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On the electron agyrotropy during rapid asymmetric magnetic island coalescence in presence of a guide field
Vise andre og tillknytning
2016 (engelsk)Inngår i: Geophysical Research Letters, ISSN 0094-8276, E-ISSN 1944-8007, Vol. 43, nr 15, s. 7840-7849Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

We present an analysis of the properties of the electron velocity distribution during island coalescence in asymmetric reconnection with and without guide field. In a previous study, three main domains were identified, in the case without guide field, as X, D, and M regions featuring different reconnection evolutions. These regions are also identified here in the case with guide field. We study the departure from isotropic and gyrotropic behavior by means of different robust detection algorithms proposed in the literature. While in the case without guide field these metrics show an overall agreement, when the guide field is present, a discrepancy in the agyrotropy within some relevant regions is observed, such as at the separatrices and inside magnetic islands. Moreover, in light of the new observations from the Multiscale MagnetoSpheric mission, an analysis of the electron velocity phase-space in these domains is presented.

sted, utgiver, år, opplag, sider
Blackwell Publishing, 2016. Vol. 43, nr 15, s. 7840-7849
Emneord [en]
Asymmetric magnetic island coalescence with and without guide field, Electron anisotropy and agyrotropy in asymmetric magnetic reconnection, Fully kinetic simulation of asymmetric magnetic reconnection at the dayside magnetopause
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Identifikatorer
URN: urn:nbn:se:kth:diva-194013DOI: 10.1002/2016GL070195ISI: 000383290300007Scopus ID: 2-s2.0-84981301325OAI: oai:DiVA.org:kth-194013DiVA, id: diva2:1037638
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QC 20161017

Tilgjengelig fra: 2016-10-17 Laget: 2016-10-14 Sist oppdatert: 2017-11-29bibliografisk kontrollert

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