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Exact Vlasov-Maxwell equilibria for asymmetric current sheets

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dc.contributor.authorAllanson, O.
dc.contributor.authorWilson, F.
dc.contributor.authorNeukirch, T.
dc.contributor.authorLiu, Yi-Hsin
dc.contributor.authorHodgson, J. D. B.
dc.date.accessioned2017-09-08T10:30:10Z
dc.date.available2017-09-08T10:30:10Z
dc.date.issued2017-09-16
dc.identifier.citationAllanson , O , Wilson , F , Neukirch , T , Liu , Y-H & Hodgson , J D B 2017 , ' Exact Vlasov-Maxwell equilibria for asymmetric current sheets ' , Geophysical Research Letters , vol. 44 , no. 17 , pp. 8685-8695 . https://doi.org/10.1002/2017GL074168en
dc.identifier.issn0094-8276
dc.identifier.otherPURE: 250702533
dc.identifier.otherPURE UUID: 7ca18adc-8da1-4679-979d-6b5486a63599
dc.identifier.otherScopus: 85029227423
dc.identifier.otherORCID: /0000-0002-7597-4980/work/36661750
dc.identifier.otherWOS: 000411702400002
dc.identifier.urihttps://hdl.handle.net/10023/11626
dc.descriptionFunding: Science and Technology Facilities Council Consolidated Grant Nos. ST/K000950/1 and ST/N000609/1 (O.A., T.N., J.D.B.H.and F.W.), the Science and Technology Facilities Council Doctoral Training Grant No. ST/K502327/1 (O.A. and J.D.B.H), the Natural Environment Research Council Grant No. NE/P017274/1 (Rad-Sat) (O.A.)en
dc.description.abstractThe NASA Magnetospheric Multiscale mission has made in-situ diffusion region and kinetic-scale resolution measurements of asymmetric magnetic reconnection for the first time [Burch et al., 2016], in the Earth’s magnetopause. The principal theoretical tool currently used to model collisionless asymmetric reconnection is particle-in-cell simulations. Many particle-in-cell simulations of asymmetric collisionless reconnection start from an asymmetric Harris-type magnetic field, but with distribution functions that are not exact equilibrium solutions of the Vlasov equation. We present new and exact equilibrium solutions of the Vlasov-Maxwell system that are self-consistent with one-dimensional asymmetric current sheets, with an asymmetric Harris-type magnetic field profile, plus a constant non-zero guide field. The distribution functions can be represented as a combination of four shifted Maxwellian distribution functions. This equilibrium describes a magnetic field configuration with more freedom than the previously known exact solution [Alpers, 1969], and has different bulk flow properties.
dc.format.extent11
dc.language.isoeng
dc.relation.ispartofGeophysical Research Lettersen
dc.rights© 2017. The Authors. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.en
dc.subjectVlasoc-Maxwell equilibriumen
dc.subjectExact solutionen
dc.subjectAsymmetric current sheeten
dc.subjectMagnetopauseen
dc.subjectInitial Conditionen
dc.subjectDistribution functionen
dc.subjectQA Mathematicsen
dc.subjectQB Astronomyen
dc.subjectQC Physicsen
dc.subjectT-DASen
dc.subject.lccQAen
dc.subject.lccQBen
dc.subject.lccQCen
dc.titleExact Vlasov-Maxwell equilibria for asymmetric current sheetsen
dc.typeJournal itemen
dc.contributor.sponsorScience & Technology Facilities Councilen
dc.contributor.sponsorScience & Technology Facilities Councilen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews. Applied Mathematicsen
dc.contributor.institutionUniversity of St Andrews. School of Mathematics and Statisticsen
dc.identifier.doihttps://doi.org/10.1002/2017GL074168
dc.description.statusPeer revieweden
dc.identifier.grantnumberST/K000950/1en
dc.identifier.grantnumberST/N000609/1en


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