Thermal structure of the Jovian plasmasphere |
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| Authors: | S Machida A Nishida |
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| Institution: | Institute of Space and Aeronautical Science, University of Tokyo, Komaba, Meguro-ku, Tokyo 153, Japan |
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| Abstract: | An equation of heat transport in the Jovian magnetosphere is formulated and solved in the L range between 2 and 7. Sources of thermal energy include the heating associated with inward radial diffusion and a hypothetical heat supply originating from Io's dynamo action. The principal sink of the thermal energy is charge exchange in Io's hydrogen torus. In order to explain the density and temperature profile reported by Frank et al. (1976), the presence of the heat source at Io is essential and the density of the torus hydrogen has to be considerably lower than the value inferred from Lα observations by Carlson and Judge (1975). Radial diffusion represents the principal heating mechanism for plasma at very low L values. |
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