Other
Scientific paper
Oct 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998p%26ss...46.1149n&link_type=abstract
Planetary and Space Science, Volume 46, Issue 9-10, p. 1149-1155.
Other
33
Scientific paper
This paper presents a concise review of our present understanding of the ionosphere of Titan and its interaction with the surrounding magnetosphere magnetosheath of Saturn, based on observational constraints and theoretical model calculations. A variety of different models, as well as the Voyager 1 radio occultation re-analysis, indicate a peak electron density of about 2.5-3.0×103 cm-3, at an altitude just below 1200 km, for a solar zenith angle of near 90°. Calculations predict that the ions near the electron density peak consist mainly of HCNH+ and other more complex hydrocarbon ions. The lack of observational constraints on the electron and ion temperatures leads to a wide range of possible values from the models, ranging from less than 1000 to nearly 10,000°K. The Voyager 1 plasma measurements in Titans wake, combined with model calculations, have been used to estimate that the outward fluxes from the tail are on the order of 2-7×106 cm-2 s-1, corresponding to a total ion loss rate on the order of 1025 s-1.
Cravens Thomas E.
Nagy Andrew F.
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