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The Flash Phase of Solar Flares: Satellite Observations of Electrons

Published online by Cambridge University Press:  25 May 2016

R. P. Lin
R. P. Lin*
Affiliation:
Space Sciences Laboratory, University of California, Berkeley, Calif. 94720, U.S.A.

Abstract

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Satellite observations of solar electrons bearing on flare particle acceleration and the generation of radio and X-ray emission are reviewed. The observations support a two stage acceleration process for electrons, one stage commonly occurring at the flare flash phase and accelerating electrons up to ~ 100 keV, and a second stage occurring only in large proton flares and accelerating electrons up to relativistic energies. The location of the acceleration region appears to be no lower than the lower corona.

The accelerated non-relativistic electrons generate type III radio burst emission as they escape from the Sun. Direct spacecraft observations of the type III emission generated near 1 AU and the energetic electrons, provide quantitative information on the characteristics of the electrons exciting type III emission, the production of plasma waves, and the conversion from plasma waves to electromagnetic radiation.

Type
Part II The Flash Phase of Solar Flares
Information
Symposium - International Astronomical Union , Volume 57: Coronal Disturbances , 1974 , pp. 201 - 223
Copyright
Copyright © Reidel 1974 

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