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Detailed Reference Information |
LeDocq, M.J., Gurnett, D.A. and Hospodarsky, G.B. (1998). Chorus source locations from VLF Poynting flux measurements with the Polar spacecraft. Geophysical Research Letters 25: doi: 10.1029/1998GL900071. issn: 0094-8276. |
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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. ¿ 1998 American Geophysical Union |
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Abstract |
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Keywords
Magnetospheric Physics, Magnetospheric Physics, Plasma waves and instabilities, Radio Science, Waves in plasma |
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Publisher
American Geophysical Union 2000 Florida Avenue N.W. Washington, D.C. 20009-1277 USA 1-202-462-6900 1-202-328-0566 service@agu.org |
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