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Carbon-poor solar flare eventsA survey of energetic particle flux enhancements over the period from October 1973 to December 1977 has been performed by using the University of Maryland/Max-Planck-Institut ULET sensor on the IMP 8 spacecraft. During the four-year period of the study, it is found that the most extreme periods of Fe enrichment compared with oxygen were during solar flare events in February 1974 and May 1974. In these same events, the carbon abundance with respect to oxygen was significantly depleted when compared with a value C:O of about 0.45:1 for typical solar flares. These observations, taken together with previously reported He-3 enrichment in these events, give strong evidence for the importance of a wave-particle interaction in the preinjection heating of the ambient matter.
Document ID
19790061103
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Mason, G. M.
(Maryland Univ. College Park, MD, United States)
Gloeckler, G.
(Maryland, University College Park, Md., United States)
Hovestadt, D.
(Max-Planck-Institut fuer Physik und Astrophysik Garching, Germany)
Date Acquired
August 9, 2013
Publication Date
July 15, 1979
Publication Information
Publication: Astrophysical Journal
Subject Category
Solar Physics
Accession Number
79A45116
Funding Number(s)
CONTRACT_GRANT: NGL-21-002-224
CONTRACT_GRANT: NAS5-11063
Distribution Limits
Public
Copyright
Other

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