Factors controlling the location of the Venus bow shock

Details Factors controlling the location of the Venus bow shock Factors controlling the location of the Venus bow shock

Jul 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983jgr....88.5613t&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 88, July 1, 1983, p. 5613-5621.

Physics

31

Bow Waves, Planetary Magnetic Fields, Shock Waves, Solar Planetary Interactions, Solar Wind, Venus Atmosphere, Mach Number, Pioneer Venus 1 Spacecraft, Plasma Interactions, Solar Position, Venus, Bow Shock, Position(Location), Magnetic Fields, Pioneer Venus, Orbiters, Pvo, Solar Wind, Comparisons, Size, Venera 9, Venera 10, Dynamics, Pressure, Shape

Scientific paper

The location of the Venus bow shock determined from magnetic field measurements during the first and third years of Pioneer Venus orbiter operation is examined and compared with nearly simultaneously obtained interplanetary solar wind data to determine those factors that control the size of the Venus bow shock. The location of the intersection of the bow shock with the terminator that is best determined by the data does not vary significantly between years 1979 and 1981 and is only 16 percent more distant than the Venera 9 and 10 shock when account is taken of solar wind aberration. Alfvenic Mach number and magnetosonic Mach number affect the size of the bow shock significantly. Solar wind dynamic pressure has a lesser effect. No significant asymmetries in the shock shape were found either as a result of the orientation of the clock angle of the IMF in the terminator plane or the angle of the IMF relative to the shock normal.

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