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.
Dokumententyp: | Zeitschriftenartikel |
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Publikationsform: | Publisher's Version |
Keywords: | Auroral kilometric radiation; electron pairing; gyroresonance emission; electron cyclotron maser (ECM); auroral (particle) acceleration |
Fakultät: | Geowissenschaften > Department für Geo- und Umweltwissenschaften |
Themengebiete: | 500 Naturwissenschaften und Mathematik > 550 Geowissenschaften, Geologie |
URN: | urn:nbn:de:bvb:19-epub-90601-0 |
ISSN: | 2296-424X |
Sprache: | Englisch |
Dokumenten ID: | 90601 |
Datum der Veröffentlichung auf Open Access LMU: | 25. Jan. 2022, 09:35 |
Letzte Änderungen: | 12. Apr. 2022, 13:39 |