HR: 17:18h
AN: SM44A-07    [Abstracts]
TI: Magnetic Mapping of the Outer Jovian Magnetosphere Onto the Auroral Pattern.
AU: * Prang\e, R
EM: renee.prange@obspm.fr
AF: LESIA, Observatoire de Paris, 5 place Jules Janssen, Meudon, 92195, France
AU: Alexeev, I
EM: alexeev@dec1.sinp.msu.ru
AF: Skobeltsyn Institute of Nuclear Physics, Moscow State University, Moscow, 119992, Russian Federation
AU: Kalegaev, V
EM: klg@dec1.sinp.msu.ru
AF: Skobeltsyn Institute of Nuclear Physics, Moscow State University, Moscow, 119992, Russian Federation
AU: Bobrovnikov, S
EM: sergo@dec1.sinp.msu.ru
AF: Skobeltsyn Institute of Nuclear Physics, Moscow State University, Moscow, 119992, Russian Federation
AU: Pallier, L
EM: laurent.pallier@obspm.fr
AF: LESIA, Observatoire de Paris, 5 place Jules Janssen, Meudon, 92195, France
AU: Lamy, L
EM: laurent.lamy@obspm.fr
AF: LESIA, Observatoire de Paris, 5 place Jules Janssen, Meudon, 92195, France
AU: Belenkaya, E
EM: elena@dec1.sinp.msu.ru
AF: Skobeltsyn Institute of Nuclear Physics, Moscow State University, Moscow, 119992, Russian Federation
AB: We use a newly developped magnetic field model to map the outer Jovian magnetosphere down to the ionosphere. In addition to the usual terms representing the internal planetary field and the current disc contribution (both taken from the Connerney et al. (1998)'s VIP4 model), the model, derived from a terrestrial one, includes terms related to the magnetosphere/solar-wind interaction, and generated by magnetopause currents shielding the internal and current disc components, and by cross-tail currents and their closure currents on the magnetopause, as well as some partial penetration of the IMF. The distant magnetosphere region, from the magnetopause to the magnetodisc is mapped down along the magnetic field lines to the polar ionosphere, and compared to auroral features derived from UV images taken with the Hubble Space Telescope. We investigate the limit between corotating features and features fixed in a Sun-Jupiter magnetic frame of reference. We also check the mapping of polar cap boundary field lines against in-situ Ulysses measurements. The effect of the dynamical magnetosphere/solar-wind coupling on the polar auroral structure, and in particular on the main auroral oval and on the polar cap boundary is studied by varying the model input parameters.
DE: 2744 Magnetotail
DE: 2756 Planetary magnetospheres (5443, 5737, 6033)
DE: 5443 Magnetospheres (2756)
DE: 5737 Magnetospheres (2756)
SC: SPA-Magnetospheric Physics [SM]
MN: 2007 Fall Meeting