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The multiple spots of the Ganymede auroral footprint

Bagenal, F.; Bonfond, B.; Clarke, J. T. +5 more

The interaction between the moons and the magnetosphere of giant planets sometimes gives rise to auroral signatures in the planetary ionosphere, called the satellite footprints. So far, footprints have been detected for Io, Europa, Ganymede, and Enceladus. These footprints are usually seen as single spots. However, the Io footprint, the brightest …