Electron velocity distributions near the earth's bow shock

Details Electron velocity distributions near the earth's bow shock Electron velocity distributions near the earth's bow shock

Jan 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983jgr....88...96f&link_type=abstract

Journal of Geophysical Research, vol. 88, Jan. 1, 1983, p. 96-110. Bundesministerium für Forschung und Technologie Contract No.

Physics

196

Bow Waves, Distribution Functions, Electron Distribution, Magnetopause, Shock Waves, Velocity Distribution, Collisionless Plasmas, Data Processing, International Sun Earth Explorer 2, Magnetosheath, Solar Terrestrial Interactions

Scientific paper

New information is presented on the general characteristics of electron distribution functions upstream, within, and downstream of the earth's bow shock, thereby providing new insights into the instabilities in collisionless shocks. The results presented are from a survey of electron velocity distributions measured near the earth's bow shock between October 1977 and December 1978 using the Los Alamos/Garching plasma instrumentation aboard ISEE 2. A wide variety of distribution shapes is found within the different plasma regions in close proximity to the bow shock. It is found that these shapes can be classified into general types that are characteristic of three different plasma regions, namely the upstream region or electron foreshock, the shock proper where most of the heating occurs, and the downstream region or the magnetosheath. Evidence is provided that field-aligned, rather than cross-field, instabilities are the major source of electron dissipation in the earth's bow shock.

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