Auroral hiss observations at high magnetic latitudes at Saturn

Details Auroral hiss observations at high magnetic latitudes at Saturn Auroral hiss observations at high magnetic latitudes at Saturn

Dec 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufmsm23a1918h&link_type=abstract

American Geophysical Union, Fall Meeting 2010, abstract #SM23A-1918

Physics

[2704] Magnetospheric Physics / Auroral Phenomena, [2772] Magnetospheric Physics / Plasma Waves And Instabilities, [5706] Planetary Sciences: Fluid Planets / Aurorae, [6984] Radio Science / Waves In Plasma

Scientific paper

The orbit of the Cassini spacecraft at Saturn went to higher inclinations in mid 2006 to early 2007, and again in early 2008 to early 2009, allowing the spacecraft to obtain measurements at high magnetic latitudes (>35 degrees) and to investigate the Saturnian auroral zone. A variety of plasma and radio waves have been detected by the Radio and Plasma Wave Science (RPWS) investigation at these higher latitudes, including emissions similar to auroral hiss at the Earth. The RPWS Five-Channel Waveform Receiver (WFR) provides simultaneous waveforms from up to five separate sensors allowing wave normal and Poynting vector analysis to be performed on many of the low-frequency, high latitude plasma wave emissions. From the current Cassini data set, these emissions are always found to be propagating away "up" from Saturn. These emissions are sometimes observed in association with ion and electron beams, and may be important in understanding the auroral processes occurring at Saturn. A statistical survey of the RPWS plasma wave observations from these high latitude orbits will be presented.

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