Kopf, AJ;
Gurnett, DA;
Menietti, JD;
Schippers, P;
Arridge, CS;
Hospodarsky, GB;
Kurth, WS;
... Dougherty, MK; + view all
(2010)
Electron beams as the source of whistler-mode auroral hiss at Saturn.
Geophysical Research Letters
, 37
, Article L09102. 10.1029/2010GL042980.
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Abstract
Over the last three years, the Cassini spacecraft has been in a series of high inclination orbits, allowing investigation and measurements of Saturnian auroral phenomena. During this time, the Radio and Plasma Wave Science (RPWS) Investigation on Cassini detected low frequency whistler mode emissions propagating upward along the auroral field lines, much like terrestrial auroral hiss. Comparisons of RPWS data with Cassini Plasma Spectrometer (CAPS) plasma measurements during a high-latitude pass on 17 October 2008, show that intense upward moving electron beams with energies of a few hundred eV were associated with auroral hiss emissions. In this paper we show that these beams produce large growth rates for whistler-mode waves propagating along the resonance cone, similar to the generation of auroral hiss at Earth. Citation: Kopf, A. J., et al. (2010), Electron beams as the source of whistler-mode auroral hiss at Saturn, Geophys. Res. Lett., 37, L09102, doi: 10.1029/2010GL042980.
| Type: | Article |
|---|---|
| Title: | Electron beams as the source of whistler-mode auroral hiss at Saturn |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1029/2010GL042980 |
| Publisher version: | http://dx.doi.org/10.1029/2010GL042980 |
| Language: | English |
| Additional information: | Copyright 2010 by the American Geophysical Union |
| Keywords: | Incoherent Cherenkov radiation, VLF hiss, Byrd-station, Plasma, Satellite, Emissions, Generation, Saucers, Waves, Torus |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Space and Climate Physics |
| URI: | https://discovery.ucl.ac.uk/id/eprint/123915 |
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