The Pioneer Venus Orbiter event of February 11, 1982 - Of cometary of solar origin?

Details The Pioneer Venus Orbiter event of February 11, 1982 - Of cometary of solar origin? The Pioneer Venus Orbiter event of February 11, 1982 - Of cometary of solar origin?

Dec 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985georl..12..859r&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 12, Dec. 1985, p. 859-861. Research supported by the University of Californi

Physics

3

Comets, Interplanetary Magnetic Fields, Magnetic Variations, Solar Wind, Helium, Magnetic Clouds, Pioneer Venus 1 Spacecraft, Venus (Planet), Venus, Pioneer Venus Orbiter, Pvo, Origin, Comets, Magnetic Fields, Sun, Helium, Solar Wind, Shape, Source, Analysis, Hypotheses

Scientific paper

On February 11, 1982, an unusual cusp-shaped temporal variation in the interplanetary magnetic field was detected by the Pioneer Venus orbiter. While variations of the helium content of the solar wind were detected on the preceding day, these changes had no obvious relationship to the occurrence of the cusp-shaped temporal variation in the IMF on February 11. In fact the solar wind the content was quite nominal on February 11. The magnetic variations were also quite unlike those previously reported to be magnetic clouds. Moreover, the scale size of the disturbance had to be smaller than 4 x 10 to the 6th km and thus of cometary dimensions rather than of dimensions usually found in solar initiated events. Thus, there seems to be no need to alter the original interpretation that the observations of Pioneer Venus on February 11, 1982 were consistent with the passage of a comet close to Venus.

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