Physics
Scientific paper
Dec 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agufm.p51e1174s&link_type=abstract
American Geophysical Union, Fall Meeting 2009, abstract #P51E-1174
Physics
[5737] Planetary Sciences: Fluid Planets / Magnetospheres, [6207] Planetary Sciences: Solar System Objects / Comparative Planetology, [6218] Planetary Sciences: Solar System Objects / Jovian Satellites
Scientific paper
We investigate the temporal variations of the Jovian magnetospheric field at the Galilean satellites' positions and analyze possible inductive responses from the moons' interiors on the basis of classical electromagnetic theory. By using a magnetospheric model that includes contributions of Jupiter's internal field, the current sheet field and fields due to the magnetopause boundary currents, we deduce the corresponding amplitude spectra at each satellite. These spectra provide the strength of inducing signals at different periods for all magnetic components.Short excitation periods (~10 hours) occur due to the fast rotation of Jupiter with respect to the moons' orbital motion. Longer periods (~40 to 400 hours) arise from contributions of the magnetopause field and due to the eccentricity and inclination of the satellites' orbits. We also discuss suitable flyby configurations for future missions that could lead to a better understanding of the moons' interiors.
Neubauer Fritz Manfred
Saur J. S.
Seufert Michael
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