Physics
Scientific paper
Aug 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990jgr....9512005m&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 95, Aug. 1, 1990, p. 12005-12018. Research sponsored by DOE.
Physics
27
Planetary Magnetotails, Plasma Spectra, Solar Wind, Statistical Analysis, Venus Atmosphere, Current Sheets, Interplanetary Magnetic Fields, Ion Beams, Plasma Currents, Plasma Sheaths, Plasma-Particle Interactions
Scientific paper
A statistical characterization is made of the combined ion and magnetic field properties of the Venus magnetosheath and magnetotail, on the basis of plasma and magnetic field data from 223 Pioneer Venus orbits; no assumptions are made as to existing regions or their plasma and field characteristics. Plasma is found to flow tailward in all locations, and the magnetotail is highly draped. Weak magnetic field asymmetries are associated with the plasma dropouts. A high-E/q plasma population, previously interpreted as planetary-pickup ions, is found asymmetrically both within the tail and in the adjacent sheath. The Venus tail is filled with plasma that is primarily shocked solar wind, at fluxes that are sometimes undetectable; the tail coexists with a photoion population which generates asymmetries in the bulk plasma and magnetic field properties.
McComas David John
Mihalov John D.
Moore Kurt R.
Russell Christopher T.
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