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H-alpha manifestation of an energetic limb flare, June 21, 1980H-alpha observations of a limb flare, which were associated with exceptional gamma-ray and hard X-ray emission, are presented and discussed. The good spatial and temporal resolution of the H-alpha data allow investigation of the detailed structure of the elevated flare loops and the intensity variations of the loops, footpoints and surrounding chromosphere during each phase of the flare event. A delay time of about 12 s was found between at least one of the hard X-ray (28-485 keV) peaks and corresponding H-alpha intensity maximum at a loop footpoint. A comparison is made between this event and another well-observed limb flare with many similar characteristics, to seek evidence for the large difference in their levels of energy release.
Document ID
19860032720
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Mccabe, M. K.
(Hawaii, University Honolulu, United States)
Date Acquired
August 12, 2013
Publication Date
July 1, 1985
Publication Information
Publication: Solar Physics
Volume: 98
ISSN: 0038-0938
Subject Category
Solar Physics
Accession Number
86A17458
Funding Number(s)
CONTRACT_GRANT: NGL-12-001-011
CONTRACT_GRANT: NSG-5326
Distribution Limits
Public
Copyright
Other

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