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Article: In-situ observations of flux ropes formed in association with a pair of spiral nulls in magnetotail plasmas

TitleIn-situ observations of flux ropes formed in association with a pair of spiral nulls in magnetotail plasmas
Authors
Issue Date2016
Citation
Physics of Plasmas, 2016, v. 23, n. 5, article no. 052901 How to Cite?
AbstractSignatures of secondary islands are frequently observed in the magnetic reconnection regions of magnetotail plasmas. In this paper, magnetic structures with the secondary-island signatures observed by Cluster are reassembled by a fitting-reconstruction method. The results show three-dimensionally that a secondary island event can manifest the flux rope formed with an As-type null and a Bs-type null paired via their spines. We call this As-spine-Bs-like configuration the helically wrapped spine model. The reconstructed field lines wrap around the spine to form the flux rope, and an O-type topology is therefore seen on the plane perpendicular to the spine. Magnetized electrons are found to rotate on and cross the fan surface, suggesting that both the torsional-spine and the spine-fan reconnection take place in the configuration. Furthermore, detailed analysis implies that the spiral nulls and flux ropes were locally generated nearby the spacecraft in the reconnection outflow region, indicating that secondary reconnection may occur in the exhaust away from the primary reconnection site.
Persistent Identifierhttp://hdl.handle.net/10722/334429
ISSN
2023 Impact Factor: 2.0
2023 SCImago Journal Rankings: 0.708
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorGuo, Ruilong-
dc.contributor.authorPu, Zuyin-
dc.contributor.authorChen, Li Jen-
dc.contributor.authorFu, Suiyan-
dc.contributor.authorXie, Lun-
dc.contributor.authorWang, Xiaogang-
dc.contributor.authorDunlop, Malcolm-
dc.contributor.authorBogdanova, Yulia V.-
dc.contributor.authorYao, Zhonghua-
dc.contributor.authorXiao, Chijie-
dc.contributor.authorHe, Jiansen-
dc.contributor.authorFazakerley, Andrew N.-
dc.date.accessioned2023-10-20T06:48:04Z-
dc.date.available2023-10-20T06:48:04Z-
dc.date.issued2016-
dc.identifier.citationPhysics of Plasmas, 2016, v. 23, n. 5, article no. 052901-
dc.identifier.issn1070-664X-
dc.identifier.urihttp://hdl.handle.net/10722/334429-
dc.description.abstractSignatures of secondary islands are frequently observed in the magnetic reconnection regions of magnetotail plasmas. In this paper, magnetic structures with the secondary-island signatures observed by Cluster are reassembled by a fitting-reconstruction method. The results show three-dimensionally that a secondary island event can manifest the flux rope formed with an As-type null and a Bs-type null paired via their spines. We call this As-spine-Bs-like configuration the helically wrapped spine model. The reconstructed field lines wrap around the spine to form the flux rope, and an O-type topology is therefore seen on the plane perpendicular to the spine. Magnetized electrons are found to rotate on and cross the fan surface, suggesting that both the torsional-spine and the spine-fan reconnection take place in the configuration. Furthermore, detailed analysis implies that the spiral nulls and flux ropes were locally generated nearby the spacecraft in the reconnection outflow region, indicating that secondary reconnection may occur in the exhaust away from the primary reconnection site.-
dc.languageeng-
dc.relation.ispartofPhysics of Plasmas-
dc.titleIn-situ observations of flux ropes formed in association with a pair of spiral nulls in magnetotail plasmas-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1063/1.4948415-
dc.identifier.scopuseid_2-s2.0-84968928075-
dc.identifier.volume23-
dc.identifier.issue5-
dc.identifier.spagearticle no. 052901-
dc.identifier.epagearticle no. 052901-
dc.identifier.eissn1089-7674-
dc.identifier.isiWOS:000378427900065-

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