Abstract
We suggest that pairing of bouncing medium-energy electrons in the auroral upward current region close to the mirror points may play a role in driving the electron cyclotron maser instability to generate an escaping narrow band fine structure in the auroral kilometric radiation. We treat this mechanism in the gyrotron approximation, for simplicity using the extreme case of a weakly relativistic Dirac distribution instead the more realistic anisotropic Juttner distribution. Promising estimates of bandwidth, frequency drift and spatial location are given.
| Item Type: | Journal article |
|---|---|
| Form of publication: | Publisher's Version |
| Keywords: | Auroral kilometric radiation; electron pairing; gyroresonance emission; electron cyclotron maser (ECM); auroral (particle) acceleration |
| Faculties: | Geosciences > Department of Earth and Environmental Sciences |
| Subjects: | 500 Science > 550 Earth sciences and geology |
| URN: | urn:nbn:de:bvb:19-epub-90601-0 |
| ISSN: | 2296-424X |
| Language: | English |
| Item ID: | 90601 |
| Date Deposited: | 25. Jan 2022, 09:35 |
| Last Modified: | 12. Apr 2022, 13:39 |
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