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dc.contributor.authorCargill, P.J.
dc.contributor.authorBradshaw, S.J.
dc.date.accessioned2014-09-25T14:01:06Z
dc.date.available2014-09-25T14:01:06Z
dc.date.issued2013-07-20
dc.identifier151154104
dc.identifier6b090207-3471-4710-97e2-3e4e2fd3eff2
dc.identifier84879903029
dc.identifier.citationCargill , P J & Bradshaw , S J 2013 , ' The cooling of coronal plasmas. IV. Catastrophic cooling of loops ' , Astrophysical Journal , vol. 772 , no. 1 , 40 . https://doi.org/10.1088/0004-637X/772/1/40en
dc.identifier.issn0004-637X
dc.identifier.urihttps://hdl.handle.net/10023/5503
dc.description.abstractWe examine the radiative cooling of coronal loops and demonstrate that the recently identified catastrophic cooling is due to the inability of a loop to sustain radiative/enthalpy cooling below a critical temperature, which can be >1 MK in flares, 0.5-1 MK in active regions, and 0.1 MK in long tenuous loops. Catastrophic cooling is characterized by a rapid fall in coronal temperature, while the coronal density changes by a small amount. Analytic expressions for the critical temperature are derived and show good agreement with numerical results. This effect considerably limits the lifetime of coronal plasmas below the critical temperature.
dc.format.extent5
dc.format.extent173914
dc.language.isoeng
dc.relation.ispartofAstrophysical Journalen
dc.subjectSun: coronaen
dc.subjectSun: transition regionen
dc.subjectQB Astronomyen
dc.subjectQC Physicsen
dc.subject.lccQBen
dc.subject.lccQCen
dc.titleThe cooling of coronal plasmas. IV. Catastrophic cooling of loopsen
dc.typeJournal articleen
dc.contributor.institutionUniversity of St Andrews. School of Mathematics and Statisticsen
dc.identifier.doi10.1088/0004-637X/772/1/40
dc.description.statusPeer revieweden


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