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Characteristics of Saturn's FUV aurora observed with the Space Telescope Imaging Spectrograph
Trauger, John T.; Gustin, Jacques; Clarke, John T. +3 more
We analyze a set of 15 FUV images obtained between October 1997 and January 2001 with the Hubble Space Telescope Imaging Spectrograph (STIS), providing a good view of Saturn's south auroral oval. It is found that the morphology and brightness distribution of the aurora are dynamical with variations occurring on time scales of hours or less. The da…
Energy-flux relationship in the FUV Jovian aurora deduced from HST-STIS spectral observations
Clarke, J. T.; Cowley, S. W. H.; Grodent, D. +3 more
Far ultraviolet spectral observations of the Jovian aurora have been made since 1997 with the Space Telescope Imaging Spectrograph (STIS) on board the Hubble Space Telescope at low spectral resolution. The combination of the spectral resolution with the intensity variation along the STIS slit provides information on the latitudinal variation of th…
A possible auroral signature of a magnetotail reconnection process on Jupiter
Clarke, J. T.; Waite, J. H.; Grodent, D. +2 more
Several theoretical models and in situ observations consistently suggest that the process of nightside reconnection associated with Earth's magnetospheric substorms is also taking place in the midnight tail region of Jupiter. We report the observation of a new auroral feature which takes the form of isolated spots appearing near the northern dusk-…
High-resolution far ultraviolet spectrum of electron-excited SO2
Ajello, Joseph; Bhardwaj, Anil; Vatti Palle, Prahlad
The high-resolution UV capabilities (λ/Δλ = 105) of the Hubble Space Telescope (HST) equipped with the Space Telescope Imaging Spectrograph (STIS) reflects a need for a high-resolution laboratory UV spectral data base for comparison with observation. For the purpose of interpreting the astronomical observations of Io by HST the electron…