Search Publications
The search for a subsurface ocean in Ganymede with Hubble Space Telescope observations of its auroral ovals
Saur, Joachim; Simon, Sven; Neubauer, Fritz M. +11 more
We present a new approach to search for a subsurface ocean within Ganymede through observations and modeling of the dynamics of its auroral ovals. The locations of the auroral ovals oscillate due to Jupiter's time-varying magnetospheric field seen in the rest frame of Ganymede. If an electrically conductive ocean is present, the external time-vary…
Magnetosphere-ionosphere mapping at Jupiter: Quantifying the effects of using different internal field models
Bunce, Emma J.; Khurana, Krishan K.; Kivelson, Margaret G. +5 more
The lack of global field models accurate beyond the inner magnetosphere (<30 RJ) makes it difficult to relate Jupiter's polar auroral features to magnetospheric source regions. We recently developed a model that maps Jupiter's equatorial magnetosphere to the ionosphere using a flux equivalence calculation that requires equal flux at …