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dc.contributor.authorThrelfall, J.
dc.contributor.authorHood, A. W.
dc.contributor.authorBrowning, P. K.
dc.date.accessioned2018-01-29T11:30:08Z
dc.date.available2018-01-29T11:30:08Z
dc.date.issued2018-03-20
dc.identifier.citationThrelfall , J , Hood , A W & Browning , P K 2018 , ' Flare particle acceleration in the interaction of twisted coronal flux ropes ' , Astronomy & Astrophysics , vol. 611 , A40 . https://doi.org/10.1051/0004-6361/201731915en
dc.identifier.issn0004-6361
dc.identifier.otherPURE: 252128978
dc.identifier.otherPURE UUID: cd2cc741-e2b6-4a86-8924-c59b2bdaeab5
dc.identifier.otherBibCode: 2018arXiv180102907T
dc.identifier.otherBibCode: 2018A&A...611A..40T
dc.identifier.otherScopus: 85044273430
dc.identifier.otherORCID: /0000-0003-2620-2068/work/58055205
dc.identifier.otherWOS: 000427921100003
dc.identifier.urihttps://hdl.handle.net/10023/12627
dc.descriptionThe authors gratefully acknowledge the support of the U.K. Science and Technology Facilities Council. JT and AWH acknowledge the financial support of STFC through the Consolidated grant, ST/N000609/1, to the University of St Andrews. PKB acknowledges STFC support through ST/P000428/1 at the University of Manchester.en
dc.description.abstractAims. The aim of this work is to investigate and characterise non-thermal particle behaviour in a three-dimensional (3D) magnetohydrodynamical (MHD) model of unstable multi-threaded flaring coronal loops. Methods.  We have used a numerical scheme which solves the relativistic guiding centre approximation to study the motion of electrons and protons. The scheme uses snapshots from high resolution numerical MHD simulations of coronal loops containing two threads, where a single thread becomes unstable and (in one case) destabilises and merges with an additional thread. Results.  The particle responses to the reconnection and fragmentation in MHD simulations of two loop threads are examined in detail. We illustrate the role played by uniform background resistivity and distinguish this from the role of anomalous resistivity using orbits in an MHD simulation where only one thread becomes unstable without destabilising further loop threads. We examine the (scalable) orbit energy gains and final positions recovered at different stages of a second MHD simulation wherein a secondary loop thread is destabilised by (and merges with) the first thread. We compare these results with other theoretical particle acceleration models in the context of observed energetic particle populations during solar flares.
dc.language.isoeng
dc.relation.ispartofAstronomy & Astrophysicsen
dc.rights© 2018, ESO. This work has been made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at https://doi.org/10.1051/0004-6361/201731915en
dc.subjectPlasmasen
dc.subjectSun: coronaen
dc.subjectSun: magnetic fieldsen
dc.subjectSun: activityen
dc.subjectAcceleration of particlesen
dc.subjectQB Astronomyen
dc.subjectQC Physicsen
dc.subject3rd-NDASen
dc.subject.lccQBen
dc.subject.lccQCen
dc.titleFlare particle acceleration in the interaction of twisted coronal flux ropesen
dc.typeJournal articleen
dc.contributor.sponsorScience & Technology Facilities Councilen
dc.contributor.sponsorScience & Technology Facilities Councilen
dc.description.versionPostprinten
dc.contributor.institutionUniversity of St Andrews. Applied Mathematicsen
dc.identifier.doihttps://doi.org/10.1051/0004-6361/201731915
dc.description.statusPeer revieweden
dc.identifier.urlhttp://adsabs.harvard.edu/abs/2018arXiv180102907Ten
dc.identifier.urlhttps://arxiv.org/abs/1801.02907en
dc.identifier.grantnumberST/L005522/1en
dc.identifier.grantnumberST/N000609/1en


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