Properties of Magnetic Reconnection and FTEs on the Dayside Magnetopause With and Without Positive IMF Bx Component During Southward IMF

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dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorHoilijoki, Sannien_US
dc.contributor.authorGanse, Ursen_US
dc.contributor.authorSibeck, David G.en_US
dc.contributor.authorCassak, Paul A.en_US
dc.contributor.authorTurc, Lucileen_US
dc.contributor.authorBattarbee, Markusen_US
dc.contributor.authorFear, Robert C.en_US
dc.contributor.authorBlanco-Cano, Xochitlen_US
dc.contributor.authorDimmock, Andrewen_US
dc.contributor.authorKilpua, Emilia K.J.en_US
dc.contributor.authorJärvinen, Rikuen_US
dc.contributor.authorJuusola, Liisaen_US
dc.contributor.authorPfau-Kempf, Yannen_US
dc.contributor.authorPalmroth, Minnaen_US
dc.contributor.departmentDepartment of Electronics and Nanoengineeringen
dc.contributor.groupauthorTuija Pulkkinen Groupen
dc.contributor.organizationUniversity of Helsinkien_US
dc.contributor.organizationNASA Goddard Space Flight Centeren_US
dc.contributor.organizationWest Virginia Universityen_US
dc.contributor.organizationUniversity of Southamptonen_US
dc.contributor.organizationUniversidad Nacional Autónoma de Méxicoen_US
dc.contributor.organizationFinnish Meteorological Instituteen_US
dc.date.accessioned2019-08-15T08:24:00Z
dc.date.available2019-08-15T08:24:00Z
dc.date.embargoinfo:eu-repo/date/embargoEnd/2019-12-07en_US
dc.date.issued2019-06en_US
dc.description.abstractThis paper describes properties and behavior of magnetic reconnection and flux transfer events (FTEs) on the dayside magnetopause using the global hybrid-Vlasov code Vlasiator. We investigate two simulation runs with and without a sunward (positive) B x component of the interplanetary magnetic field (IMF) when the IMF is southward. The runs are two-dimensional in real space in the noon-midnight meridional (polar) plane and three-dimensional in velocity space. Solar wind input parameters are identical in the two simulations with the exception that the IMF is purely southward in one but tilted 45° toward the Sun in the other. In the purely southward case (i.e., without B x) the magnitude of the magnetosheath magnetic field component tangential to the magnetopause is larger than in the run with a sunward tilt. This is because the shock normal is perpendicular to the IMF at the equatorial plane, whereas in the other run the shock configuration is oblique and a smaller fraction of the total IMF strength is compressed at the shock crossing. Hence, the measured average and maximum reconnection rate are larger in the purely southward run. The run with tilted IMF also exhibits a north-south asymmetry in the tangential magnetic field caused by the different angle between the IMF and the bow shock normal north and south of the equator. Greater north-south asymmetries are seen in the FTE occurrence rate, size, and velocity as well; FTEs moving toward the Southern Hemisphere are larger in size and observed less frequently than FTEs in the Northern Hemisphere.en
dc.description.versionPeer revieweden
dc.format.extent4037-4048
dc.format.mimetypeapplication/pdfen_US
dc.identifier.citationHoilijoki, S, Ganse, U, Sibeck, D G, Cassak, P A, Turc, L, Battarbee, M, Fear, R C, Blanco-Cano, X, Dimmock, A, Kilpua, E K J, Järvinen, R, Juusola, L, Pfau-Kempf, Y & Palmroth, M 2019, ' Properties of Magnetic Reconnection and FTEs on the Dayside Magnetopause With and Without Positive IMF Bx Component During Southward IMF ', Journal of geophysical research: Space physics, vol. 124, no. 6, pp. 4037-4048 . https://doi.org/10.1029/2019JA026821en
dc.identifier.doi10.1029/2019JA026821en_US
dc.identifier.issn2169-9380
dc.identifier.issn2169-9402
dc.identifier.otherPURE UUID: 6a3809e3-dcd2-4db0-af86-86bbd0beef78en_US
dc.identifier.otherPURE ITEMURL: https://research.aalto.fi/en/publications/6a3809e3-dcd2-4db0-af86-86bbd0beef78en_US
dc.identifier.otherPURE LINK: http://www.scopus.com/inward/record.url?scp=85067403465&partnerID=8YFLogxKen_US
dc.identifier.otherPURE FILEURL: https://research.aalto.fi/files/35746722/ELEC_Hoilijoki_et_al_2019_Journal_of_Geophysical_Research_Space_Physics.pdfen_US
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/39688
dc.identifier.urnURN:NBN:fi:aalto-201908154733
dc.language.isoenen
dc.publisherWILEY-BLACKWELL PUBLISHING, INC
dc.relation.ispartofseriesJournal of geophysical research: Space physicsen
dc.relation.ispartofseriesVolume 124, issue 6en
dc.rightsopenAccessen
dc.subject.keywordflux transfer eventen_US
dc.subject.keywordhybrid-Vlasoven_US
dc.subject.keywordmagnetic reconnectionen_US
dc.subject.keywordmagnetopauseen_US
dc.subject.keywordnumerical modelingen_US
dc.titleProperties of Magnetic Reconnection and FTEs on the Dayside Magnetopause With and Without Positive IMF Bx Component During Southward IMFen
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi
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