Journal article
Survey of Saturn Z-mode emission
Journal of geophysical research. Space physics, Vol.120(8), pp.6176-6187
08/2015
DOI: 10.1002/2015JA021426
Abstract
Because of the role of Z-mode emission in the diffusive scattering and resonant acceleration of electrons, we conduct a survey of intensity in the Saturn inner magnetosphere. Z mode is primarily observed as 5kHz narrowband emission in the lower density regions where the ratio of cyclotron to plasma frequency, f(c)/f(p)>1 to which we limit this study. This occurs at Saturn along the inner edge of the Enceladus torus near the equator and at higher latitudes. We present profiles and parametric fits of intensity as a function of frequency, radius, latitude, and local time. The magnetic field intensity levels are lower than chorus, but the electric field intensities are comparable. We conclude that Z-mode wave-particle interactions may make a significant contribution to electron acceleration in the inner magnetosphere of Saturn, supplementing acceleration produced by chorus emission.
Details
- Title: Subtitle
- Survey of Saturn Z-mode emission
- Creators
- J. D. Menietti - University of IowaT. F. Averkamp - University of IowaS. -Y Ye - University of IowaR. B. Horne - British Antarctic SurveyE. E. Woodfield - British Antarctic SurveyY. Y. Shprits - University of California, Los AngelesD. A. Gurnett - University of IowaA. M. Persoon - University of IowaJan-Erik Wahlund - Swedish Institute of Space Physics
- Resource Type
- Journal article
- Publication Details
- Journal of geophysical research. Space physics, Vol.120(8), pp.6176-6187
- DOI
- 10.1002/2015JA021426
- ISSN
- 2169-9402
- eISSN
- 2169-9402
- Language
- English
- Date published
- 08/2015
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984627216102771
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