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A cosmic-ray-driven plasma instability

Published online by Cambridge University Press:  13 March 2009

G. P. Zank
G. P. Zank
Affiliation:
Max-Planck-Institut für Kernphysik, Postfach 10 39 80, D-6900 Heidelberg 1, Federal Republic of Germany
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Abstract

The stability of the MHD equations describing the mutual interaction of cosmic rays, thermal plasma, magnetic field and Alfvén waves used in cosmic-ray-shock acceleration theory (e.g. McKenzie & Völk 1982) is analysed for linear compressive instabilities. It is found that the inclusion of wave effects implies that the forward propagating sub-Alfvénic mode is unstable on wavelength scales greater than 1 parsec. The role of the instability in astrophysical models is considered.

Type
Research Article
Information
Journal of Plasma Physics , Volume 41 , Issue 1 , February 1989 , pp. 89 - 95
Copyright
Copyright © Cambridge University Press 1989

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References

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