Perpendicular Shock Reformation and Ion Acceleration

Details Perpendicular Shock Reformation and Ion Acceleration Perpendicular Shock Reformation and Ion Acceleration

Nov 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005ssrv..121....5c&link_type=abstract

Space Science Reviews, Volume 121, Issue 1-4, pp. 5-19

Computer Science

13

Collisionless Shocks, Cosmic Rays, Supernovae Remnants, Heliospheric Termination Shock

Scientific paper

Kinetic simulations of supercritical, quasi-perpendicular shocks yield time-varying solutions that cyclically reform on proton spatio-temporal scales. Whether a shock solution is stationary or reforming depends upon the plasma parameters which, for SNR shocks and the heliospheric termination shock, are ill defined but believed to be within this time-dependent regime. We first review the time-dependent solutions and the acceleration processes of the ions for a proton-electron plasma. We then present recent results for a three-component plasma: background protons, electrons and a second ion population appropriate for SNR (heavy ions) or the termination shock (pickup protons). This ion acceleration generates a suprathermal “injection” population - a seed population for subsequent acceleration at the shock, which may in turn generate ions at cosmic ray energies.

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