Astronomy and Astrophysics – Astrophysics
Scientific paper
Jul 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983ap%26ss..94....5k&link_type=abstract
Astrophysics and Space Science (ISSN 0004-640X), vol. 94, no. 1, July 1983, p. 5-21.
Astronomy and Astrophysics
Astrophysics
13
Cosmic Rays, Interstellar Gas, Interstellar Magnetic Fields, Stellar Gravitation, Diffusion Coefficient, Equilibrium Equations
Scientific paper
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.
Kuznetsov Vladimir D.
Ptuskin Vladimir S.
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