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On the origin of Saturn's outer auroral emission
Gérard, Jean-Claude; Grodent, Denis; Radioti, Aikaterini +1 more
Ultraviolet Hubble Space Telescope images reveal a faint but distinct auroral emission equatorward of the main ring of emission of Saturn's southern polar region. This outer auroral emission is only visible near the nightside limb for the strongly tilted viewing geometry achieved in January 2004. We model the limb-brightening amplification of this…
Ten years of Hubble Space Telescope observations of the variation of the Jovian satellites' auroral footprint brightness
Nichols, J. D.; Clarke, J. T.; Wannawichian, S.
During the past decade, FUV imaging of Jupiter's auroral region by the Hubble Space Telescope (HST) using two instruments, the Space Telescope Imaging Spectrograph (STIS) and the Advanced Camera for Surveys (ACS), has provided detailed information on the electrodynamic interaction between Io's, Ganymede's, and Europa's atmospheres and plasma in Ju…
Auroral signatures of flow bursts released during magnetotail reconnection at Jupiter
Bonfond, B.; Gérard, J. -C.; Grodent, D. +1 more
Recent studies based on Hubble Space Telescope (HST) data reported the presence of transient polar dawn spots in the Jovian auroral region and interpreted them as signatures of internally driven magnetic reconnection in the Jovian magnetotail. Even though an association of the polar dawn spots with the reconnection process has been suggested, it h…
The 3-D extent of the Io UV footprint on Jupiter
Bonfond, B.
The Io footprint (IFP) is the auroral signature of the electromagnetic interaction between Io and Jupiter's magnetosphere. It consists of several spots followed by an extended tail, which are located close to the feet of the magnetic field lines connecting Io to Jupiter. The size of the main spot is a controversial issue, and previously published …