Journal article
Phase relations between energetic neutral atom intensities and kilometric radio emissions at Saturn
Journal of geophysical research. Space physics, Vol.115(A1), A01203
01/2010
DOI: 10.1029/2009JA014519
Abstract
The intensities of energetic neutral atoms (ENAs) from Saturn's ring current were cross-correlated with Saturn kilometric radiation (SKR, 100-400 kHz) to determine their phase relations. The cross correlations were obtained for three intervals in early 2007 when Cassini was at high northern latitudes and the Ion and Neutral Camera (INCA) could optimally view the entire ring current. During these intervals, the hydrogen, oxygen, and SKR signals all exhibited similar to 10.8 h periodicities. A consistent phase relation was not observed between the ENA and the SKR. Cross-correlation amplitudes in these intervals varied from 0.25 to 0.79, and the phase offsets varied from similar to 1 h to several hours and differed according to ENA species. Not only did the SKR and ENA signal show phase offsets, but the H and O signals also displayed offsets. That is, all periodicities at similar to 10.8 h had no consistent synchronization.
Details
- Title: Subtitle
- Phase relations between energetic neutral atom intensities and kilometric radio emissions at Saturn
- Creators
- J. F. Carbary - Johns Hopkins University Applied Physics LaboratoryD. G. Mitchell - Johns Hopkins University Applied Physics LaboratoryS. M. Krimigis - Johns Hopkins University Applied Physics LaboratoryD. A. Gurnett - University of IowaW. S. Kurth - University of Iowa
- Resource Type
- Journal article
- Publication Details
- Journal of geophysical research. Space physics, Vol.115(A1), A01203
- Publisher
- Amer Geophysical Union
- DOI
- 10.1029/2009JA014519
- ISSN
- 2169-9380
- eISSN
- 2169-9402
- Number of pages
- 9
- Grant note
- NASA Goddard Space Flight Center; National Aeronautics & Space Administration (NASA) Johns Hopkins University NNH06ZDA001N; 1356500 / NASA; National Aeronautics & Space Administration (NASA) NAS5-97271 / NASA Office of Space Science; National Aeronautics & Space Administration (NASA) NASA; National Aeronautics & Space Administration (NASA)
- Language
- English
- Date published
- 01/2010
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984455367202771
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