Expected immersion of Saturn's magnetosphere in the jovian magnetic tail

Details Expected immersion of Saturn's magnetosphere in the jovian magnetic tail Expected immersion of Saturn's magnetosphere in the jovian magnetic tail

Aug 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981natur.292..615g&link_type=abstract

Nature, vol. 292, Aug. 13, 1981, p. 615, 616.

Astronomy and Astrophysics

Astronomy

16

Interplanetary Magnetic Fields, Jupiter Atmosphere, Planetary Magnetic Fields, Planetary Magnetospheres, Plasma-Electromagnetic Interaction, Saturn Atmosphere, Astronomical Models, Astronomical Spectroscopy, Magnetic Flux, Satellite Observation, Solar Wind, Planets, Interaction, Saturn, Jupiter, Magnetosphere, Magnetotail, Data, Flux, Radiation, Kilometer Waves, Boundary Layers, Lyman-Alpha Radiation, Magnetic Properties, Electrodynamics, Pressure, Magnetic Fields, Wavelengths

Scientific paper

Voyager 2 approaches Saturn August 1981, after a possible encounter of the planet with the tail or wake of Jupiter. With the magnetic flux in the tail of phi being equal approximately to 2 x 10 to the 12th Wb, a simple model suggests that the tail is very long (7-15 AU) and wide enough (approximately 0.6 AU) to engulf Saturn. This could result in a sudden drop (by a factor of approximately 40) of the ram pressure on the magnetosphere of Saturn. The ensuing inflation of the magnetosphere may cause effects observable from Voyager 2 and/or earth-orbiting satellites, including a flare-up of kilometric radiation and enhancement of the Lyman-alpha limb brightening. Such events, if observed, could shed light on the magnetic and plasma nature of the jovian tail and on the electrodynamics of the Saturnian magnetosphere.

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