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Soliton and strong Langmuir turbulence in solar flare processesThe occurrence of modulational instability in the current sheet of a solar flare is investigated. Special attention is given to the plasma microinstability in this sheet and its relation to the flare process. It is found that solitons or strong Langmuir turbulence are likely to occur in the diffusion region under solar flare conditions in which the electric resistivity could be enhanced by several orders of magnitude in the region, resulting in significant heating and stochastic acceleration of particles. A numerical example is used to demonstrate the transition of the magnetic field velocity and plasma density from the outer MHD region into the diffusive region and then back out again with the completion of the energy conversion process. This is all made possible by an increase in resistivity of four to five orders of magnitude over the classical value.
Document ID
19890065006
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Song, M. T.
(Alabama Univ. Huntsville, AL, United States)
Wu, S. T.
(Alabama, University Huntsville, United States)
Dryer, M.
(NOAA, Space Environment Laboratory, Boulder CO, United States)
Date Acquired
August 14, 2013
Publication Date
February 1, 1989
Publication Information
Publication: Astrophysics and Space Science
Volume: 152
Issue: 2 Fe
ISSN: 0004-640X
Subject Category
Solar Physics
Accession Number
89A52377
Funding Number(s)
CONTRACT_GRANT: NAGW-9
CONTRACT_GRANT: AF-AFOSR-88-0013
Distribution Limits
Public
Copyright
Other

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