Local Time and SKR Phase Dependence of Saturn's Infrared H3+ Auroral Intensity

Details Local Time and SKR Phase Dependence of Saturn's Infrared H3+ Auroral Intensity Local Time and SKR Phase Dependence of Saturn's Infrared H3+ Auroral Intensity

Dec 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011agufmsm13f..06b&link_type=abstract

American Geophysical Union, Fall Meeting 2011, abstract #SM13F-06

Physics

[2704] Magnetospheric Physics / Auroral Phenomena

Scientific paper

Analysis of Cassini VIMS images of Saturn's H3+ aurorae reveals a strong dependence of the emitted intensity on local time with maxima in the post-dawn and post-dusk sectors. The post-dawn maximum is in agreement with measurements of auroral currents, UV aurora and SKR emission. The cause of the secondary, post-dusk peak has yet to be confirmed. The IR H3+ emission intensity is also dependent on SKR phase, in common with the UV aurora, and shows evidence of a rotating source. These relationships will be discussed using example VIMS images.

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