Detection of Auroral Emissions from Callisto's Magnetic Footprint at Jupiter

Details Detection of Auroral Emissions from Callisto's Magnetic Footprint at Jupiter Detection of Auroral Emissions from Callisto's Magnetic Footprint at Jupiter

Oct 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011epsc.conf.1468c&link_type=abstract

EPSC-DPS Joint Meeting 2011, held 2-7 October 2011 in Nantes, France. http://meetings.copernicus.org/epsc-dps2011, p.1468

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Scientific paper

HST observations of Jupiter's aurora in a large campaign reveal several cases where the main oval emission appeared at unusually low latitudes, making it possible to search for the first time for auroral emissions from the magnetic footprint of Callisto without the overlapping bright emissions from the main oval. Several cases have been found where point-source emissions have now been detected from locations consistent with Callisto's magnetic footprint on Jupiter at a brightness of ten's of kilo- Rayleighs. These observations confirm that there is an electrodynamic interaction between Callisto and Jupiter's magnetospheric environment that is similar to those at Io, Europa, and Ganymede, which all have auroral footprints. The properties of the emissions and a comparison with other observations and theoretical expectations will be presented in this paper.

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