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Stability of the equilibrium distributions of interstellar gas, cosmic rays, and magnetic field in an external gravitational field

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Abstract

An interstellar medium consisting of regular and turbulent magnetic fields, thermal gas and cosmic rays is tested for stability in a stellar gravitational field. Cosmic rays are described by the diffusion-convection equation and the stability region of the system is determined. It is shown that the presence of cosmic rays is a stabilizing factor if the cosmic-ray diffusion coefficient is sufficiently small. The dependence of the maximum growth rate of instability on the cosmic-ray diffusion coefficient is qualitatively determined.

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Authors and Affiliations

  1. Institute of Earth Magnetism, Ionosphere and Propagation of Radio Waves, Academy of Sciences USSR, Moscow Region, U.S.S.R.

    V. D. Kuznetsov & V. S. Ptuskin

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  1. V. D. Kuznetsov
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  2. V. S. Ptuskin
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Kuznetsov, V.D., Ptuskin, V.S. Stability of the equilibrium distributions of interstellar gas, cosmic rays, and magnetic field in an external gravitational field. Astrophys Space Sci 94, 5–21 (1983). https://doi.org/10.1007/BF00651757

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  • DOI: https://doi.org/10.1007/BF00651757

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