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Title:
Properties of solar flare electrons, deduced from hard X-ray and spatially resolved microwave observations
Authors:
Marsh, K. A.; Hurford, G. J.; Zirin, H.; Dulk, G. A.; Dennis, B. R.; Frost, K. J.; Orwig, L. E.
Affiliation:
AA(California Institute of Technology, Pasadena, CA), AB(California Institute of Technology, Pasadena, CA), AC(California Institute of Technology, Pasadena, CA), AD(Colorado, University, Boulder, CO), AE(NASA, Goddard Space Flight Center, Greenbelt, MD), AF(NASA, Goddard Space Flight Center, Greenbelt, MD), AG(NASA, Goddard Space Flight Center, Greenbelt, MD)
Publication:
Astrophysical Journal, Part 1, vol. 251, Dec. 15, 1981, p. 797-804. (ApJ Homepage)
Publication Date:
12/1981
Category:
Solar Physics
Origin:
STI
NASA/STI Keywords:
Electron Acceleration, Microwave Spectra, Solar Electrons, Solar Flares, Spatial Resolution, X Ray Spectra, Astronomical Maps, Energetic Particles, Microwave Interferometers, Solar Maximum Mission, Spatial Distribution, Spectral Energy Distribution, X Ray Spectroscopy
DOI:
10.1086/159523
Bibliographic Code:
1981ApJ...251..797M

Abstract

An important question concerning an understanding of impulsive solar flares is related to the energetic electrons responsible for the microwave and the hard X-ray emission. A description is presented of an investigation in which spatially resolved microwave observations of an impulsive flare and hard X-ray data from the Solar Maximum Mission (SMM) are used to test the hypothesis that the two types of emission come from the same basic electron population. The considered observations are found to imply that the microwaves and hard X-rays were not produced by a common population of electrons with either a Maxwellian or single power-law energy distribution. It is suggested that the calculations should be repeated when observations of stronger events become available, for which a better determination of the X-ray spectrum is possible. The possibility is considered that microwaves and moderately hard X-rays come from spatially different regions.

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