Constraints on electron temperature anisotropies in sheath regions of interplanetary shocks

Details Constraints on electron temperature anisotropies in sheath regions of interplanetary shocks Constraints on electron temperature anisotropies in sheath regions of interplanetary shocks

Mar 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012p%26ss...62..100x&link_type=abstract

Planetary and Space Science, Volume 62, Issue 1, p. 100-103.

Computer Science

Scientific paper

A statistical study of electron data observed within magnetosheath regions after interplanetary (IP) shocks driven by magnetic clouds has been performed to understand the constraints on temperature anisotropies of suprathermal electron component due to collective effects of electron wave-particle interactions with plasma micro-instabilities. Results show that although shock heating and acceleration, downstream selective reflection and leakage into upstream region, and wave-particle scattering all can contribute to suprathermal electron temperature anisotropy in downstream sheath regions of IP shocks, the consequent whistler anisotropy instabilities triggered by the sufficiently large temperature anisotropies can constrain temperature anisotropy increase to a more nearly isotropic distribution as plasma beta increases.

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