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dc.contributor.authorThrelfall, J.
dc.contributor.authorReid, J.
dc.contributor.authorHood, A. W.
dc.date.accessioned2021-08-17T09:30:16Z
dc.date.available2021-08-17T09:30:16Z
dc.date.issued2021-08-16
dc.identifier274005632
dc.identifier432fcf1d-01ee-4d86-a132-9d8e73d73775
dc.identifier85112730094
dc.identifier85112730094
dc.identifier000686638600001
dc.identifier.citationThrelfall , J , Reid , J & Hood , A W 2021 , ' Can multi-threaded flux tubes in coronal arcades support a magnetohydrodynamic avalanche? ' , Solar Physics , vol. 296 , no. 8 , 120 . https://doi.org/10.1007/s11207-021-01865-7en
dc.identifier.issn0038-0938
dc.identifier.otherORCID: /0000-0003-2620-2068/work/98784972
dc.identifier.urihttps://hdl.handle.net/10023/23785
dc.descriptionFunding: The authors gratefully acknowledge the financial support of STFC through the Consolidated grant, ST/S000402/1, to the University of St Andrews. J. Threlfall is grateful for support from the Division of Games Technology and Mathematics at Abertay University. A.W. Hood acknowledges support from ERC Synergy grant “The Whole Sun” (810218).en
dc.description.abstractMagnetohydrodynamic (MHD) instabilities allow energy to be released from stressed magnetic fields, commonly modelled in cylindrical flux tubes linking parallel planes, but, more recently, also in curved arcades containing flux tubes with both footpoints in the same photospheric plane. Uncurved cylindrical flux tubes containing multiple individual threads have been shown to be capable of sustaining an MHD avalanche, whereby a single unstable thread can destabilise many. We examine the properties of multi-threaded coronal loops, wherein each thread is created by photospheric driving in a realistic, curved coronal arcade structure (with both footpoints of each thread in the same plane). We use three-dimensional MHD simulations to study the evolution of single- and multi-threaded coronal loops, which become unstable and reconnect, while varying the driving velocity of individual threads. Experiments containing a single thread destabilise in a manner indicative of an ideal MHD instability and consistent with previous examples in the literature. The introduction of additional threads modifies this picture, with aspects of the model geometry and relative driving speeds of individual threads affecting the ability of any thread to destabilise others. In both single- and multi-threaded cases, continuous driving of the remnants of disrupted threads produces secondary, aperiodic bursts of energetic release.
dc.format.extent20
dc.format.extent4390354
dc.language.isoeng
dc.relation.ispartofSolar Physicsen
dc.subjectMagnetic fields, coronaen
dc.subjectMagnetohydrodynamicsen
dc.subjectMagnetic flux tubesen
dc.subjectMagnetohydrodynamic avalancheen
dc.subjectMagnetic reconnection, theoryen
dc.subjectQC Physicsen
dc.subjectAstronomy and Astrophysicsen
dc.subjectSpace and Planetary Scienceen
dc.subjectDASen
dc.subject.lccQCen
dc.titleCan multi-threaded flux tubes in coronal arcades support a magnetohydrodynamic avalanche?en
dc.typeJournal articleen
dc.contributor.sponsorEuropean Research Councilen
dc.contributor.sponsorScience & Technology Facilities Councilen
dc.contributor.institutionUniversity of St Andrews. School of Mathematics and Statisticsen
dc.contributor.institutionUniversity of St Andrews. Applied Mathematicsen
dc.identifier.doi10.1007/s11207-021-01865-7
dc.description.statusPeer revieweden
dc.identifier.grantnumber810218en
dc.identifier.grantnumberST/S000402/1en


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