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dc.contributor.authorCraig, Ian J.D.
dc.contributor.authorLitvinenko, Yuri E.
dc.date.accessioned2008-11-19T01:19:35Z
dc.date.available2008-11-19T01:19:35Z
dc.date.issued2007-10
dc.identifier.citationCraig, I. J. D. & Litvinenko, Y. E. (2007). Wave energy dissipation by anisotropic viscosity in magnetic x-points. The Astrophysical Journal, 667(2), 1235- 1242.en_US
dc.identifier.urihttps://hdl.handle.net/10289/1387
dc.description.abstractThe viscous dissipation of axial field disturbances in planar magnetic X-points is examined. It is emphasized that an accurate treatment requires a nonisotropic tensor viscosity whose components are governed by the local magnetic field. Numerical solutions are constructed, which compare the buildup of viscous forces using the tensor formulation against a simplified model based on conventional shear viscosity. The scaling of the global energy-loss rate with the viscosity coefficient is shown to follow for both the traditional shear viscosity and the Braginskii bulk viscosity. This suggests that viscous wave dissipation can occur quite rapidly, in a few tens of Alfvén times. The results imply that large-scale disturbances, generated by magnetic reconnection in the solar corona, should dissipate in a time on the order of a few minutes and significantly contribute to coronal heating.en_US
dc.format.mimetypeapplication/pdf
dc.language.isoen
dc.publisherUNIV CHICAGO PRESSen_NZ
dc.relation.urihttp://www.journals.uchicago.edu/doi/abs/10.1086/521091en_US
dc.rightsThis article has been published in the Astrophysical Journal. Copyright 2007 The American Astronomical Society.en_US
dc.subjectMHD—plasmas—sunen_US
dc.subjectflares—sunen_US
dc.subjectmagnetic fieldsen_US
dc.titleWave energy dissipation by anisotropic viscosity in magnetic x-pointsen_US
dc.typeJournal Articleen_US
dc.identifier.doi10.1086/521091en_US
dc.relation.isPartOfThe Astrophysical Journalen_NZ
pubs.begin-page1235en_NZ
pubs.elements-id32703
pubs.end-page1242en_NZ
pubs.issue2en_NZ
pubs.volume667en_NZ


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