Additional Stochastic Acceleration of Nonthermal Electrons during Their Interaction with Whistler Turbulence in Flare Loops

The process of additional acceleration of nonthermal electrons during their stochastic interaction with the turbulence of whistlers propagating along a flare loop is studied. The degree of influence of the effect on the pitch-angle scattering, energy, and spatial distributions of electrons has been...

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Bibliographic Details
Published in:Geomagnetism and Aeronomy 2022-12, Vol.62 (8), p.1059-1065
Main Authors: Filatov, L. V., Melnikov, V. F.
Format: Article
Language:English
Subjects:
Earth and Environmental Science
Earth Sciences
Electron acceleration
Electrons
Energy spectra
Geophysics/Geodesy
Pitch (inclination)
Scattering
Spatial distribution
Turbulence
Whistlers
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Summary:The process of additional acceleration of nonthermal electrons during their stochastic interaction with the turbulence of whistlers propagating along a flare loop is studied. The degree of influence of the effect on the pitch-angle scattering, energy, and spatial distributions of electrons has been estimated. It is shown that at a certain energy density, whistler turbulence can strongly affect not only pitch-angle scattering, but also electron acceleration in a flare loop, which results in a rapid and significant (by orders of magnitude) increase in the concentration of high-energy ( E = 100–5000 keV) electrons that is also accompanied by a significant flattening of their energy spectrum.
ISSN:0016-7932
1555-645X
0016-7940
DOI:10.1134/S0016793222080102