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X-ray and H-alpha observations of a filament-disappearance flare - An empirical analysis of the magnetic field configurationOn August, 29, 1973, a flare event occurred that involved the disappearance of a filament near central meridian. The event, well-observed in X-rays on Skylab and in H-alpha, was a four-ribbon flare involving both new and old magnetic inversion lines which were roughly parallel. The H-alpha, X-ray, and magnetic field data are used to deduce the magnetic polarities of the H-alpha brightening at the footpoints of the brightest X-ray loops. It is suggested that the event involved a reconnection of magnetic field lines rather than a brightening in place of preexisting loops. The simultaneity of the H-alpha brightening onsets in the four ribbons and the apparent lack of an eruption of the filament are consistent with this interpretation.
Document ID
19810049037
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Kahler, S. W.
(American Science and Engineering, Inc. Cambridge, MA, United States)
Webb, D. F.
(American Science and Engineering, Inc. Cambridge, Mass., United States)
Moore, R. L.
(California Institute of Technology Pasadena, Calif., United States)
Date Acquired
August 11, 2013
Publication Date
April 1, 1981
Publication Information
Publication: Solar Physics
Volume: 70
Subject Category
Solar Physics
Accession Number
81A33441
Funding Number(s)
CONTRACT_GRANT: NAS8-27758
CONTRACT_GRANT: F19628-77-C-0106
CONTRACT_GRANT: NAS8-33215
Distribution Limits
Public
Copyright
Other

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