Journal article
Chorus Source Locations from VLF Poynting Flux Measurements with the Polar Spacecraft
Geophysical research letters, Vol.25(21), pp.4063-4066
11/01/1998
DOI: 10.1029/1998GL900071
Abstract
Previous studies have used indirect evidence to argue that whistler-mode chorus emissions are generated near the magnetic equator. In this paper a spatial survey of wave normals and Poynting vectors computed from three-component electric and magnetic field measurements is used to show that chorus is generated very close to the magnetic equator. One surprising result is that there are almost no chorus emissions propagating toward the magnetic equator, such as might be expected from high-latitude magnetospheric reflections. The absence of a reflected component indicates that the chorus is reabsorbed, probably by Landau damping, before returning to the magnetic equatorial plane.
Details
- Title: Subtitle
- Chorus Source Locations from VLF Poynting Flux Measurements with the Polar Spacecraft
- Creators
- M. J. LeDocq - Iowa UnivD. A. Gurnett - Iowa UnivG. B. Hospodarsky - Iowa Univ
- Resource Type
- Journal article
- Publication Details
- Geophysical research letters, Vol.25(21), pp.4063-4066
- Publisher
- American Geophysical Union
- DOI
- 10.1029/1998GL900071
- ISSN
- 0094-8276
- eISSN
- 1944-8007
- Language
- English
- Date published
- 11/01/1998
- Description audience
- PUBLIC
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984455267502771
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