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Observations of Chorus at Saturn by Cassini (abstract)

    G. B. Hospodarsky, T. F. Averkamp, W. S. Kurth, D. A. Gurnett, M. K. Dougherty, O. Santolik

Planetary Radio Emissions VII, pp. 127-128, 2011/12/28

Proceedings of the 7th International Workshop on Planetary, Solar and Heliospheric Radio Emissions held at Graz, Austria, September 15–17, 2010

doi: 10.1553/PRE7s127

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doi:10.1553/PRE7s127


Abstract

The Cassini Radio and Plasma Wave instrument has detected whistler-mode chorus during many of its one hundred thirty-five orbits of Saturn. Similar to observations of chorus in Earth’s magnetosphere, the chorus at Saturn is found to always be propagating away from Saturn’s magnetic equator, suggesting a source near the magnetic equator. Unlike chorus at Earth, the chorus at Saturn is only observed below half the electron cyclotron frequency unless it is detected in association with a local plasma injection event. This work will expand our earlier survey of chorus observations from the first forty-five orbits of Cassini and discuss the similarities and differences of the two types of chorus detected at Saturn to observations of chorus at Earth and Jupiter.