The distant interplanetary wake of Venus - Plasma observations from Pioneer Venus

Details The distant interplanetary wake of Venus - Plasma observations from Pioneer Venus The distant interplanetary wake of Venus - Plasma observations from Pioneer Venus

Nov 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982jgr....87.9045m&link_type=abstract

Journal of Geophysical Research, vol. 87, Nov. 1, 1982, p. 9045-9053.

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37

Interplanetary Medium, Solar Wind, Space Plasmas, Venus (Planet), Wakes, Hydrogen Ions, Oxygen Ions, Pioneer Venus Spacecraft, Spectrum Analysis

Scientific paper

Observations by the Pioneer Venus Orbiter plasma analyzer during passages through the Venus solar wind wake in June 1979 are reported. The spacecraft traveled 8-12 Venus radii behind the planet from the sun, detecting frequent, episodic disappearances of the plasma. The disappearance occurred inside the magnetotail, indicating a tattered, filamentary extension of the solar wind cavity. Positive oxygen ions were observed inside and outside of the magnetotail on some days, and were absent on others. The data indicate that the cavity contracts during high solar wind dynamic pressure, although the presence of 0(+) ions is not correlated well with the solar wind dynamic pressure. The most intense bursts originated from a flux of 10 million ions/sq cm per sec, with an 0(+) kinetic energy estimated to be 100,000-1,000,000 K.

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