Physics – Plasma Physics
Scientific paper
Dec 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002jgra..107.1490k&link_type=abstract
Journal of Geophysical Research (Space Physics), Volume 107, Issue A12, pp. SMP 41-1, CiteID 1490, DOI 10.1029/2001JA005071
Physics
Plasma Physics
11
Magnetospheric Physics: Magnetosphere Interactions With Satellites And Rings, Planetology: Fluid Planets: Magnetospheres (2756), Planetology: Solar System Objects: Jovian Satellites, Space Plasma Physics: Kinetic And Mhd Theory, Space Plasma Physics: Numerical Simulation Studies
Scientific paper
The time-variable structure of Ganymede's magnetosphere is studied by means of resistive MHD simulations. Using the magnetometer measurements of the Galileo spacecraft in the first few Ganymede flybys as examples, we find that the plasma flow pattern inside the Ganymedian magnetosphere could be subject to significant changes. Furthermore, the boundary of the polar cap dividing the open magnetic field region from the closed magnetic field region could expand or contract as the Jovian magnetic field swings inward and outward. Such an effect could be related to the Hubble Space Telescope observations of large time variability of the atomic oxygen airglow near the polar regions of Ganymede.
Huen Ip Wing
Kopp Andreas
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