Instability in a shock propagating through gas with a cosmic-ray component

Details Instability in a shock propagating through gas with a cosmic-ray component Instability in a shock propagating through gas with a cosmic-ray component

Dec 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986pazh...12..842b&link_type=abstract

(Pis'ma v Astronomicheskii Zhurnal, vol. 12, Nov. 1986, p. 842-847) Soviet Astronomy Letters (ISSN 0360-0327), vol. 12, Nov.-Dec

Astronomy and Astrophysics

Astronomy

9

Cosmic Rays, Gas Dynamics, Particle Acceleration, Shock Wave Propagation, Linear Equations, Magnetoacoustic Waves, Magnetohydrodynamic Waves, Stability

Scientific paper

A linear analysis of the instability of a shock wave propagating through a gas that contains cosmic-ray particles shows that the precursor, a zone in the shock front formed by the pressure of the shock-accelerated cosmic rays, will be unstable against excitation of magnetoacoustic waves. The growth rate of this instability is determined, and its role in generating ultrahigh-energy cosmic rays is discussed.

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