Journal article
Electron beams as the source of whistler-mode auroral hiss at Saturn
Geophysical research letters, Vol.37(9), L09102
05/2010
DOI: 10.1029/2010GL042980
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.
Details
- Title: Subtitle
- Electron beams as the source of whistler-mode auroral hiss at Saturn
- Creators
- A. J. Kopf - University of IowaD. A. Gurnett - University of IowaJ. D. Menietti - University of IowaP. Schippers - University of IowaC. S. Arridge - Birkbeck, University of LondonG. B. Hospodarsky - University of IowaW. S. Kurth - University of IowaS. Grimald - Université Toulouse III - Paul SabatierN. Andre - Université Toulouse III - Paul SabatierA. J. Coates - University College LondonM. K. Dougherty - Imperial College London
- Resource Type
- Journal article
- Publication Details
- Geophysical research letters, Vol.37(9), L09102
- Publisher
- Amer Geophysical Union
- DOI
- 10.1029/2010GL042980
- ISSN
- 0094-8276
- eISSN
- 1944-8007
- Number of pages
- 5
- Grant note
- ST/G007462/1 / STFC; UK Research & Innovation (UKRI); Science & Technology Facilities Council (STFC) 1356500 / NASA; National Aeronautics & Space Administration (NASA) ST/G007462/1 / Science and Technology Facilities Council; UK Research & Innovation (UKRI); Science & Technology Facilities Council (STFC) PP/D00084X/1 / UK Space Agency Science and Technology Facilities Council (STFC); UK Research & Innovation (UKRI); Science & Technology Facilities Council (STFC); Science and Technology Development Fund (STDF)
- Language
- English
- Date published
- 05/2010
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984455366802771
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