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Multiple loop activations and continuous energy release in the solar flare of June 15, 1973The spatial and temporal evolution of the high-temperature plasma in the solar flare of June 15, 1973, is studied using XUV spectroheliograms and X-ray filtergrams obtained from Skylab. The analysis focuses on the changing forms and brightness of Fe XXIII 263-A and Fe XXIV 255-A images. Temperatures and emission measures computed for different times during the flare are compared with those derived from Solrad-9 flux data, the electron temperature in the bright compact core of the Fe XXIV image is determined, and a coronal origin is suggested for this bright core. The observational evidence shows that the overall flare event involved a number of different preexisting loops and arches which were activated in succession. The activation and heating are found to have persisted well past the end of the burst phase, implying that the energy release did not end when the impulsive phase was over. The overall development of the flare is summarized on the basis of the observed order of appearance of the loops.
Document ID
19780039122
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Widing, K. G.
(Hulburt (E. O.) Center for Space Research Washington, DC, United States)
Dere, K. P.
(U.S. Navy, E. O. Hulburt Center for Space Research, Washington D.C., United States)
Date Acquired
August 9, 2013
Publication Date
December 1, 1977
Publication Information
Publication: Solar Physics
Volume: 55
Subject Category
Solar Physics
Accession Number
78A23031
Funding Number(s)
CONTRACT_GRANT: DPR-S60404G
Distribution Limits
Public
Copyright
Other

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