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Microwave observations of the flare stars UV Ceti, AT Microscopii, and AU MicroscopiiThe results of observations of three red dwarf flare star systems, UV Ceti, AT Mic, and AU Mic, made in February and March of 1985, are reported. Flaring was detected from all three systems, and quiescent emission from UV Cet and AU Mic. Models for the quiescent microwave-emitting corona of UV Cet are discussed. The gravitational scale height in current models is similar to or larger than the height of the corona, which is a striking difference from the case of the solar corona and confirms that magnetic structures are required to confine the radio-emitting corona. The role of precipitation into the chromosphere of the energetic particles in such a corona is explored, and it is shown that for plausible parameters it may be the dominant energy loss mechanism.
Document ID
19870043710
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Kundu, M. R.
(Maryland Univ. College Park, MD, United States)
Jackson, P. D.
(Maryland Univ. College Park, MD, United States)
White, S. M.
(Maryland Univ. College Park, MD, United States)
Melozzi, M.
(Maryland, University College Park, United States)
Date Acquired
August 13, 2013
Publication Date
January 15, 1987
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 312
ISSN: 0004-637X
Subject Category
Astrophysics
Accession Number
87A30984
Funding Number(s)
CONTRACT_GRANT: NGR-21-002-199
CONTRACT_GRANT: NSF ATM-84-15388
Distribution Limits
Public
Copyright
Other

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