Pioneer Venus observations of plasma and field structure in the near wake of Venus

Details Pioneer Venus observations of plasma and field structure in the near wake of Venus Pioneer Venus observations of plasma and field structure in the near wake of Venus

Nov 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982jgr....87.9205l&link_type=abstract

Journal of Geophysical Research, vol. 87, Nov. 1, 1982, p. 9205-9210.

Astronomy and Astrophysics

Astronomy

28

Ionospheric Ion Density, Magnetic Field Configurations, Planetary Magnetic Fields, Plasma Density, Plasma Diagnostics, Space Plasmas, Venus Atmosphere, Density Distribution, Electrostatic Probes, Magnetometers, Mass Spectrometers, Near Wakes, Pioneer Venus Spacecraft, Pioneer Venus 1 Spacecraft, Planetary Ionospheres, Planetary Temperature, Plasma Waves, Spaceborne Astronomy

Scientific paper

Ionospheric plasma density depletions or 'holes' are observed by the Pioneer Venus orbiter in association with radial magnetic fields in the near wake of Venus. This report presents examples of the collected observations of these unexpected features of the Venus nightside ionosphere obtained by the Langmuir probe, magnetometer, ion mass spectrometer, retarding potential analyzer, plasma analyzer, and electric field experiments. The connection between plasma density depletions and temperature changes, changes in ion composition, plasma wave emissions, and magnetic fields with a substantial radial component is illustrated. Mechanisms that may be responsible for the formation and maintenance of holes are suggested.

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