Afficher la notice abrégée

Direct Multipoint Observations Capturing the Reformation of a Supercritical Fast Magnetosonic Shock

dc.contributor.authorTURNER, D.L.
dc.contributor.authorWILSON, L.B.
dc.contributor.authorGOODRICH, K.A.
dc.contributor.authorMADANIAN, H.
dc.contributor.authorSCHWARTZ, S.J.
dc.contributor.authorLIU, T.Z.
dc.contributor.authorJOHLANDER, A.
dc.contributor.authorCAPRIOLI, D.
dc.contributor.authorCOHEN, I.J.
dc.contributor.authorGERSHMAN, D.
dc.contributor.authorHIETALA, H.
dc.contributor.authorWESTLAKE, J.H.
hal.structure.identifierLaboratoire d'Astrophysique de Bordeaux [Pessac] [LAB]
hal.structure.identifierInstitut de recherche en astrophysique et planétologie [IRAP]
dc.contributor.authorLAVRAUD, B.
hal.structure.identifierLaboratoire de Physique des Plasmas [LPP]
dc.contributor.authorLE CONTEL, O.
dc.contributor.authorBURCH, J.L.
dc.date.issued2021
dc.identifier.issn2041-8205
dc.description.abstractEnUsing multipoint Magnetospheric Multiscale (MMS) observations in an unusual string-of-pearls configuration, we examine in detail observations of the reformation of a fast magnetosonic shock observed on the upstream edge of a foreshock transient structure upstream of Earth's bow shock. The four MMS spacecraft were separated by several hundred kilometers, comparable to suprathermal ion gyroradius scales or several ion inertial lengths. At least half of the shock reformation cycle was observed, with a new shock ramp rising up out of the “foot” region of the original shock ramp. Using the multipoint observations, we convert the observed time-series data into distance along the shock normal in the shock's rest frame. That conversion allows for a unique study of the relative spatial scales of the shock's various features, including the shock's growth rate, and how they evolve during the reformation cycle. Analysis indicates that the growth rate increases during reformation, electron-scale physics play an important role in the shock reformation, and energy conversion processes also undergo the same cyclical periodicity as reformation. Strong, thin electron-kinetic-scale current sheets and large-amplitude electrostatic and electromagnetic waves are reported. Results highlight the critical cross-scale coupling between electron-kinetic- and ion-kinetic-scale processes and details of the nature of nonstationarity, shock-front reformation at collisionless, fast magnetosonic shocks.
dc.language.isoen
dc.publisherBristol : IOP Publishing
dc.title.enDirect Multipoint Observations Capturing the Reformation of a Supercritical Fast Magnetosonic Shock
dc.typeArticle de revue
dc.identifier.doi10.3847/2041-8213/abec78
dc.subject.halPhysique [physics]/Astrophysique [astro-ph]
dc.identifier.arxiv2104.01123
bordeaux.journalThe Astrophysical journal letters
bordeaux.pageL31
bordeaux.volume911
bordeaux.issue2
bordeaux.peerReviewedoui
hal.identifierhal-03203622
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-03203622v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=The%20Astrophysical%20journal%20letters&rft.date=2021&rft.volume=911&rft.issue=2&rft.spage=L31&rft.epage=L31&rft.eissn=2041-8205&rft.issn=2041-8205&rft.au=TURNER,%20D.L.&WILSON,%20L.B.&GOODRICH,%20K.A.&MADANIAN,%20H.&SCHWARTZ,%20S.J.&rft.genre=article


Fichier(s) constituant ce document

FichiersTailleFormatVue

Il n'y a pas de fichiers associés à ce document.

Ce document figure dans la(les) collection(s) suivante(s)

Afficher la notice abrégée