Journal article
Ion cyclotron harmonics in the Saturn downward current auroral region
Journal of geophysical research. Space physics, Vol.116(A12), p.n/a
12/2011
DOI: 10.1029/2011JA017102
Abstract
Observations of intense upgoing electron beams and diffuse ion beams have been reported during a pass by Cassini in a downward current auroral region, nearby a source region of Saturn kilometric radiation. Using the Cassini Radio and Plasma Wave Science (RPWS) instrument low frequency waveform receiver and the Cassini Plasma Spectrometer Investigation (CAPS) instrument we have been able to identify ion cyclotron harmonic waves associated with the particle beams. These observations indicate similarities with terrestrial auroral emissions, and may be a source of wave-particle interactions. We fit the observed plasma electron distribution with drifting Maxwellians and perform a linear numerical analysis of plasma wave growth. The results are relevant to ion heating and possibly to electron acceleration.
Details
- Title: Subtitle
- Ion cyclotron harmonics in the Saturn downward current auroral region
- Creators
- J. D. Menietti - Univ Iowa, Dept Phys & Astron, Iowa City, IA 52242 USAP. Schippers - University of IowaO. Santolik - Acad Sci Czech Republic, Inst Atmospher Phys, Prague, Czech RepublicD. A. Gurnett - University of IowaF. Crary - SW Res Inst, San Antonio, TX 78229 USAA. J. Coates - Univ Coll London, Mullard Space Sci Lab, Dorking RH5 6NT, Surrey, England
- Resource Type
- Journal article
- Publication Details
- Journal of geophysical research. Space physics, Vol.116(A12), p.n/a
- Publisher
- Amer Geophysical Union
- DOI
- 10.1029/2011JA017102
- ISSN
- 2169-9380
- eISSN
- 2169-9402
- Number of pages
- 6
- Grant note
- ST/I002642/1 / UK Space Agency ST/H00260X/1 / STFC; UK Research & Innovation (UKRI); Science & Technology Facilities Council (STFC) 1415150; 1405851 / NASA through the Jet Propulsion Laboratory ST/H00260X/1 / Science and Technology Facilities Council; UK Research & Innovation (UKRI); Science & Technology Facilities Council (STFC)
- Language
- English
- Date published
- 12/2011
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984627238202771
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