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Microwave and hard X-ray imaging of a solar flare on 1980 November 5VLA and SMM hard X ray data on the solar flares of November 5, 1980 are analyzed and compared with data from other sources. The VLA provided measurements at 15 GHz at 10 sec intervals, using left and right circular polarizations with a 0.6 arcsec resolution. The hard X ray imaging spectrometer on the SMM obtained data in six bands from 3.5-30 keV, with 8 x 8 arcsec resolution and 1.5 sec separation. The data were examined for a possible nonthermal source for the microwave component of the emissions detected, the origin of 16-30 keV excess fluxes, the relation between the X ray and microwave sources, the magnetic connection between observed loops, and the physical characteristics of the radiating loop. The data were consistent with a model that assumes fast electrons are accelerated to a single power-law energy distribution and freely stream along the magnetic field. The data also agreed with a thick-target model for solar flare X ray emission.
Document ID
19830052895
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Hoyng, P.
(Utrecht Rijksuniversiteit, Utrecht, Netherlands)
Marsh, K. A.
(Utrecht State Univ. Netherlands)
Zirin, H.
(California Institute of Technology Pasadena, CA, United States)
Dennis, B. R.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 11, 2013
Publication Date
May 15, 1983
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 268
ISSN: 0004-637X
Subject Category
Solar Physics
Accession Number
83A34113
Funding Number(s)
CONTRACT_GRANT: F19628-77-C-0106
CONTRACT_GRANT: NGL-05-002-034
CONTRACT_GRANT: NSG-5327
CONTRACT_GRANT: NSF ATM-79-06345
CONTRACT_GRANT: NSF AST-79-16149
Distribution Limits
Public
Copyright
Other

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