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Energetic Particles in a Flare Loop: Spectra and Radiation Signatures

Published online by Cambridge University Press:  19 July 2016

P. A. Bespalov ,
V. V. Zaitsev  and
A. V. Stepanov
P. A. Bespalov
Affiliation:
Institute of Applied Physics Gorky, USSR
V. V. Zaitsev
Affiliation:
Institute of Applied Physics Gorky, USSR
A. V. Stepanov
Affiliation:
Crimean Astrophysical Observatory Crimea, USSR

Abstract

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It has been shown that high energy particle spectra, particle dynamics, and radiation in a flare loop are determined by wave-particle interactions. The electron-whistler interaction occurs under conditions of strong pitch angle diffusion that makes the particle distribution function isotropic. The flare loop electrons retain information about the particle source spectrum. The interaction of energetic ions with Alfven waves is characterized by strong, moderate, and weak diffusion. The time delays in hard X-ray and gamma-ray emission during one-step acceleration processes might be understood in terms of a trap-plus-turbulent propagation model. The density of precipitating particles is less than or equal to the trapping one. Radiation signatures of flare loop electrons are discussed.

Type
VIII. Solar Flares
Information
Symposium - International Astronomical Union , Volume 142: Basic Plasma Processes on the Sun , 1990 , pp. 421 - 427
Copyright
Copyright © Kluwer 1990 

References

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