Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996dps....28.2124b&link_type=abstract
American Astronomical Society, DPS meeting #28, #21.24; Bulletin of the American Astronomical Society, Vol. 28, p.1138
Astronomy and Astrophysics
Astronomy
Scientific paper
The measurements of electron density made by the PWS and PLS instruments on Galileo during its pass through the torus on December 7th, 1995, are compared with a model based on Voyager 1 measurements made in March 1979. Outside Io's orbit the plasma densities observed by Galileo are approximately a factor of two higher than the Voyager values. These higher densities are consistent with higher emission intensities observed by the Galileo UVS instrument (though detailed comparison depends on the electron temperature). Inside Io's orbit the Galileo density profile dropped sharply and remained at low values. This suggests that the ``ribbon'' region which is usually observed in ground-based images of the torus was either absent or much farther from Jupiter than usual.
Bagenal Fran
Crary F. F.
Frank Loya
Gurnett Donald
Kurth William
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