Plasma electron observations in the wake of Venus

Details Plasma electron observations in the wake of Venus Plasma electron observations in the wake of Venus

Apr 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978jgr....83.1524y&link_type=abstract

Journal of Geophysical Research, vol. 83, Apr. 1, 1978, p. 1524-1530.

Other

1

Electron Density (Concentration), Plasma Diagnostics, Solar Wind, Venus (Planet), Wakes, Anisotropy, Bow Waves, Electron Energy, Interplanetary Magnetic Fields, Magnetic Field Configurations, Mariner 10 Space Probe, Venus, Mariner 10, Plasmas, Solar Wind, Magnetic Fields, Anisotropy

Scientific paper

Two plasma regimes were observed in the Venus wake, one characterized by negative-going anisotropies accompanied by high bulk speeds and low magnetic variance, and the other characterized by positive-going anisotropies accompanied by low bulk speeds and high magnetic variance. The two modes alternate in time in a stochastic bimodal fashion as interplanetary magnetic field discontinuities propagate past Venus and switch on the positive anisotropies. The positive mode probably represents enhanced planetary ion pickup which results in instabilities, the damping of which energizes the electrons in the distant wake.

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