Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981sci...212..231v&link_type=abstract
Science, vol. 212, Apr. 10, 1981, p. 231-234.
Astronomy and Astrophysics
Astronomy
29
Charged Particles, Cosmic Rays, Planetary Magnetospheres, Saturn Atmosphere, Voyager Project, Equatorial Atmosphere, Magnetospheric Electron Density, Magnetospheric Proton Density, Pioneer 11 Space Probe, Rhea (Astronomy), Titan, Saturn, Charged Particles, Magnetosphere, Voyager 1, Absorption, Satellites, Titan, Rhea, Observations, Flux, Spectrum, Structure, Radius, Trajectories, Energy, Data, Electrons, Protons, Intensity, Magnetic Fields, Magnetotail
Scientific paper
Voyager 1 provided the first look at Saturn's magnetotail and magnetosphere during relatively quiet interplanetary conditions. This report discusses the energetic particle populations of the outer magnetosphere of Saturn and absorption features associated with Titan and Rhea, and compares these observations with Pioneer 11 data of a year earlier. The trapped proton fluxes had soft spectra, represented by power laws in kinetic energy with an exponent of 7 in the outer magnetosphere and 9 in the magnetotail. Structure associated with the magnetotail was observed as close as 10 Saturn radii on the outbound trajectory. The proton and electron fluxes in the outer magnetosphere and in the magnetotail were variable and appeared to respond to changes in interplanetary conditions. Protons with energies greater than or approximately equal to 2 MeV had free access to the magnetosphere from interplanetary space and were not stably trapped outside about 7.5 Saturn radii.
Chenette D. L.
Cummings Alan C.
Garrard Thomas L.
Lal Niranjan
McDonald Frank B.
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