Physics
Scientific paper
Dec 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005agufmsh43a1156s&link_type=abstract
American Geophysical Union, Fall Meeting 2005, abstract #SH43A-1156
Physics
6030 Magnetic Fields And Magnetism, 6218 Jovian Satellites, 6221 Europa
Scientific paper
Galileo measurements acquired on several passes by Europa indicate the existence of an electrically conducting ocean in the interior of the satellite. As an inductive response to the time varying external magnetic field of the Jovian magnetosphere, the generated induced magnetic fields varying periodically and influencing the plasma interaction. We model the time dependent plasma interaction between Europa and the Jovian magnetosphere by solving simultaneously the MHD-flow problem and the internal induction problem. Therefore we develop a customized 3D-MHD model which accounts for the interaction of the magnetospheric plasma and magnetic field with the thin atmosphere and ionosphere of Europa. As a new effect compared to stationary models, we include periodic induced magnetic fields from the interior of the satellite. In addition to the induction by the time varying magnetospheric background field we also account for the periodic variations of the magnetospheric plasma at Europa which leads to a second order induction effect. We compare our results to the magnetic field data of the Galileo encounters with Europa.
Neubauer Fritz Manfred
Schilling Nico
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