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Oblique stability of circularly polarized MHD waves

Published online by Cambridge University Press:  13 March 2009

E. Mjølhus  and
T. Hada
E. Mjølhus
Affiliation:
Institute of Mathematical and Physical Sciences, University of Tromsø, P.O. Box 953, N-9001 Tromsø, Norway
T. Hada
Affiliation:
University of California, Los Angeles, U.S.A.
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Abstract

The stability of finite-amplitude weakly dispersive circularly polarized MHD wave trains with respect to oblique modulations is investigated. The mathematical model is a multi-dimensional extension of the DNLS equation. We have found that the right-hand-polarized wave, which is stable with respect to parallel modulations, is unstable with respect to certain oblique modulations for most primary wavenumbers.

Type
Research Article
Information
Journal of Plasma Physics , Volume 43 , Issue 2 , April 1990 , pp. 257 - 268
Copyright
Copyright © Cambridge University Press 1990

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