Computer Science
Scientific paper
Oct 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011epsc.conf..315c&link_type=abstract
EPSC-DPS Joint Meeting 2011, held 2-7 October 2011 in Nantes, France. http://meetings.copernicus.org/epsc-dps2011, p.315
Computer Science
Scientific paper
We investigate various aspects of Titan's upper atmosphere and lower exosphere based on the Ion Neutral Mass Spectrometer (INMS) data of the two strongly escaping species (CH4 and H2) acquired during close Titan flybys of Cassini from T5 to T71. We are specifically aimed at identifying possible evidences of energy deposition by charged particle precipitation from Saturn's magnetosphere. Both the investigations in a global average sense and the comparisons made between cases with distinct levels of particle precipitation have revealed the signatures of such a non-solar source in Titan's neutral upper atmosphere and lower exosphere. Our findings are two-fold. First, the considerable H2 variability in Titan's exosphere is difficult to interpret by solar inputs only. Second, to support the CH4 outflow on Titan as implied by the INMS data, a significant nonsolar source is required.
Cui Jiajia
Galand Marina
Koskinen Tommi T.
Lavvas Panayiotis
Müller-Wodarg C. F. I.
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