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Analysis of ultraviolet and X-ray observations of three homologous solar flares from SMMThree homologous flares observed in the UV lines of Fe XXI and O V and in X-rays from the SMM were studied. It was found that: (1) the homology of the flares was most noticeable in Fe XXI and soft X-ray emissions; (2) the three flares shared many of the same loop footprints which were located in O V bright kernals associated with hard X-ray bursts; and (3) in spite of the strong spatial homology, the temporal evolution in UV and X-ray emissions varied from flare to flare. A comparison between the UV observations and photospheric magnetograms revealed that the basic flare configuration was a complex loop system consisting of many loops or bundles of loops.
Document ID
19870059337
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Cheng, Chung-Chieh (U.S. Navy, E. O. Hulburt Center for Space Research, Washington DC, United States)
Pallavicini, Roberto (Arcetri Osservatorio Astrofisico, Florence, Italy)
Date Acquired
August 13, 2013
Publication Date
July 1, 1987
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 318
ISSN: 0004-637X
Subject Category
SOLAR PHYSICS
Funding Number(s)
CONTRACT_GRANT: DRR-W15367
Distribution Limits
Public
Copyright
Other