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| Titel |
Phase space holes and elementary radiation events |
| VerfasserIn |
R. Pottelette, J. Pickett |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1023-5809
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| Digitales Dokument |
URL |
| Erschienen |
In: Nonlinear Processes in Geophysics ; 14, no. 6 ; Nr. 14, no. 6 (2007-11-26), S.735-742 |
| Datensatznummer |
250012309
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| Publikation (Nr.) |
 copernicus.org/npg-14-735-2007.pdf |
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| Zusammenfassung |
| Using high-time resolution measurements from the FAST and
CLUSTER spacecraft we analyze different types of fine frequency structures
of Auroral Kilometric Radiation (AKR). Based on the results from previous
numerical simulations, we emphasize that the recorded frequency structures
are the ones which are expected to occur on the low- and high-potential
sides of an accelerating double layer. Electron holes producing steep
perpendicular velocity gradients on the horseshoe velocity distribution
function appear to be responsible for generating AKR fine-frequency
structures. However, both ion and electron hole dynamics seem to play a
major role in the generation of the subtle, fine structures moving across
the radiation spectrum. |
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