Plasma observations near Saturn - Initial results from Voyager 2

Details Plasma observations near Saturn - Initial results from Voyager 2 Plasma observations near Saturn - Initial results from Voyager 2

Jan 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982sci...215..563b&link_type=abstract

Science, vol. 215, Jan. 29, 1982, p. 563-570.

Computer Science

109

Bow Waves, Planetary Magnetospheres, Saturn Atmosphere, Shock Waves, Solar Wind, Space Plasmas, Voyager 2 Spacecraft, Magnetopause, Magnetosheath, Magnetospheric Ion Density, Pioneer 11 Space Probe, Spectrum Analysis, Toroidal Plasmas, Voyager 1 Spacecraft, Characteristics, Spectrum, Hydrogen, Ionization, Time Dependency, Data, Satellites, Titan, Protons, Oxygen, Models, Saturn, Plasmas, Diagrams, Observations, Voyager 1, Voyager 2, Electrons, Ions, Comparisons, Size, Pioneer 11, Magnetosphere, Morphology,

Scientific paper

Results of plasma measurements made by Voyager 2 in the vicinity of Saturn are discussed and compared with those made by Pioneer 11 and Voyager 1 in a more limited range of latitudes. The initial bow shock crossing on the inbound trajectory closely agreed with the shock position inferred from the external ram pressure in the solar wind, although boundaries on the outbound pass were much further out than expected. Magnetospheric plasma observations reveal the presence of (1) shocked solar wind plasma in the magnetosheath between 30 and 22 Saturn radii; (2) a variable density region between 17 Saturn radii and the magnetopause; (3) an extended thick plasma sheet between 17 and 7 Saturn radii; and (4) an inner plasma torus probably originating from local sources. The ratio of heavy to light ions was observed to vary with distance to the equatorial plane in the dayside magnetosphere, with the heavy ions, probably O(+), more closely confined to the equatorial plane. The plasma data also account for the observed inner boundary of the neutral hydrogen torus discovered by Voyager 1.

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