A cosmic-ray-driven plasma instability

Details A cosmic-ray-driven plasma instability A cosmic-ray-driven plasma instability

Feb 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989jplph..41...89z&link_type=abstract

Journal of Plasma Physics (ISSN 0022-3778), vol. 41, Feb. 1989, p. 89-95.

Physics

Plasma Physics

14

Galactic Cosmic Rays, Magnetohydrodynamic Stability, Magnetohydrodynamic Waves, Plasma Interactions, Thermal Plasmas, Magnetic Effects, Propagation Modes, Radiative Transfer, Relativistic Particles

Scientific paper

The stability of the MHD equations describing the mutual interaction of cosmic rays, thermal plasma, magnetic field and Alfven waves used in cosmic-ray-shock acceleration theory (e.g. McKenzie and Voelk 1982) is analyzed for linear compressive instabilities. It is found that the inclusion of wave effects implies that the forward propagating sub-Alfvenic mode is unstable on wavelength scales greater than 1 parsec. The role of the instability in astrophysical models is considered.

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