Atmospheric interactions of planetary bodies with the solar wind

Details Atmospheric interactions of planetary bodies with the solar wind Atmospheric interactions of planetary bodies with the solar wind

Jul 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982natur.298..229w&link_type=abstract

Nature, vol. 298, July 15, 1982, p. 229-234.

Computer Science

6

Comets, Mars Atmosphere, Plasma Interactions, Solar Wind, Venus Atmosphere, Atmospheric Composition, Bow Waves, Halley'S Comet, Mars 4 Spacecraft, Mars 5 Spacecraft, Pioneer Venus 1 Spacecraft, Planetary Evolution, Planetary Magnetic Fields, Shock Wave Interaction, Planets, Solar Wind, Atmosphere, Interactions, Venus, Structure, Mars, Evolution, Comets, Gases, Plasma, Outgassing, Diagrams

Scientific paper

Data from the Soviet Mars 4-5 and the NASA Pioneer Venus Orbiter spacecraft are examined to model the interaction of the solar wind with planetary bodies, including comets. Venus has been found to have a closer bow shock than the earth, with currents and fields being induced in the ionosheath, which shields the planet from solar wind plasma and fields, although clouds of plasma may be stripped away by solar wind pressure. Resultant O(+) ions are convected downstream. The Mars shock and ionosheath extend further outward than those of Venus, and an explanation is offered based on a different exospheric composition around Mars, in addition to faster planetary rotation. The flows around both Venus and Mars are considered as shear flows, and in primeval form were similar to interactions which occur between the solar wind and cometary comas, where incoming solar protons are neutralized 10,000 km from the surface.

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