The Jovian Space Environment for Outer Planet Missions

Details The Jovian Space Environment for Outer Planet Missions The Jovian Space Environment for Outer Planet Missions

Sep 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008epsc.conf...69g&link_type=abstract

European Planetary Science Congress 2008, Proceedings of the conference held 21-25 September, 2008 in Münster, Germany. Online a

Physics

Scientific paper

Jupiter is roughly 10 times the size of the Earth while its magnetic field is proportionally ~20 times larger than the Earth's. It is not surprising therefore that the energy and flux levels of trapped particles in the jovian system can be much higher than those at the Earth and, indeed, aside from the Sun are the highest in the Solar System. Likewise its effects on spacecraft are severe and require detailed knowledge of the jovian environment. This talk will review the status of current models of jovian radiation environment by providing an overview of the jovian magnetosphere (magnetic field, plasma torus/disc, and aurora). In particular, the Divine radiation model, GIRE (Galileo Interim Radiation Electron) model update, and Inner Belts update for electrons will be covered. The latest data on the statistical variations of electron environment with Rj at Jupiter will be reviewed and the new HIC (Heavy Ion Counter) model of high energy O, S, and C ions briefly discussed. Attempts at estimating the effects unique to Europa's and Ganymede's radiation environments and their interactions with Jupiter's magnetosphere will be covered. Finally, a summary of the outstanding radiation environment issues for Jupiter will be listed as a guide to future modelling efforts.

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