FUSE Observations of Jovian Aurora at the Time of the New Horizons Flyby

Details FUSE Observations of Jovian Aurora at the Time of the New Horizons Flyby FUSE Observations of Jovian Aurora at the Time of the New Horizons Flyby

Dec 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agufmsm41b1664f&link_type=abstract

American Geophysical Union, Fall Meeting 2008, abstract #SM41B-1664

Physics

6220 Jupiter, 7549 Ultraviolet Emissions

Scientific paper

At the time of the New Horizons flyby of Jupiter on 28 February 2007, there was a five-day window of opportunity during which the Far Ultraviolet Spectroscopic Explorer (FUSE), despite the loss of three of its four reaction wheels, could be stably pointed at Jupiter's position on the sky. FUSE was an orbiting spectroscopic observatory capable of spectral resolution better than 0.4~Å for extended sources in the wavelength range 905--1187~Å, together with very high sensitivity to weak emissions. Three orbits of observations were obtained in a point-and-stare mode beginning at 16:50 UT on 02 March 2007 of which for the first two the FUSE 30" × 30" aperture was centered on the north polar aurora. During each orbit the count rate was constant with time indicating that the target remained fully in the aperture during the entire exposure. These spectra will be compared with those obtained by FUSE in October 2000, December 2000, and January 2001, in terms of FUV luminosity and derived H2 vibrational population. We will also place these data in the context of the ultraviolet images obtained by the Hubble Space Telescope one Jovian rotation before and one after the FUSE observations.

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