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Magnetohydrodynamic instability driven by cosmic rays

Published online by Cambridge University Press:  13 March 2009

Chung-Ming Ko  and
An-Tzong Jeng
Chung-Ming Ko
Affiliation:
Department of Physics and Institute of Astronmomy, National Central University, Chung-Li, Taiwan, Republic of China
An-Tzong Jeng
Affiliation:
Department of Physics and Institute of Astronmomy, National Central University, Chung-Li, Taiwan, Republic of China
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Abstract

Magneto-acoustic instability driven by cosmic rays and the waves that they excite was first studied by McKenzie and Webb and by Zank. In the present paper this instability is reconsidered. In general, the cosmic-ray plasma system is unstable. However, depending on how the time scale is chosen, the results and interpretation may be different from those of McKenzie and Webb and of Zank, particularly in the long- and short-wavelength limits. To illustrate this instability in an astrophysical context, we take our Galaxy and supernova remnants as examples. In those examples, length scales shorter than 2.5 kpc and 1.5 pc respectively are susceptible to this instability, and the growth times are of the order of 4 × 108 and 1.5 × 104 yr respectively.

Type
Research Article
Information
Journal of Plasma Physics , Volume 52 , Issue 1 , August 1994 , pp. 23 - 42
Copyright
Copyright © Cambridge University Press 1994

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References

Axford, W. I., Leer, E. & McKenzie, J. F. 1991 Astron. Astrophys. 111, 317.Google Scholar
Bereztnskii, V. S., Bulanov, S. V., Dogiel, V. A., Ginzburg, V. L. & Ptuskin, V. S. 1990 Astrophysics of Cosmic Rays. North-Holland.Google Scholar
Breitschwerdt, D., McKenzie, J. F. & Völk, H. J. 1991 Astron. Astrophys. 245, 79.Google Scholar
Breitschwerdt, D., McKenzie, J. F. & Völk, H. J. 1993 Astron. Astrophys. 269, 54.Google Scholar
Drury, L. O'C. & Völk, H. J. 1981 Astrophys. J. 248, 344.CrossRefGoogle Scholar
Drury, L. O'C., Markiewicz, W. J. & Völk, H. J. 1989 Astron. Astrophys. 225, 179.Google Scholar
Duffy, P. 1992 Astron. Astrophys. 262, 281.Google Scholar
Hartquist, T. W. & Morfill, G. E. 1986 Astrophys. J. 311, 518.CrossRefGoogle Scholar
Ipavich, F. M. 1975 Astrophys. J. 196, 107.CrossRefGoogle Scholar
Jones, T. W. & Kang, H. S. 1992 Astrophys. J. 396, 575.CrossRefGoogle Scholar
Ko, C. M. 1991 a Astron. Astrophys. 242, 85.Google Scholar
Ko, C. M. 1991 b Astron. Astrophys. 251, 713.Google Scholar
Ko, C. M. 1992 Astron. Astrophys. 259, 377.Google Scholar
Ko, C. M., Dougherty, M. K. & Mckenzie, J. F. 1991 Astron, Astrophys. 241, 62.Google Scholar
Ko, C. M., Jokipii, J. R. & Webb, G. M. 1988 Astrophys. J. 326, 761.CrossRefGoogle Scholar
Lee, M. A. & Axford, W. I. 1988 Astron. Astrophys. 194, 297.Google Scholar
McIvor, I. 1977 Mon. Not. R. Astron. Soc. 178, 85.CrossRefGoogle Scholar
McKenzie, J. F. & Völk, H. J. 1982 Astron. Astrophys. 116, 191.Google Scholar
McKenzie, J. F. & Webb, G. M. 1984 J. Plasma Phys. 31, 275.CrossRefGoogle Scholar
Ptuskin, V. S. 1981 Astrophys. Space Sci. 76, 265.CrossRefGoogle Scholar
Webb, G. M. 1983 Astron. Astrophys. 127, 97.Google Scholar
Zank, G. P. 1989 a J. Plasma Phys. 41, 89.CrossRefGoogle Scholar
Zank, G. P. 1989 b Astron. Astrophys. 225, 37.Google Scholar