Results 71 to 80 of about 612 (171)

A Tempered Fractional Kinetic Transport Theory for Energetic Particle Interaction with Quasi-two-dimensional Turbulence in the Large-scale Solar Wind

open access: yesThe Astrophysical Journal
Observational evidence is accumulating that turbulence in the solar wind is intermittent (non-Gaussian) because of the strong presence of a quasi-two-dimensional (quasi-2D), low-frequency turbulence component containing nonpropagating, closed, small ...
J. A. le Roux
doaj   +1 more source

The acceleration of energetic particles in the interplanetary medium by transit time damping [PDF]

open access: yesJournal of Geophysical Research, 1976
It has been reported recently by McDonald et al. (1976) that 1-MeV protons may undergo considerable acceleration in corotating streams. It has been suggested recently by Fisk et al. (1974b) that interstellar neutral particles which are ionized in the solar cavity may be accelerated in the solar wind and may account for the anomalous component that is ...
openaire   +1 more source

The Diffusion and Scattering of Accelerating Particles in Compressible MHD Turbulence

open access: yesThe Astrophysical Journal
We numerically study the diffusion and scattering of cosmic rays (CRs) together with their acceleration processes in the framework of the modern understanding of magnetohydrodynamic (MHD) turbulence. Based on the properties of compressible MHD turbulence
Na-Na Gao, Jian-Fu Zhang
doaj   +1 more source

Compression Acceleration of Protons and Heavier Ions at the Heliospheric Current Sheet

open access: yesThe Astrophysical Journal
Recent observations by the Parker Solar Probe (PSP) suggest that protons and heavier ions are accelerated to high energies by magnetic reconnection at the heliospheric current sheet (HCS).
Giulia Murtas, Xiaocan Li, Fan Guo
doaj   +1 more source

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

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   +1 more source

Electron Acceleration at Shock Ripples: Role of Pitch-angle Diffusion

open access: yesThe Astrophysical Journal
Suprathermal electrons are routinely observed in interplanetary space. At higher energies, there are in-situ evidences that shocks, both interplanetary shocks, often driven by fast coronal mass ejections, and terrestrial bow shocks, can accelerate ...
Y. D. Xu, G. Li, S. Yao
doaj   +1 more source

Electron Acceleration in Magnetic Reconnection-driven Turbulence in the Earth’s Magnetotail

open access: yesThe Astrophysical Journal
The Magnetospheric Multiscale mission has identified regions of magnetic reconnection surrounded by strong turbulence associated with particle acceleration in the Earth’s magnetotail.
R. E. Ergun   +9 more
doaj   +1 more source

Towards advanced forecasting of solar energetic particle events with the PARASOL model

open access: yesJournal of Space Weather and Space Climate
Gradual solar energetic particle (SEP) events are generally attributed to the particle acceleration in shock waves driven by coronal mass ejections (CMEs). Space-weather effects of such events are important, so there has been continuous effort to develop
Afanasiev Alexandr   +2 more
doaj   +1 more source

Model for Particles Accelerated at Interplanetary Shocks starting with a Power Law Energy Spectrum

open access: yes, 2022
This work is supported by the NSF-REU solar physics program at SAO, grant number AGS-1850750. This work is also partially supported by the NSF under grant 1850774.
openaire   +1 more source

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