Journal article
Survey of Saturn Whistler Mode Hiss Intensity
Journal of geophysical research. Space physics, Vol.124(6), pp.4266-4277
06/01/2019
DOI: 10.1029/2019JA026656
Abstract
We have conducted an extensive survey of whistler mode hiss emission at Saturn using nearly the complete data set from the Cassini Radio and Plasma Wave Science investigation. We distinguish the hiss emission by frequency and intensity threshold criteria. The survey includes all longitudes and latitudes >25 degrees for r < 10 R-S, limited to the availability of plasma density data. The results indicate that hiss intensity is highest at high latitude, and the level of intensity is larger than chorus by at least an order of magnitude. After a rapid increase in intensity starting near L = 13, the hiss intensity remains relatively constant extending to L > 100. The intensity of the hiss as a function of frequency has a shallow peak near 35 Hz but remains always in the range similar to 5 x 10(-5) nT(2) < I < similar to 10(-3) nT(2). These survey results will be important in modeling the scattering interactions of whistler mode emissions with electrons in the Saturn magnetosphere. Based on recent particle and field observations, sources of Saturn hiss occur on and near the footprints of field-aligned currents, plasma injections, and reconnected field lines.
Details
- Title: Subtitle
- Survey of Saturn Whistler Mode Hiss Intensity
- Creators
- J. D. Menietti - University of IowaT. F. Averkamp - University of IowaW. S. Kurth - University of Iowa
- Resource Type
- Journal article
- Publication Details
- Journal of geophysical research. Space physics, Vol.124(6), pp.4266-4277
- Publisher
- Amer Geophysical Union
- DOI
- 10.1029/2019JA026656
- ISSN
- 2169-9380
- eISSN
- 2169-9402
- Number of pages
- 12
- Grant note
- 14150 / JPL NNX16AI47G / NASA; National Aeronautics & Space Administration (NASA)
- Language
- English
- Date published
- 06/01/2019
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984455266702771
Metrics
1 Record Views