Results 1 to 10 of about 77,381 (298)

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
doaj   +2 more sources

Drift-induced deceleration of Solar Energetic Particles [PDF]

, 2015
We investigate the deceleration of Solar Energetic Particles (SEPs) during their propagation from the Sun through interplanetary space, in the presence of weak to strong scattering in a Parker spiral configuration, using relativistic full orbit test ...
Agueda N., Barnden L. R., Dalla S., Dröge W., Kulsrud R. M. ed Galeev A. A., Kóta J., Lario D., le Roux J. A., M. S. Marsh, Marsh M. S., Mason G. M., S. Dalla, T. Laitinen, Wang Y., Zank G. P., Zhang M.   +15 more
core   +4 more sources

Ozone impact from solar energetic particles cools the polar stratosphere. [PDF]

Nat Commun, 2022
Szela G ME, Marsh DR, Verronen PT, Seppälä A, Kalakoski N.   +4 more
europepmc   +3 more sources

Transfer of Entropy between the Magnetic Field and Solar Energetic Particles during an Interplanetary Coronal Mass Ejection

The Astrophysical Journal Letters
The thermodynamics of solar wind bulk plasma have been routinely measured and quantified, unlike those of solar energetic particles (SEPs), whose thermodynamic properties have remained elusive until recently.
M. E. Cuesta, G. Livadiotis, D. J. McComas, L. Y. Khoo, H. A. Farooki, R. Bandyopadhyay, S. D. Bale   +6 more
doaj   +2 more sources

Pitch-angle Distributions of 0.5–1 GeV Solar Protons Crossing Earth’s Orbit: Influence of the Large-scale Turbulent Interplanetary Magnetic Field

The Astrophysical Journal, 2023
Using numerical simulations, we analyze the time evolution of the pitch-angle distribution of 500 MeV and 1 GeV solar protons, released impulsively near the Sun, at 1 au. The numerical model solves the equations of motion of an ensemble of particles that
Ashraf Moradi, Joe Giacalone
doaj   +1 more source

On the Onset Delays of Solar Energetic Electrons and Protons: Evidence for a Common Accelerator

The Astrophysical Journal, 2023
The processes responsible for the acceleration of solar energetic particles (SEPs) are still not well understood, including whether SEP electrons and protons are accelerated by common or separate processes. Using a numerical particle transport model that
R. D. Strauss, N. Dresing, I. G. Richardson, J. P. van den Berg, P. J. Steyn   +4 more
doaj   +1 more source

Energetic Neutral Atoms from Solar Energetic Particles due to Shocks: Inclusion of Upstream Particles

The Astrophysical Journal, 2023
Many aspects of solar energetic particles are not well understood, including their acceleration mechanism. There has been recent interest in the potential of energetic neutral atoms (ENAs) as remote probes of solar energetic particles (SEPs) and their ...
Brent M. Randol, Errol J. Summerlin, Jeewoo Park   +2 more
doaj   +1 more source

Analysis of SEP Events and Their Possible Precursors Based on the GSEP Catalog

The Astrophysical Journal Supplement Series, 2023
Solar energetic particle (SEP) events are one of the most crucial aspects of space weather. Their prediction depends on various factors including the source solar eruptions such as flares and coronal mass ejections (CMEs).
Sumanth Rotti, Petrus C. Martens
doaj   +1 more source

Dispersive Suprathermal Ion Events Observed by the Parker Solar Probe Mission

The Astrophysical Journal Letters, 2023
During Encounter 11, Parker Solar Probe observed a low-energy dispersive ions event of solar origin. The event was observed in the SPAN-I and IS⊙IS EPI-Lo sensors.
S. T. Alnussirat, R. Livi, D. E. Larson, A. Rahmati, P. L. Whittlesey, O. Romeo, S. T. Badman, Milo Buitrago-Casas, Juan Carlos Martínez Oliveros, M. Pulupa, S. D. Bale, J. Huang, J. Verniero, N. Raouafi, Donald Mitchell, D. J. McComas, Matt Hill, Christina Cohen   +17 more
doaj   +1 more source

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