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Electron cyclotron maser instability in the solar corona - The role of superthermal tailsThe effect of a superthermal component of electrons on the loss-cone-driven electron cyclotron maser instability is analyzed. It is found that for a superthermal tail with temperature about 10 KeV, the first harmonic (X- and O-mode) is suppressed for n(t)/n(r) of about 1 (n/t/ and n/r/ are the densities of superthermal tail and loss-cone electrons) and the second harmonic (X- and O-modes) is suppressed for n(t)/n(r) less than about 0.1. A qualitative discussion on the formation of superthermal tails is presented and it is suggested that superthermal tails play an important role on the observed or available power, at microwave frequencies, from the electron cyclotron maser instability in the solar corona.
Document ID
19850046040
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Vlahos, L. (Maryland Univ. College Park, MD, United States)
Sharma, R. R. (Maryland, University College Park, MD, United States)
Date Acquired
August 12, 2013
Publication Date
March 1, 1985
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 290
ISSN: 0004-637X
Subject Category
SOLAR PHYSICS
Funding Number(s)
CONTRACT_GRANT: NAGW-81
Distribution Limits
Public
Copyright
Other