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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.

Information

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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