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Stochastic three-wave interaction in flaring solar loopsA model is proposed for the dynamic structure of high-frequency microwave bursts. The dynamic component is attributed to beams of precipitating electrons which generate electrostatic waves in the upper hybrid branch. Coherent upconversion of the electrostatic waves to electromagnetic waves produces an intrinsically stochastic emission component which is superposed on the gyrosynchrotron continuum generated by stably trapped electron fluxes. The role of the density and temperature of the ambient plasma in the wave growth and the transition of the three wave upconversion to stochastic, despite the stationarity of the energy source, are discussed in detail. The model appears to reproduce the observational features for reasonable parameters of the solar flare plasma.
Document ID
19840033448
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Vlahos, L.
(Maryland Univ. College Park, MD, United States)
Sharma, R. R.
(Maryland Univ. College Park, MD, United States)
Papadopoulos, K.
(Maryland, University College Park, MD, United States)
Date Acquired
August 12, 2013
Publication Date
December 1, 1983
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 275
ISSN: 0004-637X
Subject Category
Solar Physics
Accession Number
84A16235
Funding Number(s)
CONTRACT_GRANT: N00014-79-C-0665
CONTRACT_GRANT: NAGW-81
Distribution Limits
Public
Copyright
Other

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