Results 11 to 20 of about 669 (180)
Acceleration of Solar Wind Particles by Traveling Interplanetary Shocks [PDF]
The Astrophysical Journal, 2019 Abstract The acceleration of thermal solar wind (SW) protons at spherical interplanetary shocks driven by coronal mass ejections is investigated. The SW velocity distribution is represented using κ-functions, which are transformed in response to simulated shock transitions in the fixed-frame flow speed, plasma number density, and ...
P. L. Prinsloo +2 more
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The 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
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The 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
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Long-duration high-energy proton events observed by GOES in October 1989 [PDF]
Annales 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
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The energetic storm particle events of 3 November 2021
Frontiers 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
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On the acceleration of energetic particles in the interplanetary medium [PDF]
Journal of Geophysical Research, 1976 Fermi scattering and transit time damping are two possible mechanisms for accelerating low energy protons (approximately 1 Mev) in co-rotating particle streams. Solutions to the equations which govern particle behavior in such streams are presented. It was found that acceleration by Fermi scattering requires a scattering mean-free path more than an ...
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Irregular Proton Injection to High Energies at Interplanetary Shocks
The 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
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In Situ Observation of Electron Acceleration by a Double Layer in the Bow Shock
The 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
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Magnetospheric response to solar wind forcing: ultra-low-frequency wave–particle interaction perspective [PDF]
Annales 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
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Frontiers in Astronomy and Space Sciences, 2021 Solar energetic particles (SEPs) are sporadically ejected from the Sun during flares and coronal mass ejections. They are of major astrophysical interest, because the proximity of the Sun allows for detailed multi-messenger studies.
Karl-Ludwig Klein
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