Relativistic charged particle precipitation into Jupiter's sub-auroral atmosphere |
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Authors: | Bob Abel Richard M. Thorne |
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Affiliation: | a Olympic College, 1600 Chester Avenue, Bremerton, WA 98337-1699, USA b University of California at Los Angeles, Department Atmospheric Sciences, Los Angeles, CA 90095-1565, USA |
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Abstract: | Longitudinal variations of energetic charged particle precipitation into the jovian sub-auroral atmosphere are modeled based on weak diffusion scattering and variations in the local loss-cone size associated with asymmetries in the VIP-4 magnetic field model. Our scattering model solutions suggest that low latitude observations of enhanced H3+ and X-ray emissions are at least partially due to precipitating energetic particles. The correlation between model results and observations is best in the northern hemisphere at low L (1.5), where the surface magnetic field variation is largest and observations have the highest resolution. Weaker correlations in the southern hemisphere and at higher latitudes, particularly for H3+ emissions, are likely due to the presence of other energy sources, lack of resolution in the observations and limitations in the sub-auroral surface magnetic field model. |
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Keywords: | Jupiter Magnetosphere Particle precipitation |
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