Other
Scientific paper
Apr 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985georl..12..187i&link_type=abstract
Geophysical Research Letters (ISSN 0094-8276), vol. 12, April 1985, p. 187-190.
Other
6
Abundance, Interplanetary Magnetic Fields, Pioneer Venus 2 Spacecraft, Solar Wind, Space Plasmas, Spacecraft Instruments, Helium, Magnetometers, Pioneer Venus 1 Spacecraft
Scientific paper
The characteristics of a series of disturbances observed on February 10-11, 1982 by the plasma analyzer and the magnetometer on the Pioneer Venus Orbiter, obtained in the solar wind upstream of Venus are studied. It is concluded that the events were associated with the propagation of a solar wind disturbance of coronal origin and not with an encounter with a comet or other local outgassing object (Russel, et al., 1983). The plasma analyzer spectra clearly show the presence of increases in He(2) and they argue strongly against Russell, et al.'s interpretatation. The peak in magnetic field magnitude on February 11 is identified as the magnetic signature of a thin, trailing 'filament' at the end of a series of solar-initiated events. Corresponding increases in He(2) and magnetic field fluctuations were observed near earth by ISEE-3 about a day later, and this strongly supports the concept of a solar origin.
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