Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007dps....39.0409s&link_type=abstract
American Astronomical Society, DPS meeting #39, #4.09; Bulletin of the American Astronomical Society, Vol. 39, p.415
Astronomy and Astrophysics
Astronomy
Scientific paper
During the New Horizons flyby of Jupiter in February 2007, the Alice UV spectrograph obtained numerous high-quality spectra of the Io plasma torus. As New Horizons flew down the Jovian magnetotail, the Alice instrument on that spacecraft was not able to observe the Io torus due to solar elongation constraints. However, a nearly identical Alice UVS instrument aboard the Rosetta spacecraft was able to observe the Io plasma torus and the Jovian aurora for a total of 378 hours between 27 February 2007 and 08 May 2007. Although there is no spatial information in the Rosetta Alice data (since Rosetta was near Mars, roughly 4.2 AU from Jupiter) these observations show the temporal variability of the Io torus and Jovian aurora on timescale of days to weeks. We present spectra of the Io plasma torus obtained from both Alice instruments, plasma composition derived from New Horizons Alice spectra, and a time series of emission intensity from Rosetta Alice.
A'Hearn Michael F.
Alan Stern S.
Bertaux Jean Loup
Feldman Paul D.
Gladstone Randall G.
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