Magnetic Reconnection Inside a Flux Rope Induced by Kelvin-Helmholtz Vortices.
Flux rope
Interlinked flux tubes
Kelvin‐Helmholtz vortex
Kelvin‐Helmholtz wave
Magnetopause
Reconnection
Journal
Journal of geophysical research. Space physics
ISSN: 2169-9380
Titre abrégé: J Geophys Res Space Phys
Pays: United States
ID NLM: 101661799
Informations de publication
Date de publication:
Apr 2020
Apr 2020
Historique:
received:
20
11
2019
revised:
29
01
2020
accepted:
03
03
2020
entrez:
28
7
2020
pubmed:
28
7
2020
medline:
28
7
2020
Statut:
ppublish
Résumé
On 5 May 2017, MMS observed a crater-type flux rope on the dawnside tailward magnetopause with fluctuations. The boundary-normal analysis shows that the fluctuations can be attributed to nonlinear Kelvin-Helmholtz (KH) waves. Reconnection signatures such as flow reversals and Joule dissipation were identified at the leading and trailing edges of the flux rope. In particular, strong northward electron jets observed at the trailing edge indicated midlatitude reconnection associated with the 3-D structure of the KH vortex. The scale size of the flux rope, together with reconnection signatures, strongly supports the interpretation that the flux rope was generated locally by KH vortex-induced reconnection. The center of the flux rope also displayed signatures of guide-field reconnection (out-of-plane electron jets, parallel electron heating, and Joule dissipation). These signatures indicate that an interface between two interlinked flux tubes was undergoing interaction, causing a local magnetic depression, resulting in an M-shaped crater flux rope, as supported by reconstruction.
Identifiants
pubmed: 32714734
doi: 10.1029/2019JA027665
pii: JGRA55617
pmc: PMC7375157
doi:
Types de publication
Journal Article
Langues
eng
Pagination
e2019JA027665Informations de copyright
©2020. The Authors.
Références
Phys Plasmas. 2010 Apr;17(4):
pubmed: 20838425
Nat Commun. 2017 Nov 17;8(1):1582
pubmed: 29150662
Science. 2016 Jun 3;352(6290):aaf2939
pubmed: 27174677
Geophys Res Lett. 2019 Jun 28;46(12):6287-6296
pubmed: 31598018
Nature. 2004 Aug 12;430(7001):755-8
pubmed: 15306802
Science. 2018 Dec 21;362(6421):1391-1395
pubmed: 30442767
Phys Rev Lett. 2016 Jul 1;117(1):015001
pubmed: 27419573
Phys Rev Lett. 2011 Oct 14;107(16):165007
pubmed: 22107399