Results 11 to 20 of about 78,898 (343)

DRIFT-INDUCED DECELERATION OF SOLAR ENERGETIC PARTICLES [PDF]

open access: yesThe Astrophysical Journal, 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 particle simulations.
S. Dalla, M. S. Marsh, T. Laitinen
openaire   +4 more sources

Solar energetic particles and radio burst emission [PDF]

open access: yesJournal 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   +2 more
doaj   +2 more sources

Dispersive Suprathermal Ion Events Observed by the Parker Solar Probe Mission

open access: yesThe 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   +17 more
doaj   +1 more source

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

open access: yesAnnales 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   +3 more
doaj   +1 more source

3He-Rich Solar Energetic Particles: Solar Sources [PDF]

open access: yesSpace Science Reviews, 2020
3He-rich solar energetic particles (SEPs), showing up to a 10,000-fold abundance enhancement of rare elements like 3He or ultra-heavy nuclei, have been a puzzle for more than 50 years. One reason for the current lack of understanding of 3He-rich SEPs is the difficulty resolving the source regions of these commonly occurring events.
openaire   +3 more sources

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

open access: yesFrontiers 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   +3 more
doaj   +1 more source

Solar flares and energetic particles [PDF]

open access: yesPhilosophical 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   +3 more sources

Transmission and Emission of Solar Energetic Particles in Semi-transparent Shocks. [PDF]

open access: yes, 2014
While major solar energetic particle (SEP) events are associated with coronal mass ejection (CME)-driven shocks in solar wind, accurate SEP measurements reveal that more than one component of energetic ions exist in the beginning of the events.
Axford   +21 more
core   +1 more source

Current status and possible extension of the global neutron monitor network

open access: yesJournal 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

Ulysses COSPIN observations of cosmic rays and solar energetic particles from the South Pole to the North Pole of the Sun during solar maximum [PDF]

open access: yesAnnales Geophysicae, 2003
In 2000–2001 Ulysses passed from the south to the north polar regions of the Sun in the inner heliosphere, providing a snapshot of the latitudinal structure of cosmic ray modulation and solar energetic particle populations during a period near ...
R. B. McKibben   +12 more
doaj   +1 more source

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