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dc.contributor.authorForbes, Terry G.
dc.contributor.authorPriest, Eric R.
dc.contributor.authorSeaton, Daniel B.
dc.contributor.authorLitvinenko, Yuri E.
dc.date.accessioned2013-08-05T23:25:44Z
dc.date.available2013-08-05T23:25:44Z
dc.date.copyright2013
dc.date.issued2013
dc.identifier.citationForbes, T. G., Priest, E. R., Seaton, D. B. & Litvinenko, Y. E. (2013). Indeterminacy and instability in Petschek reconnection. Physics of Plasmas, 20(5), 052902.en_NZ
dc.identifier.urihttps://hdl.handle.net/10289/7821
dc.description.abstractWe explain two puzzling aspects of Petschek's model for fast reconnection. One is its failure to occur in plasma simulations with uniform resistivity. The other is its inability to provide anything more than an upper limit for the reconnection rate. We have found that previously published analytical solutions based on Petschek's model are structurally unstable if the electrical resistivity is uniform. The structural instability is associated with the presence of an essential singularity at the X-line that is unphysical. By requiring that such a singularity does not exist, we obtain a formula that predicts a specific rate of reconnection. For uniform resistivity, reconnection can only occur at the slow, Sweet-Parker rate. For nonuniform resistivity, reconnection can occur at a much faster rate provided that the resistivity profile is not too flat near the X-line. If this condition is satisfied, then the scale length of the nonuniformity determines the reconnection rate.en_NZ
dc.format.mimetypeapplication/pdf
dc.language.isoenen_NZ
dc.publisherAIPen_NZ
dc.relation.ispartofPhysics of Plasmas
dc.relation.urihttp://pop.aip.org/resource/1/phpaen/v20/i5/p052902_s1en_NZ
dc.rightsThis article has been published in the journal: Physics of Plasmas. © 2013 AIP Publishing LLC. Used with permission.en_NZ
dc.subjectmagnetic reconnectionen_NZ
dc.subjectplasma instabilityen_NZ
dc.subjectplasma magnetohydrodynamicsen_NZ
dc.subjectplasma simulationen_NZ
dc.subjectplasma transport processesen_NZ
dc.titleIndeterminacy and instability in Petschek reconnectionen_NZ
dc.typeJournal Articleen_NZ
dc.identifier.doi10.1063/1.4804337en_NZ
dc.relation.isPartOfPhysics of Plasmasen_NZ
pubs.begin-page1en_NZ
pubs.elements-id39069
pubs.end-page13en_NZ
pubs.issue5en_NZ
pubs.volume20en_NZ


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