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On the modulational instability of hydromagnetic waves parallel to the magnetic field

Published online by Cambridge University Press:  13 March 2009

Einar Mjølhus
Einar Mjølhus
Affiliation:
The Auroral Observatory, University of Tromsø, Norway
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Abstract

The stability of circularly polarized waves of finite amplitude propagating parallel to the magnetic field is studied. A set of equations for slowly varying waves of arbitrary amplitude is obtained. A discussion of the stability of the waces is based on this set of equations. Earlier results are confirmed; in addition we find that finite amplitude always promotes stability. An amplitude dependent stability condition for long waves, previously obtained by the author, is confirmed.

Type
Research Article
Information
Journal of Plasma Physics , Volume 16 , Issue 3 , December 1976 , pp. 321 - 334
Copyright
Copyright © Cambridge University Press 1976

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References

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