Computer Science
Scientific paper
Oct 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007sci...318..237r&link_type=abstract
Science, Volume 318, Issue 5848, pp. 237- (2007).
Computer Science
12
Scientific paper
The New Horizons (NH) spacecraft observed Io’s aurora in eclipse on four occasions during spring 2007. NH Alice ultraviolet spectroscopy and concurrent Hubble Space Telescope ultraviolet imaging in eclipse investigate the relative contribution of volcanoes to Io’s atmosphere and its interaction with Jupiter’s magnetosphere. Auroral brightness and morphology variations after eclipse ingress and egress reveal changes in the relative contribution of sublimation and volcanic sources to the atmosphere. Brightnesses viewed at different geometries are best explained by a dramatic difference between the dayside and nightside atmospheric density. Far-ultraviolet aurora morphology reveals the influence of plumes on Io’s electrodynamic interaction with Jupiter’s magnetosphere. Comparisons to detailed simulations of Io’s aurora indicate that volcanoes supply 1 to 3% of the dayside atmosphere.
Alan Stern S.
Bagenal Fran
Cheng Andrew F.
Conard Steven J.
Davis Michael W.
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