On the Stability of Shocks Modified by Particle Acceleration

Details On the Stability of Shocks Modified by Particle Acceleration On the Stability of Shocks Modified by Particle Acceleration

Nov 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986mnras.223..353d&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Vol. 223, NO.2/NOV15, P. 353, 1986

Computer Science

Sound

102

Scientific paper

We show, using a two-fluid approximation, that sound waves in a gas containing cosmic rays can be amplified if the scale height of the cosmic rays is less than a critical scale of order χ/a. χ and a are the cosmic-ray diffusion coefficient and gas sound speed, respectively. The non-linear development has been calculated numerically and we find that sound waves can grow into strong gas shocks. The instability is likely to have important effects on cosmic-ray modified shocks.

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