Theory and simulation of collisionless parallel shocks

Details Theory and simulation of collisionless parallel shocks Theory and simulation of collisionless parallel shocks

Sep 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988jgr....93.9649q&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 93, Sept. 1, 1988, p. 9649-9680. NASA-DOE-supported research.

Physics

139

Collisionless Plasmas, Magnetohydrodynamic Stability, Plasma-Electromagnetic Interaction, Shock Wave Propagation, Beam Interactions, Bow Waves, Interplanetary Magnetic Fields, Plasma-Particle Interactions

Scientific paper

This paper presents a self-consistent theoretical model for collisionless parallel shock structure, based on the hypothesis that shock dissipation and heating can be provided by electromagnetic ion beam-driven instabilities. It is shown that shock formation and plasma heating can result from parallel propagating electromagnetic ion beam-driven instabilities for a wide range of Mach numbers and upstream plasma conditions. The theoretical predictions are compared with recently published observations of quasi-parallel interplanetary shocks. It was found that low Mach number interplanetary shock observations were consistent with the explanation that group-standing waves are providing the dissipation; two high Mach number observations confirmed the theoretically predicted rapid thermalization across the shock.

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