Spacecraft measurements constraining the spatial extent of a magnetopause reconnection X line

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dc.contributor.author Walsh, B. M.
dc.contributor.author Komar, C. M.
dc.contributor.author Pfau-Kempf, Y.
dc.date.accessioned 2017-09-14T09:57:50Z
dc.date.available 2021-12-17T22:02:51Z
dc.date.issued 2017-04-16
dc.identifier.citation Walsh , B M , Komar , C M & Pfau-Kempf , Y 2017 , ' Spacecraft measurements constraining the spatial extent of a magnetopause reconnection X line ' , Geophysical Research Letters , vol. 44 , no. 7 , pp. 3038-3046 . https://doi.org/10.1002/2017GL073379
dc.identifier.other PURE: 84375035
dc.identifier.other PURE UUID: 3a33e70f-a79c-4f00-9c16-52b22d7b4ac9
dc.identifier.other WOS: 000400186500009
dc.identifier.other Scopus: 85017497691
dc.identifier.other ORCID: /0000-0001-5793-7070/work/40596961
dc.identifier.uri http://hdl.handle.net/10138/224166
dc.description.abstract Multispacecraft measurements from the Time History of Events and Macroscale Interactions during Substorms (THEMIS) mission are used to probe the spatial extent of an X line at the dayside magnetopause. A case study from 21 April 2014 is presented where two THEMIS spacecraft have a near-simultaneous encounter with the equatorial dayside magnetopause separated by 3.9 Earth radii. Both spacecraft observe similar steady inflow conditions with southward interplanetary magnetic field and a high magnetic shear angle at the magnetopause (133 degrees) boundary. One spacecraft observes clear fluid and kinetic signatures of active magnetic reconnection, while the other spacecraft does not observe reconnection. The predicted location of reconnection across the magnetopause is found using several theoretical models and a Block Adaptive Tree Solarwind Roe-type Upwind Scheme (BATS-R-US) MHD simulation. Each model predicts a continuous X line passing close to the two spacecraft, suggesting both would observe reconnection, if active. Using the constraints of the multipoint measurements, the extent or length L of the reconnection is estimated to be 2.4L <5.2h in local time or 6L<14 R-E. en
dc.format.extent 9
dc.language.iso eng
dc.relation.ispartof Geophysical Research Letters
dc.rights unspecified
dc.rights.uri info:eu-repo/semantics/openAccess
dc.subject Reconnection
dc.subject Magnetopause
dc.subject FLUX-TRANSFER EVENTS
dc.subject INTERACTION OFMAGNETIC RECONNECTION
dc.subject KELVIN-HELMHOLTZ MODES
dc.subject MAGNETIC RECONNECTION
dc.subject DAYSIDE MAGNETOPAUSE
dc.subject EARTHS MAGNETOPAUSE
dc.subject SOUTHWARD IMF
dc.subject LOCAL TIME
dc.subject CUSP
dc.subject SIMULATIONS
dc.subject 114 Physical sciences
dc.title Spacecraft measurements constraining the spatial extent of a magnetopause reconnection X line en
dc.type Article
dc.contributor.organization Department of Physics
dc.contributor.organization Space Physics Research Group
dc.description.reviewstatus Peer reviewed
dc.relation.doi https://doi.org/10.1002/2017GL073379
dc.relation.issn 0094-8276
dc.rights.accesslevel openAccess
dc.type.version submittedVersion
dc.type.version publishedVersion

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