Particle Acceleration by Magnetic Reconnection in Geospace.
Magnetic reconnection
Magnetosphere
Magnetospheric MultiScale
Particle acceleration
Journal
Space science reviews
ISSN: 0038-6308
Titre abrégé: Space Sci Rev
Pays: Netherlands
ID NLM: 100971458
Informations de publication
Date de publication:
2023
2023
Historique:
received:
04
05
2023
accepted:
05
10
2023
medline:
16
11
2023
pubmed:
16
11
2023
entrez:
16
11
2023
Statut:
ppublish
Résumé
Particles are accelerated to very high, non-thermal energies during explosive energy-release phenomena in space, solar, and astrophysical plasma environments. While it has been established that magnetic reconnection plays an important role in the dynamics of Earth's magnetosphere, it remains unclear how magnetic reconnection can further explain particle acceleration to non-thermal energies. Here we review recent progress in our understanding of particle acceleration by magnetic reconnection in Earth's magnetosphere. With improved resolutions, recent spacecraft missions have enabled detailed studies of particle acceleration at various structures such as the diffusion region, separatrix, jets, magnetic islands (flux ropes), and dipolarization front. With the guiding-center approximation of particle motion, many studies have discussed the relative importance of the parallel electric field as well as the Fermi and betatron effects. However, in order to fully understand the particle acceleration mechanism and further compare with particle acceleration in solar and astrophysical plasma environments, there is a need for further investigation of, for example, energy partition and the precise role of turbulence.
Identifiants
pubmed: 37969745
doi: 10.1007/s11214-023-01011-8
pii: 1011
pmc: PMC10630319
doi:
Types de publication
Journal Article
Review
Langues
eng
Pagination
75Informations de copyright
© The Author(s) 2023.
Déclaration de conflit d'intérêts
Competing InterestsThe authors have no conflict of interest to declare that is relevant to the content of this article.
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