Results 31 to 40 of about 94,994 (332)

Energy Spectrum of Solar Energetic Electron Events over 25 Years

The Astrophysical Journal, 2023
We investigate the peak flux energy spectrum of 458 solar energetic electron (SEE) events with a clear velocity dispersion detected at energies from ≤4.2 to ≥108 keV by Wind/3DP from 1994 December through 2019 December, utilizing a pan-spectrum fitting ...
Wen Wang, Linghua Wang, Säm Krucker, Robert F. Wimmer-Schweingruber   +3 more
doaj   +1 more source

Connecting the Properties of Coronal Shock Waves with Those of Solar Energetic Particles

Astrophysical Journal, 2019
We develop and exploit a new catalog of coronal pressure waves modeled in 3D to study the potential role of these waves in accelerating solar energetic particles (SEPs) measured in situ.
A. Kouloumvakos, A. Rouillard, Yihong Wu, R. Vainio, A. Vourlidas, I. Plotnikov, A. Afanasiev, H. Önel   +7 more
semanticscholar   +1 more source

Abundances, Ionization States, Temperatures, and FIP in Solar Energetic Particles [PDF]

, 2017
The relative abundances of chemical elements and isotopes have been our most effective tool in identifying and understanding the physical processes that control populations of energetic particles.
D. Reames
semanticscholar   +1 more source

Transport of Solar Energetic Particles [PDF]

International Astronomical Union Colloquium, 1994
AbstractNew developments in the understanding of the interplanetary transport of solar cosmic rays are reviewed. Based on carefully analyzed solar particle events observed on the Helios and ISEE 3 spacecraft, the relation of transport parameters to the structure of the interplanetary magnetic field is discussed.
openaire   +3 more sources

The Propitious Role of Solar Energetic Particles in the Origin of Life [PDF]

, 2018
We carry out 3D numerical simulations to assess the penetration and bombardment effects of solar energetic particles (SEPs), i.e., high-energy particle bursts during large flares and superflares, on ancient and current Mars.
M. Lingam, C. Dong, Xiaohua Fang, B. Jakosky, A. Loeb   +4 more
semanticscholar   +1 more source

The source of the major solar energetic particle events from super active region 11944 [PDF]

Science Advances, 2021
Elemental abundance measurements by the Hinode and Wind spacecrafts reveal the source of major solar energetic particle events. Shock waves associated with fast coronal mass ejections (CMEs) accelerate solar energetic particles (SEPs) in the long ...
D. Brooks, S. Yardley
semanticscholar   +1 more source

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
openaire   +5 more sources

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
openaire   +3 more sources

A Living Catalog of Parker Solar Probe IS⊙IS Energetic Particle Enhancements

The Astrophysical Journal Supplement Series, 2023
Energetic charged particles are pervasive throughout the heliosphere with contributions from solar energetic particle events, stream and corotating interaction regions, galactic cosmic rays, anomalous cosmic rays, and suprathermal ions.
J. G. Mitchell, C. M. S. Cohen, T. J. Eddy, C. J. Joyce, J. S. Rankin, M. M. Shen, G. A. de Nolfo, E. R. Christian, D. J. McComas, R. L. McNutt Jr., M. E. Wiedenbeck, N. A. Schwadron, M. E. Hill, A. W. Labrador, R. A. Leske, R. A. Mewaldt, D. G. Mitchell, J. R. Szalay   +17 more
doaj   +1 more source

Perpendicular Diffusion of Solar Energetic Particles: Model Results and Implications for Electrons [PDF]

, 2017
The processes responsible for the effective longitudinal transport of solar energetic particles (SEPs) are still not completely understood. We address this issue by simulating SEP electron propagation using a spatially 2D transport model that includes ...
R. D. Strauss, N. Dresing, N. E. Engelbrecht   +2 more
semanticscholar   +1 more source