New Results on Titan's Ionosphere

Details New Results on Titan's Ionosphere New Results on Titan's Ionosphere

Oct 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007dps....39.6301w&link_type=abstract

American Astronomical Society, DPS meeting #39, #63.01; Bulletin of the American Astronomical Society, Vol. 39, p.542

Astronomy and Astrophysics

Astronomy

Scientific paper

The Titan ionosphere has proven to be chemically complex beyond our wildest dreams. Large positively and negatively charged organic ions have been identified at altitudes above 950 km altitude. The corresponding neutral chemistry is equally as complex and tracks the ion chemistry with a high degree of correlation. This suggests a major role for ion/neutral chemistry in the production of nascent aerosols in Titan's upper atmosphere. Based on a combined analysis of the Cassini Ion Neutral Mass Spectrometer and the Cassini Plasma Spectrometer data we use recent Titan flyby data to show that this complex chemistry maximizes at northern winter high latitudes with time periods where more than half the ionosphere has a mass to charge of over 100 Daltons and the positive ions extend at measurable densities to over 1000 Daltons.

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