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Impulsive phase of solar flares. I - Characteristics of high energy electronsThe models describing the operative physical processes occurring during the impulsive phase of a solar flare can be broadly classified as thermal or nonthermal models. The current investigation is part of a series of studies which analyze the general characteristics of the 'nonthermal' models. The results are presented of an analysis regarding the steady state distribution of energetic electrons within the flare plasma. The time independent Fokker-Planck equation is used to determine the steady state distribution of the electrons in the ambient plasma. The model investigated encompasses thick-target, thin-target, and trap aspects of nonthermal hard X-ray models. High energy electrons with some initial energy spectrum and pitch angle distribution are injected at a height above the photosphere either into a closed magnetic loop structure or into an open field structure. Some approximate analytic solutions are discussed and the results of a numerical analysis are presented.
Document ID
19820037984
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Leach, J.
(Stanford Univ. CA, United States)
Petrosian, V.
(Stanford University Stanford, CA, United States)
Date Acquired
August 10, 2013
Publication Date
December 15, 1981
Publication Information
Publication: Astrophysical Journal
Subject Category
Solar Physics
Accession Number
82A21519
Funding Number(s)
CONTRACT_GRANT: NGL-05-020-272
CONTRACT_GRANT: NSG-7092
Distribution Limits
Public
Copyright
Other

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