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The Effect of Cosmic-Ray Diffusion for Parker Instability

Published online by Cambridge University Press:  26 May 2016

Takuhito Kuwabara ,
Kenji Nakamura  and
Chung-Ming Ko
Takuhito Kuwabara
Affiliation:
Institute of Astronomy, National Central University, Chung-Li, Taiwan 320, R.O.C.
Kenji Nakamura
Affiliation:
Matsue National College of Technology, Nishi-Ikoma-chou, Matsue-city, Shimane 690-8518, Japan
Chung-Ming Ko
Affiliation:
Department of Physics, Institute of Astronomy and Center for Complex Systems, National Central University, Chung-Li, Taiwan 320, R.O.C

Abstract

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We studied the effect of anisotropic cosmic-ray (CR) diffusion for Parker instability by two-dimensional magnetohydrodynamic (MHD) simulation. We investigated two cases: a mechanical perturbation case and an explosional perturbation case. In the former case, the growth rate is proportional to the value of the diffusion coefficient of the CR. In the latter case, the growth rate becomes large in the early stages as the value of diffusion coefficient of the CR is getting small. But, after all, the result becomes the same as the former case in the late stages.

Type
Part 2. Origin
Information
Symposium - International Astronomical Union , Volume 217: Recycling Intergalactic and Interslettar Matter , 2004 , pp. 230 - 232
Copyright
Copyright © Astronomical Society of the Pacific 2004 

References

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