Physics
Scientific paper
Sep 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982georl...9.1073c&link_type=abstract
Geophysical Research Letters, vol. 9, Sept. 1982, p. 1073-1076.
Physics
43
Charged Particles, Periodic Variations, Planetary Magnetospheres, Saturn Atmosphere, Space Plasmas, Electrons, Ions, Kilometric Waves, Planetary Rotation, Voyager 2 Spacecraft
Scientific paper
The present investigation is concerned with the first definitive evidence for charged particle modulations near the magnetic rotation period at Saturn. This periodicity is apparent in the ratios (and spectra) of low energy charged particles in the Saturnian magnetosphere. Most of the data presented were taken during the Voyager 2 outbound portion of the Saturn encounter. During this time the spacecraft was at high latitudes (approximately 30 deg) in the southern hemisphere of the Saturnian magnetosphere. The probe's trajectory was approximately along the dawn meridian at an essentially constant local time. The observation that the charged particle modulation is consistent with the Saturn Kilometric Radiation (SKR) period provides a basic input for the resolution of a puzzle which has existed ever since the discovery of the SKR modulation. The charged particle periodicity identified suggests that a basic asymmetry must exist in the Saturnian magnetosphere.
Carbary James F.
Krimigis Stamatios M.
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