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Perpendicular Current Reduction Caused by Cold Ions of Ionospheric Origin in Magnetic Reconnection at the Magnetopause: Particle‐in‐Cell Simulations and Spacecraft Observations

hal.structure.identifierDepartamento de Física [Murcia]
dc.contributor.authorTOLEDO‐REDONDO, Sergio
hal.structure.identifierLaboratoire de Physique des Plasmas [LPP]
hal.structure.identifierInstitut de recherche en astrophysique et planétologie [IRAP]
dc.contributor.authorDARGENT, Jérémy
hal.structure.identifierLaboratoire de Physique des Plasmas [LPP]
dc.contributor.authorAUNAI, Nicolas
hal.structure.identifierLaboratoire d'Astrophysique de Bordeaux [Pessac] [LAB]
dc.contributor.authorLAVRAUD, Benoit
hal.structure.identifierSwedish Institute of Space Physics [Uppsala / Kiruna] [IRF]
dc.contributor.authorANDRÉ, Mats
hal.structure.identifierSwedish Institute of Space Physics [Uppsala / Kiruna] [IRF]
hal.structure.identifierNational Space Science Center [Beijing] [NSSC]
dc.contributor.authorLI, Wenya
hal.structure.identifierNASA Goddard Space Flight Center [GSFC]
dc.contributor.authorGILES, Barbara
hal.structure.identifierKTH Royal Institute of Technology [Stockholm] [KTH]
dc.contributor.authorLINDQVIST, Per‐arne
hal.structure.identifierUniversity of Colorado [Boulder]
dc.contributor.authorERGUN, Robert
hal.structure.identifierDepartment of Earth, Planetary and Space Sciences [Los Angeles] [EPSS]
dc.contributor.authorRUSSELL, Christopher
hal.structure.identifierSouthwest Research Institute [San Antonio] [SwRI]
dc.contributor.authorBURCH, James
dc.date.issued2018
dc.identifier.issn0094-8276
dc.description.abstractEnCold ions of ionospheric origin are present throughout the Earth's magnetosphere, including the dayside magnetopause, where they modify the properties of magnetic reconnection, a major coupling mechanism at work between the magnetosheath and the magnetosphere. We present Magnetospheric MultiScale (MMS) spacecraft observations of the reconnecting magnetopause with different amounts of cold ions and show that their presence reduces the Hall term in the Ohm's law. Then, we compare two particle-in-cell simulations, with and without cold ions on the magnetospheric side. The cold ions remain magnetized inside the magnetospheric separatrix region, leading to the reduction of the perpendicular currents associated with the Hall effect. Moreover, this reduction is proportional to the relative number density of cold ions. And finally, the Hall electric field peak is reduced along the magnetospheric separatrix owing to cold ions. This should have an effect on energy conversion by reconnection from electromagnetic fields to kinetic energy of the particles
dc.language.isoen
dc.publisherAmerican Geophysical Union
dc.title.enPerpendicular Current Reduction Caused by Cold Ions of Ionospheric Origin in Magnetic Reconnection at the Magnetopause: Particle‐in‐Cell Simulations and Spacecraft Observations
dc.typeArticle de revue
dc.identifier.doi10.1029/2018GL079051
dc.subject.halPlanète et Univers [physics]/Sciences de la Terre/Géophysique [physics.geo-ph]
dc.subject.halPhysique [physics]/Physique [physics]/Physique des plasmas [physics.plasm-ph]
bordeaux.journalGeophysical Research Letters
bordeaux.page10,033-10,042
bordeaux.volume45
bordeaux.issue19
bordeaux.peerReviewedoui
hal.identifierhal-03321020
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-03321020v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Geophysical%20Research%20Letters&rft.date=2018&rft.volume=45&rft.issue=19&rft.spage=10,033-10,042&rft.epage=10,033-10,042&rft.eissn=0094-8276&rft.issn=0094-8276&rft.au=TOLEDO%E2%80%90REDONDO,%20Sergio&DARGENT,%20J%C3%A9r%C3%A9my&AUNAI,%20Nicolas&LAVRAUD,%20Benoit&ANDR%C3%89,%20Mats&rft.genre=article


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