Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...328..358s&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 328, May 1, 1988, p. 358-372.
Astronomy and Astrophysics
Astrophysics
13
Centrifugal Force, Jupiter Atmosphere, Magnetospheric Instability, Planetary Magnetospheres, Plasma Diffusion, Space Plasmas, Atmospheric Models, Io, Ions, Radiation Belts
Scientific paper
A general model of centrifugally driven diffusion is formulated that incorporates the effects of the pressure gradient of a radiation belt ion population and includes a realistic precipitation loss rate of the radiation belt ions that takes on a spatially peaked form, leading to a spatially varying ionospheric conductivity. The model is applied specifically to Jupiter. Model solutions for the flux tube content of the radiation belt ion population are found to compare favorably with reported Voyager 1 observations of ions in the energy range 0.2-30 MeV. Solution profiles for the flux-tube content of the cool Iogenic ion population typically favor a gradient near L = 7.5 of between one-half and one-third of the value originally reported by Bagenal and Sullivan (1981) and Siscoe et al. (1981). The model solutions are characterized by unexpectedly low values of the precipitation parameter.
Mansergh Thorne Richard
Mei Yi
Summers Danny
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