Comparative Analysis of the Vlasiator Simulations and MMS Observations of Multiple X-Line Reconnection and Flux Transfer Events.
FTE evolution
Magnetospheric Multiscale Mission
flux transfer events
global hybrid‐Vlasov Vlasiator simulations
magnetic reconnection
reconnection‐driven magnetic island dynamics
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:
Jul 2020
Jul 2020
Historique:
received:
13
09
2019
revised:
15
03
2020
accepted:
13
04
2020
entrez:
1
10
2020
pubmed:
2
10
2020
medline:
2
10
2020
Statut:
ppublish
Résumé
The Vlasiator hybrid-Vlasov code was developed to investigate global magnetospheric dynamics at ion-kinetic scales. Here we focus on the role of magnetic reconnection in the formation and evolution of magnetic islands at the low-latitude magnetopause, under southward interplanetary magnetic field conditions. The simulation results indicate that (1) the magnetic reconnection ion kinetics, including the Earthward pointing Larmor electric field on the magnetospheric side of an X-point and anisotropic ion distributions, are well-captured by Vlasiator, thus enabling the study of reconnection-driven magnetic island evolution processes, (2) magnetic islands evolve due to continuous reconnection at adjacent X-points, "coalescence" which refers to the merging of neighboring islands to create a larger island, "erosion" during which an island loses magnetic flux due to reconnection, and "division" which involves the splitting of an island into smaller islands, and (3) continuous reconnection at adjacent X-points is the dominant source of magnetic flux and plasma to the outer layers of magnetic islands resulting in cross-sectional growth rates up to + 0.3 R
Identifiants
pubmed: 32999805
doi: 10.1029/2019JA027410
pii: JGRA55800
pmc: PMC7507759
doi:
Types de publication
Journal Article
Langues
eng
Pagination
e2019JA027410Subventions
Organisme : Intramural NASA
ID : 80NSSC18K0999
Pays : United States
Organisme : Intramural NASA
ID : 80NSSC18K1363
Pays : United States
Informations de copyright
©2020. The Authors.
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