Plasma observations near Jupiter - Initial results from Voyager 1

Details Plasma observations near Jupiter - Initial results from Voyager 1 Plasma observations near Jupiter - Initial results from Voyager 1

Jun 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979sci...204..987b&link_type=abstract

Science, vol. 204, June 1, 1979, p. 987-991.

Physics

52

Electron Plasma, Jupiter (Planet), Magnetospheric Ion Density, Plasma-Particle Interactions, Voyager Project, Flyby Missions, Heavy Ions, Ion Charge, Magnetic Equator, Magnetopause, Mass Ratios, Natural Satellites, Planetary Magnetic Fields, Planetary Rotation, Solar Wind, Plasmas, Observations, Jupiter, Voyager 1, Electrons, Ions, Satellites, Toruses, Spectrum, Density, Experiments

Scientific paper

Extensive measurements of low-energy positive ions and electrons were made throughout the Jupiter encounter of Voyager 1. The bow shock and magnetopause were crossed several times at distances consistent with variations in the upstream solar wind pressure measured on Voyager 2. During the inbound pass, the number density increased by six orders of magnitude between the innermost magnetopause crossing at approximately 47 Jupiter radii and near closest approach at approximately 5 Jupiter radii; the plasma flow during this period was predominately in the direction of corotation. Marked increases in number density were observed twice per planetary rotation, near the magnetic equator. Jupiterward of the Io plasma torus, a cold, corotating plasma was observed and the energy/charge spectra show well-resolved, heavy-ion peaks at mass-to-charge ratios equal to 8, 16, 32, and 64.

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