Saturn's ring current and inner magnetosphere

Details Saturn's ring current and inner magnetosphere Saturn's ring current and inner magnetosphere

Aug 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981natur.292..724c&link_type=abstract

Nature, vol. 292, Aug. 20, 1981, p. 724-726.

Astronomy and Astrophysics

Astronomy

55

Planetary Magnetic Fields, Planetary Magnetospheres, Ring Currents, Saturn Atmosphere, Voyager 1 Spacecraft, Charged Particles, Magnetic Dipoles, Magnetic Field Configurations, Magnetically Trapped Particles, Particle Trajectories, Radiation Absorption, Rhea (Astronomy), Saturn, Magnetosphere, Magnetic Fields, Voyager 1, Observations, Models, Magnitude, Data, Trajectories, Dipole, Asymmetry, Charged Particles, Solar Wind, Currents, Diagrams, Motion, Absorption, Rhea, Comparisons

Scientific paper

The Voyager 1 magnetic field observations at Saturn are shown in a graph. The departure of the oberved magnetic field from the field of a dipole is considered. The observed field magnitude is appreciable less than that of the model dipole at small radial distances and greater than the model dipole in the more distant magnetosphere. These characteristics can be understood by introducing a model current system similar to a system originally applied to observations of the Jovian magnetic disk. Saturn's ring current has important implications for charged-particle motion in Saturn's magnetosphere, particularly the absorption of trapped radiation by its many satellites and rings. The absorption signature observed by the Voyager 1 cosmic ray experiment near the orbital position of Rhea illustrates well the effects of Saturn's ring current on charged particle trajectories.

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