High temporal resolution observations of electron heating at the bow shock

Details High temporal resolution observations of electron heating at the bow shock High temporal resolution observations of electron heating at the bow shock

Mar 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979ssrv...23...75b&link_type=abstract

(European Space Agency, ESLAB Symposium on Advances in Magnetospheric Physics with GEOS-1 and ISEE-1 and 2, 13th, Innsbruck, Aus

Physics

15

Bow Waves, International Sun Earth Explorers, Plasma Diagnostics, Solar Electrons, Earth Magnetosphere, Electron Density (Concentration), Electron Energy, High Resolution, Ion Beams, Shock Fronts

Scientific paper

Results deduced from highly time-resolved electron plasma profiles of earth's bow shock obtained with fast-plasma-experiment instrumentation on ISEE 1 and 2 are presented. Emphasis is placed on those bow-shock crossings that occurred during periods of high-data-rate transmission, so that the detailed structure of the bow-shock transition for electrons is discerned. The measurements indicate that electron thermalization and density compression are generally synchronized, although exceptions to this rule occur. In a few examples where direct comparison with magnetic-field measurements is possible, the electron-temperature and density profiles at the bow shock are found to be nearly identical to that of the field intensity. The measurements also reveal an interesting feature of the bow-shock profile, viz., an electron-pressure overshoot lasting several tens of seconds and generally followed by an undershoot, which gives the shock profile the appearance of a damped wave.

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