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Solar Wind—Magnetosphere Coupling During Radial Interplanetary Magnetic Field Conditions: Simultaneous Multi‐Point Observations

hal.structure.identifierDepartment of Electromagnetism and Electronics [Murcia]
hal.structure.identifierInstitut de recherche en astrophysique et planétologie [IRAP]
dc.contributor.authorTOLEDO‐REDONDO, S
hal.structure.identifierSouthwest Research Institute [San Antonio] [SwRI]
dc.contributor.authorHWANG, K.-J.
hal.structure.identifierEuropean Space Research and Technology Centre [ESTEC]
dc.contributor.authorESCOUBET, C
hal.structure.identifierInstitut de recherche en astrophysique et planétologie [IRAP]
hal.structure.identifierLaboratoire d'Astrophysique de Bordeaux [Pessac] [LAB]
dc.contributor.authorLAVRAUD, B
hal.structure.identifierDepartment of Electromagnetism and Matter Physics [Granada] [EFM]
dc.contributor.authorFORNIELES, J
hal.structure.identifierLaboratoire de Physique des Plasmas [LPP]
dc.contributor.authorAUNAI, N
hal.structure.identifierSchool of Physics and Astronomy [Southampton]
dc.contributor.authorFEAR, R
hal.structure.identifierInstitut für Theoretische Physik IV [Bochum] [ITP4]
dc.contributor.authorDARGENT, J
hal.structure.identifierSchool of Space and Environment [Beijing]
dc.contributor.authorFU, H.
hal.structure.identifierSouthwest Research Institute [San Antonio] [SwRI]
hal.structure.identifierUTSA Department of Physics and Astronomy [San Antonio]
dc.contributor.authorFUSELIER, S. A.
hal.structure.identifierSouthwest Research Institute [San Antonio] [SwRI]
dc.contributor.authorGENESTRETI, K. J.
hal.structure.identifierSwedish Institute of Space Physics [Uppsala / Kiruna] [IRF]
dc.contributor.authorKHOTYAINTSEV, Yu. V.
hal.structure.identifierNational Space Science Center [Beijing] [NSSC]
dc.contributor.authorLI, W. Y.
hal.structure.identifierUniversity of Bergen [UiB]
dc.contributor.authorNORGREN, C
hal.structure.identifierSpace Sciences Laboratory [Berkeley] [SSL]
dc.contributor.authorPHAN, T. D.
dc.date.issued2021
dc.identifier.issn2169-9380
dc.description.abstractEnIn-situ spacecraft missions are powerful assets to study processes that occur in space plasmas. One of their main limitations, however, is extrapolating such local measurements to the global scales of the system. To overcome this problem at least partially, multi-point measurements can be used. There are several multi-spacecraft missions currently operating in the Earth's magnetosphere, and the simultaneous use of the data collected by them provides new insights into the large-scale properties and evolution of magnetospheric plasma processes. In this work, we focus on studying the Earth's magnetopause (MP) using a conjunction between the Magnetospheric Multiscale and Cluster fleets, when both missions skimmed the MP for several hours at distant locations during radial interplanetary magnetic field (IMF) conditions. The observed MP positions as a function of the evolving solar wind conditions are compared to model predictions of the MP. We observe an inflation of the magnetosphere (∼0.7 RE), consistent with magnetosheath pressure decrease during radial IMF conditions, which is less pronounced on the flank (urn:x-wiley:21699380:media:jgra56856:jgra56856-math-00010.2 RE). There is observational evidence of magnetic reconnection in the subsolar region for the whole encounter, and in the dusk flank for the last portion of the encounter, suggesting that reconnection was extending more than 15 RE. However, reconnection jets were not always observed, suggesting that reconnection was patchy, intermittent or both. Shear flows reduce the reconnection rate up to ∼30% in the dusk flank according to predictions, and the plasma β enhancement in the magnetosheath during radial IMF favors reconnection suppression by the diamagnetic drift.
dc.language.isoen
dc.publisherAmerican Geophysical Union/Wiley
dc.subject.enmagnetosphere
dc.subject.enmagnetic reconnection
dc.subject.enmagnetopause (MP)
dc.subject.ensolar wind
dc.title.enSolar Wind—Magnetosphere Coupling During Radial Interplanetary Magnetic Field Conditions: Simultaneous Multi‐Point Observations
dc.typeArticle de revue
dc.identifier.doi10.1029/2021JA029506
dc.subject.halPhysique [physics]/Physique [physics]/Physique de l'espace [physics.space-ph]
dc.subject.halPlanète et Univers [physics]/Sciences de la Terre/Géophysique [physics.geo-ph]
bordeaux.journalJournal of Geophysical Research Space Physics
bordeaux.pagee2021JA029506
bordeaux.volume126
bordeaux.issue11
bordeaux.peerReviewedoui
hal.identifierhal-03468620
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-03468620v1
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