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Theoretical works on the main auroral UV emission at Jupiter suggest that the dawn region must be more powerful than the dusk one. However, a study made with the Hubble Space Telescope (HST) has shown the opposite, with a dusk region about 3 times more powerful than the dawn one.

In this thesis, new data obtained with UVS, the UV spectra-imager onboard Juno, are used to create comprehensive brightness maps of the 39 first perijoves of the spacecraft in both hemispheres. These main emission is then isolated on these maps using 4 different methods. Finally, the dusk and dawn regions are found, and the emitted power in these regions are computed. A statistical analyses of the power thus obtained is performed to found if the results from the HST study could be retrieved.

Juno --- Jupiter --- Aurora --- UV --- Physique, chimie, mathématiques & sciences de la terre > Aérospatiale, astronomie & astrophysique