Astronomy and Astrophysics – Astrophysics
Scientific paper
Nov 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981plap.rept..129b&link_type=abstract
In ESA Plasma Astrophys. p 129-134 (SEE N82-20030 10-88)
Astronomy and Astrophysics
Astrophysics
Jupiter Atmosphere, Planetary Magnetospheres, Plasma Dynamics, Voyager 1 Spacecraft, Io, Magnetohydrodynamic Waves, Neutral Sheets, Planetary Magnetic Fields, Plasma-Electromagnetic Interaction, Toruses
Scientific paper
The major Voyager findings concerning the low energy plasma in the Jovian magnetosphere are reviewed. The magnetosphere of Jupiter is unique in the solar system because of its large extent and rapid rotation, and because of the prodigious source of plasma provided by the satellite Io. Io injects 10 to the 29th power AMU/sec of freshly ionized material into the Jovian magnetosphere, producing a plasma dominated by heavy ions which are mostly various ionization states of oxygen and sulfur. This injected material is the source for the Io plasma torus, which is centered at Io's L-shell with a scale height of 1 Jovian radii and a mass of approximately 10 to the 36th power AMU. Ninety percent of the injected plasma diffuses outward, forming the Jovian magnetodisk. Io interacts with the plasma torus via the generation of an Alfven wave which propagates from Io into the ionosphere of Jupiter, carrying an energy flux of approximately 10 to the 12th power watts.
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