Results 1 to 10 of about 13,753 (202)

A semi-analytical foreshock model for energetic storm particle events inside 1 AU [PDF]

open access: yesJournal of Space Weather and Space Climate, 2014
We have constructed a semi-analytical model of the energetic-ion foreshock of a CME-driven coronal/interplanetary shock wave responsible for the acceleration of large solar energetic particle (SEP) events.
Vainio Rami   +5 more
doaj   +3 more sources

Energetic particle investigation using the ERNE instrument [PDF]

open access: yesAnnales Geophysicae, 1996
During solar flares and coronal mass ejections, nuclei and electrons accelerated to high energies are injected into interplanetary space. These accelerated particles can be detected at the SOHO satellite by the ERNE instrument.
J. Torsti   +11 more
doaj   +1 more source

Betatron Acceleration of Suprathermal Electrons within a Small-scale Flux Rope in the Solar Wind

open access: yesThe Astrophysical Journal Letters, 2023
A growing body of evidence from observations, theories, and simulations indicates that particles can be effectively accelerated in solar wind regions filled with dynamic small-scale flux ropes (FRs).
Weiduo Meng   +9 more
doaj   +1 more source

High-energy (>40 MeV) Proton Intensity Enhancements Associated with the Passage of Interplanetary Shocks at 1 au

open access: yesThe Astrophysical Journal, 2023
We analyze periods with elevated >40 MeV proton intensities observed near Earth over a time span of 43 yr (1973–2016) that coincide with the passage of interplanetary (IP) shocks.
D. Lario   +3 more
doaj   +1 more source

A Data-driven, Physics-based Transport Model of Solar Energetic Particles Accelerated by Coronal Mass Ejection Shocks Propagating through the Solar Coronal and Heliospheric Magnetic Fields

open access: yesThe Astrophysical Journal Supplement Series, 2023
In an effort to develop computational tools for predicting radiation hazards from solar energetic particles (SEPs), we have created a data-driven physics-based particle transport model to calculate the injection, acceleration, and propagation of SEPs ...
Ming Zhang   +7 more
doaj   +1 more source

Long-duration high-energy proton events observed by GOES in October 1989 [PDF]

open access: yesAnnales Geophysicae, 1998
We consider the prolonged injection of the high-energy (>10 MeV) protons during the three successive events observed by GOES in October 1989. We apply a solar-rotation-stereoscopy approach to study the injection of the accelerated particles from ...
A. Anttila   +3 more
doaj   +1 more source

The energetic storm particle events of 3 November 2021

open access: yesFrontiers in Astronomy and Space Sciences, 2023
Observations of energetic particles at interplanetary shocks are important to study acceleration mechanisms and their connection with magnetohydrodynamic turbulence.
Federica Chiappetta   +6 more
doaj   +1 more source

In Situ Observation of Electron Acceleration by a Double Layer in the Bow Shock

open access: yesThe Astrophysical Journal, 2023
The importance of the electric potential along the field direction in the acceleration of electrons in the quasi-perpendicular bow shock has been proposed.
C. M. Wang   +6 more
doaj   +1 more source

Magnetospheric response to solar wind forcing: ultra-low-frequency wave–particle interaction perspective [PDF]

open access: yesAnnales Geophysicae, 2022
Solar wind forcing, e.g., interplanetary shock and/or solar wind dynamic pressure pulses impacting Earth's magnetosphere, manifests many fundamental important space physics phenomena, including producing electromagnetic waves, plasma heating, and ...
Q. Zong, Q. Zong, Q. Zong
doaj   +1 more source

Irregular Proton Injection to High Energies at Interplanetary Shocks

open access: yesThe Astrophysical Journal Letters, 2023
How thermal particles are accelerated to suprathermal energies is an unsolved issue, crucial for many astrophysical systems. We report novel observations of irregular, dispersive enhancements of the suprathermal particle population upstream of a high ...
Domenico Trotta   +10 more
doaj   +1 more source

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