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Saturn in Lyman α: A comparison of Cassini and Voyager observations

Sandel, B. R.; Quemerais, E.; Yelle, R. V. +2 more

We analyze Saturn Lyman α system scans observed by the Cassini/UVIS instrument probing non-auroral airglow emissions from Saturn's disk, the ring atmosphere and the Saturn hydrogen torus. We constrain variations in disk brightness with latitude and local time, relating them to models of Saturn's upper atmosphere. We compare these results with Voya…