Localized Magnetospheric Heating of Titan's Thermosphere

Details Localized Magnetospheric Heating of Titan's Thermosphere Localized Magnetospheric Heating of Titan's Thermosphere

Oct 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011epsc.conf.1532s&link_type=abstract

EPSC-DPS Joint Meeting 2011, held 2-7 October 2011 in Nantes, France. http://meetings.copernicus.org/epsc-dps2011, p.1532

Physics

Scientific paper

The vertical density profile of N2 and CH4 measured by Cassini's Ion Neutral Mass Spectrometer (INMS) indicates that the temperature of Titan's thermosphere is highly variable both spatially and temporally. Features that appear to be caused by strong localized heat sources ( 10-9 to 10-10 ergs cm-3 s-1) are frequently observed. We examine magnetospheric electron precipitation and frictional heating in discrete current layers to determine if the interaction between Titan's upper atmosphere and Saturn's magnetosphere is the source of localized heating. We also examine the time-scales of the observed localized heating to determine if prior configurations of Titan's induced magnetosphere are 'fossilized' in Titan's neutral atmosphere.

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