Stability of the equilibrium distributions of interstellar gas,cosmic rays,and magnetic field in an external gravitational field |
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| Authors: | V D Kuznetsov V S Ptuskin |
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| Institution: | 1. Institute of Earth Magnetism, Ionosphere and Propagation of Radio Waves, Academy of Sciences USSR, Moscow Region, U.S.S.R.
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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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