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Temperature-drift instabilities of plasma waves in preflare plasma of solar active regions

Published online by Cambridge University Press:  14 March 2005

A. N. Kryshtal
Affiliation:
Main Astronomical Observatory, National Academy of Sciences of Ukraine, email: kryshtal@mao.kiev.ua, geras@mao.kiev.ua Present address: Main Astron. Observ., 27 Akademika Zabolotnoho St., 03680 Kyiv, Ukraine.
S. V. Gerasimenko
Affiliation:
Main Astronomical Observatory, National Academy of Sciences of Ukraine, email: kryshtal@mao.kiev.ua, geras@mao.kiev.ua
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A preflare situation in a loop structure for stability to the development of plasma waves at the chromosphere part of a current circuit of a loop is investigated. We consider the situation when plasma has the spatial gradients of the density and temperature. In accordance with Heyvarts-Priest-Rust theory such a preflare situation would typically exist when the amplitude of weak electric field in the circuit of an “old” loop in an active region begins to increase as “new” magnetic flux emerges from under the photosphere (Heyvaerts, Priest & Rust (1977)).To search for other articles by the author(s) go to: http://adsabs.harvard.edu/abstract_service.html

Type
Contributed Papers
Copyright
© 2004 International Astronomical Union