Reflection and Refraction of the L-O Mode 5 kHz Saturn Narrowband Emission by the Magnetosheath.
Journal
Geophysical research letters
ISSN: 0094-8276
Titre abrégé: Geophys Res Lett
Pays: United States
ID NLM: 9882887
Informations de publication
Date de publication:
16 Mar 2022
16 Mar 2022
Historique:
received:
16
11
2021
revised:
10
02
2022
accepted:
12
02
2022
entrez:
21
7
2022
pubmed:
22
7
2022
medline:
22
7
2022
Statut:
ppublish
Résumé
The reflection-by-sheath mechanism of 5 kHz narrowband emissions (NB) at Saturn is confirmed by Cassini observations during several crossings of the magnetopause, which show that the 5 kHz NB can be prevented from escaping Saturn's magnetosphere. The L-O mode 5 kHz NB remained visible in areas of low plasma density but disappeared in regions of high plasma density. In three cases, NB disappeared immediately after the crossings of Saturn's magnetopause. A possible reflected NB event observed near the magnetosheath is discussed. This mechanism can help explain the 5 kHz NB observed at low latitudes outside the Enceladus plasma torus and their upper frequency limit variations. This mechanism significantly improves the current understanding of the 5 kHz NB.
Identifiants
pubmed: 35859935
doi: 10.1029/2021GL096990
pii: GRL63796
pmc: PMC9285440
doi:
Types de publication
Journal Article
Langues
eng
Pagination
e2021GL096990Informations de copyright
© 2022. The Authors.
Références
Geophys Res Lett. 2022 Mar 16;49(5):e2021GL096990
pubmed: 35859935