Narrowband Emissions within Saturn's Density Torus

Details Narrowband Emissions within Saturn's Density Torus Narrowband Emissions within Saturn's Density Torus

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004agufm.p51a1407f&link_type=abstract

American Geophysical Union, Fall Meeting 2004, abstract #P51A-1407

Physics

6275 Saturn, 2772 Plasma Waves And Instabilities

Scientific paper

The Cassini spacecraft made a close approach to Saturn on 1 July 2004, flying through the rings to within ~1.4 RS of the planet. The Cassini Radio and Plasma Wave Science (RPWS) investigation detected a clear emission at the upper hybrid resonance frequency that enabled the identification of a high density plasma torus surrounding Saturn, with peak plasma densities located at about 2.3 RS and a very abruptly decreasing plasma density at the torus inner edge. Emitted from this inner torus edge is a set of narrowband emissions similar in nature to those emitted from the terrestrial plasmapause. We will discuss the morphology of the narrowband emission observations, including their drifts in frequency as a function of time. We will also place these observations in context of ongoing theoretical analysis of narrowband emission from density gradients.

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