz, L, Steinhagen, J, Tammen, J, Tyagi, K, Varela, T, Yedla, M, Yu, J, Agueda, N, Aran, A, Horbury, TS, Klecker, B, Klein, K-L, Kontar, E, Krucker, S, Maksimovic, M, Malandraki, O, Owen, CJ, Pacheco, D, Sanahuja, B, Vainio, R, Connell, JJ, Dalla, S, Droege, W, Gevin, O, Gopalswamy, N, Kartavykh, YY, Kudela, K, Limousin, O, Makela, P, Mann, G, Onel, H, Posner, A, Ryan, JM, Soucek, J, Hofmeister, S, Vilmer, N, Walsh, AP, Wang, L, Wiedenbeck, ME, Wirth, K, Zong, Q   +98 more
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Solar Energetic Particle “Ground-Level Enhancements” and the Solar Cycle [PDF]

Solar Physics, 2022
Abstract Severe geomagnetic storms appear to be ordered by the solar cycle in a number of ways: They occur more frequently close to solar maximum and declining phase, are more common in larger solar cycles and show different patterns of occurrence in odd-and even-numbered solar cycles.
Mathew J. Owens, Luke A. Barnard, Benjamin J. S. Pope, Mike Lockwood, Ilya Usoskin, Eleanna Asvestari   +5 more
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Acceleration and Propagation of Solar Energetic Particles [PDF]

Space Science Reviews, 2017
Solar Energetic Particles (SEPs) are an important component of Space Weather, including radiation hazard to humans and electronic equipment, and the ionisation of the Earth's atmosphere. We review the key observations of SEPs, our current understanding of their acceleration and transport, and discuss how this knowledge is incorporated within Space ...
Klein, Karl-Ludwig, Dalla, Silvia
openaire   +3 more sources

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 ...
David Lario, George M. Simnett
openaire   +2 more sources

From the Sun’s south to the north pole – Ulysses COSPIN/LET composition measurements at solar maximum [PDF]

Annales Geophysicae, 2003
Based on elemental abundance ratios derived from the Ulysses COSPIN/LET measurements, we classified the energetic particle populations during and after the socalled Fast Latitude Scan – the time period during which the Ulysses spacecraft traveled
M. Y. Hofer, R. G. Marsden, T. R. Sanderson, C. Tranquille   +3 more
doaj   +1 more source