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The Heliospheric Current Sheet and Plasma Sheet during Parker Solar Probe's First Orbit

hal.structure.identifierCentre d'étude spatiale des rayonnements [CESR]
dc.contributor.authorLAVRAUD, B.
dc.contributor.authorFARGETTE, N.
hal.structure.identifierCommissariat à l'énergie atomique et aux énergies alternatives [CEA]
dc.contributor.authorREVILLE, V.
hal.structure.identifierGSFC Laboratory for Extraterrestrial Physics
dc.contributor.authorSZABO, A.
dc.contributor.authorHUANG, J.
hal.structure.identifierSchool of Physics and Astronomy [Southampton]
dc.contributor.authorROUILLARD, A.
dc.contributor.authorVIALL, N.
hal.structure.identifierCentre de physique moléculaire optique et hertzienne [CPMOH]
dc.contributor.authorPHAN, T.
hal.structure.identifierHarvard-Smithsonian Center for Astrophysics [CfA]
dc.contributor.authorKASPER, J.
hal.structure.identifierUniversity of California [Berkeley] [UC Berkeley]
dc.contributor.authorBALE, S.
hal.structure.identifierSpace Sciences Laboratory [Berkeley] [SSL]
dc.contributor.authorBERTHOMIER, M.
hal.structure.identifierSpace Sciences Laboratory [Berkeley] [SSL]
dc.contributor.authorBONNELL, J.
dc.contributor.authorCASE, A.
dc.contributor.authorDUDOK DE WIT, T.
dc.contributor.authorEASTWOOD, J.
hal.structure.identifierInstitut de recherche en astrophysique et planétologie [IRAP]
dc.contributor.authorGENOT, V.
hal.structure.identifierSchool of Physics and Astronomy [Minneapolis]
dc.contributor.authorGOETZ, K.
hal.structure.identifierLaboratoire d'études spatiales et d'instrumentation en astrophysique = Laboratory of Space Studies and Instrumentation in Astrophysics [LESIA]
dc.contributor.authorGRITON, L.
hal.structure.identifierDepartment of Physics and Astronomy [Iowa City]
dc.contributor.authorHALEKAS, J.
dc.contributor.authorHARVEY, P.
dc.contributor.authorKIEOKAEW, R.
hal.structure.identifierGroupement de Recherche et d'Etudes en Gestion à HEC [GREGH]
dc.contributor.authorKLEIN, K.
hal.structure.identifierHarvard-Smithsonian Center for Astrophysics [CfA]
dc.contributor.authorKORRECK, K.
dc.contributor.authorKOULOUMVAKOS, A.
hal.structure.identifierSpace Sciences Laboratory [Berkeley] [SSL]
dc.contributor.authorLARSON, D.
hal.structure.identifierInstitut de recherche en astrophysique et planétologie [IRAP]
dc.contributor.authorLAVARRA, M.
hal.structure.identifierNational Research Council of Italy | Consiglio Nazionale delle Ricerche [CNR]
dc.contributor.authorLIVI, R.
hal.structure.identifierCentre d'étude spatiale des rayonnements [CESR]
dc.contributor.authorLOUARN, P.
dc.contributor.authorMACDOWALL, R.
hal.structure.identifierLaboratoire d'études spatiales et d'instrumentation en astrophysique = Laboratory of Space Studies and Instrumentation in Astrophysics [LESIA]
dc.contributor.authorMAKSIMOVIC, M.
dc.contributor.authorMALASPINA, D.
dc.contributor.authorNIEVES-CHINCHILLA, T.
dc.contributor.authorPINTO, R.
hal.structure.identifierCentre de Recherche en Transplantation et Immunologie [U1064 Inserm - CRTI]
dc.contributor.authorPOIRIER, N.
dc.contributor.authorPULUPA, M.
dc.contributor.authorRAOUAFI, N.
hal.structure.identifierNaval Research Laboratory [NRL]
dc.contributor.authorSTEVENS, M.
hal.structure.identifierAgence Spatiale Européenne = European Space Agency [ESA]
dc.contributor.authorTOLEDO-REDONDO, S.
hal.structure.identifierUniversity of California [Berkeley] [UC Berkeley]
dc.contributor.authorWHITTLESEY, P.
dc.date.issued2020-05-01
dc.identifier.issn2041-8205
dc.description.abstractEnWe present Heliospheric Current Sheet (HCS) and Plasma Sheet (HPS) observations during Parker Solar Probe's (PSP) first orbit around the Sun. We focus on the eight intervals that display a true sector boundary (TSB; based on suprathermal electron pitch angle distributions) with one or several associated current sheets. The analysis shows that (1) the main density enhancements in the vicinity of the TSB and HCS are typically associated with electron strahl dropouts, implying magnetic disconnection from the Sun, (2) the density enhancements are just about twice that in the surrounding regions, suggesting mixing of plasmas from each side of the HCS, (3) the velocity changes at the main boundaries are either correlated or anticorrelated with magnetic field changes, consistent with magnetic reconnection, (4) there often exists a layer of disconnected magnetic field just outside the high-density regions, in agreement with a reconnected topology, (5) while a few cases consist of short-lived density and velocity changes, compatible with short-duration reconnection exhausts, most events are much longer and show the presence of flux ropes interleaved with higher-β regions. These findings are consistent with the transient release of density blobs and flux ropes through sequential magnetic reconnection at the tip of the helmet streamer. The data also demonstrate that, at least during PSP's first orbit, the only structure that may be defined as the HPS is the density structure that results from magnetic reconnection, and its by-products, likely released near the tip of the helmet streamer.
dc.language.isoen
dc.publisherBristol : IOP Publishing
dc.title.enThe Heliospheric Current Sheet and Plasma Sheet during Parker Solar Probe's First Orbit
dc.typeArticle de revue
dc.identifier.doi10.3847/2041-8213/ab8d2d
dc.subject.halPlanète et Univers [physics]/Astrophysique [astro-ph]/Astrophysique stellaire et solaire [astro-ph.SR]
bordeaux.journalThe Astrophysical journal letters
bordeaux.pageL19
bordeaux.volume894
bordeaux.issue2
bordeaux.peerReviewedoui
hal.identifierhal-02750279
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02750279v1
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