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The flares of August 1972Analysis is made of observations of the August, 1972 flares at Big Bear and Tel Aviv, involving monochromatic movies, magnetograms, and spectra. In each flare the observations fit a model of particle acceleration in the chromosphere with emission produced by impart and by heating by the energetic electrons and protons. The region showed twisted flux and high gradients from birth, and flares appear due to strong magnetic shears and gradients across the neutral line produced by sunspot motions. Post flare loops show a strong change from sheared, force-free fields parallel to potential-field-like loops, perpendicular to the neutral line above the surface.
Document ID
19730017154
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Zirin, H. (California Inst. of Tech. Pasadena, CA, United States)
Tanaka, K. (California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
August 7, 2013
Publication Date
January 1, 1972
Subject Category
Space Sciences
Report/Patent Number
NASA-CR-132195
BBSO-0128
Report Number: NASA-CR-132195
Report Number: BBSO-0128
Accession Number
73N25881
Funding Number(s)
CONTRACT_GRANT: NGR-05-002-034
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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