Electrodynamic interaction of Ganymede with the Jovian magnetosphere and the radial spread of wake-associated disturbances

Details Electrodynamic interaction of Ganymede with the Jovian magnetosphere and the radial spread of wake-associated disturbances Electrodynamic interaction of Ganymede with the Jovian magnetosphere and the radial spread of wake-associated disturbances

May 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985jgr....90.3995t&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 90, May 1, 1985, p. 3995-4009.

Physics

8

Ganymede, Jupiter (Planet), Magnetospheric Instability, Planetary Magnetospheres, Plasma-Electromagnetic Interaction, Drift Rate, Electrodynamics, Kelvin-Helmholtz Instability, Magnetohydrodynamics, Radial Flow, Space Plasmas, Turbulent Wakes, Voyager 2 Spacecraft, Jupiter, Electrodynamics, Interactions, Satellites, Ganymede, Wakes, Magnetosphere, Voyager 2, Observations, Plasma, Kinematics, Electrons, Ions, Thermal Properties, Energy, Theoretical Studies, Hypotheses, Calculations, Boundaries, Flow, Corotat

Scientific paper

An investigation is conducted of the electrostatics of the interaction of Jupiter's satellite Ganymede with the Jovian plasma and the MHD stability of the resulting downstream cavity, taking into account an evaluation of the effect of distorted magnetic field models on the radial extent of the disturbances. The objective of the investigation is an understanding of the data which have been provided by Voyager 2 during its approach to Jupiter, giving attention to the Voyager 2 magnetometer experiment. It is concluded that the magnetic field distortion by itself is insufficient to explain the large radial extent of the observed wake encounters. Linear treatment of MHD equations showed that the Kelvin-Helmholtz instability is initiated at the plasma-cavity interface.

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