Tail reconnection in the global magnetospheric context

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Palmroth, Minna
dc.contributor.author Hoilijoki, Sanni
dc.contributor.author Juusola, Liisa
dc.contributor.author Pulkkinen, Tuija I.
dc.contributor.author Hietala, Heli
dc.contributor.author Pfau-Kempf, Yann
dc.contributor.author Ganse, Urs
dc.contributor.author Von Alfthan, Sebastian
dc.contributor.author Vainio, Rami
dc.contributor.author Hesse, Michael
dc.date.accessioned 2018-02-09T10:00:55Z
dc.date.available 2018-02-09T10:00:55Z
dc.date.issued 2017-11-28
dc.identifier.citation Palmroth , M , Hoilijoki , S , Juusola , L , Pulkkinen , T I , Hietala , H , Pfau-Kempf , Y , Ganse , U , Von Alfthan , S , Vainio , R & Hesse , M 2017 , ' Tail reconnection in the global magnetospheric context : Vlasiator first results ' Annales Geophysicae , vol 35 , no. 6 , pp. 1269-1274 . DOI: 10.5194/angeo-35-1269-2017 en
dc.identifier.issn 0992-7689
dc.identifier.issn 1432-0576
dc.identifier.other PURE UUID: 878478d3-2a33-4864-a8d7-252e963227ed
dc.identifier.other PURE ITEMURL: https://research.aalto.fi/en/publications/tail-reconnection-in-the-global-magnetospheric-context(878478d3-2a33-4864-a8d7-252e963227ed).html
dc.identifier.other PURE LINK: http://www.scopus.com/inward/record.url?scp=85036497119&partnerID=8YFLogxK
dc.identifier.other PURE FILEURL: https://research.aalto.fi/files/16812496/pulkkinen_et_al_angeo_35_1269_2017.pdf
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/29891
dc.description.abstract The key dynamics of the magnetotail have been researched for decades and have been associated with either three-dimensional (3-D) plasma instabilities and/or magnetic reconnection. We apply a global hybrid-Vlasov code, Vlasiator, to simulate reconnection self-consistently in the ion kinetic scales in the noon-midnight meridional plane, including both dayside and nightside reconnection regions within the same simulation box. Our simulation represents a numerical experiment, which turns off the 3-D instabilities but models ion-scale reconnection physically accurately in 2-D. We demonstrate that many known tail dynamics are present in the simulation without a full description of 3-D instabilities or without the detailed description of the electrons. While multiple reconnection sites can coexist in the plasma sheet, one reconnection point can start a global reconfiguration process, in which magnetic field lines become detached and a plasmoid is released. As the simulation run features temporally steady solar windinput, this global reconfiguration is not associated with sudden changes in the solar wind. Further, we show that lobe density variations originating from dayside reconnection may play an important role in stabilising tail reconnection. en
dc.format.extent 6
dc.format.extent 1269-1274
dc.format.mimetype application/pdf
dc.language.iso en en
dc.relation.ispartofseries Annales Geophysicae en
dc.relation.ispartofseries Volume 35, issue 6 en
dc.rights openAccess en
dc.subject.other Astronomy and Astrophysics en
dc.subject.other Geology en
dc.subject.other Atmospheric Science en
dc.subject.other Earth and Planetary Sciences (miscellaneous) en
dc.subject.other Space and Planetary Science en
dc.subject.other 1171 Geosciences en
dc.title Tail reconnection in the global magnetospheric context en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department University of Helsinki
dc.contributor.department Finnish Meteorological Institute
dc.contributor.department Department of Electronics and Nanoengineering
dc.contributor.department University of California at Los Angeles
dc.contributor.department CSC - IT Center for Science Ltd.
dc.contributor.department University of Turku
dc.contributor.department University of Bergen
dc.subject.keyword Astronomy and Astrophysics
dc.subject.keyword Geology
dc.subject.keyword Atmospheric Science
dc.subject.keyword Earth and Planetary Sciences (miscellaneous)
dc.subject.keyword Space and Planetary Science
dc.subject.keyword 1171 Geosciences
dc.identifier.urn URN:NBN:fi:aalto-201802091387
dc.identifier.doi 10.5194/angeo-35-1269-2017
dc.type.version publishedVersion

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