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dc.contributor.authorBorissov, Alexei
dc.contributor.authorNeukirch, Thomas
dc.contributor.authorThrelfall, James William
dc.identifier.citationBorissov , A , Neukirch , T & Threlfall , J W 2016 , ' Particle acceleration in collapsing magnetic traps with a braking plasma jet ' , Solar Physics , vol. 291 , no. 5 , pp. 1385-1404 .
dc.identifier.otherPURE: 242724955
dc.identifier.otherPURE UUID: 63c59269-8411-44e6-a453-0e8e9cadff66
dc.identifier.otherScopus: 84973102989
dc.identifier.otherORCID: /0000-0002-7597-4980/work/34032276
dc.identifier.otherWOS: 000379828300006
dc.description.abstractCollapsing magnetic traps (CMTs) are one proposed mechanism for generating non-thermal particle populations in solar flares. CMTs occur if an initially stretched magnetic field structure relaxes rapidly into a lower-energy configuration, which is believed to happen as a by-product of magnetic reconnection. A similar mechanism for energising particles has also been found to operate in the Earth's magnetotail. One particular feature proposed to be of importance for particle acceleration in the magnetotail is that of a braking plasma jet, i.e. a localised region of strong flow encountering stronger magnetic field which causes the jet to slow down and stop. Such a feature has not been included in previously proposed analytical models of CMTs for solar flares. In this work we incorporate a braking plasma jet into a well studied CMT model for the first time. We present results of test particle calculations in this new CMT model. We observe and characterise new types of particle behaviour caused by the magnetic structure of the jet braking region, which allows electrons to be trapped both in the braking jet region and the loop legs. We compare and contrast the behaviour of particle orbits for various parameter regimes of the underlying trap by examining particle trajectories, energy gains and the frequency with which different types of particle orbit are found for each parameter regime.
dc.relation.ispartofSolar Physicsen
dc.rights© 2016, Springer Science+Business Media Dordrecht. This work is 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 /
dc.subjectFlares, energetic particlesen
dc.subjectEnergetic particles, electronsen
dc.subjectMagnetic reconnection, modelsen
dc.subjectQB Astronomyen
dc.subjectQC Physicsen
dc.titleParticle acceleration in collapsing magnetic traps with a braking plasma jeten
dc.typeJournal articleen
dc.contributor.sponsorScience & Technology Facilities Councilen
dc.contributor.institutionUniversity of St Andrews. Applied Mathematicsen
dc.contributor.institutionUniversity of St Andrews. School of Mathematics and Statisticsen
dc.description.statusPeer revieweden

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