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Force-free collisionless current sheet models with non-uniform temperature and density profiles
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dc.contributor.author | Wilson, Fiona | |
dc.contributor.author | Neukirch, Thomas | |
dc.contributor.author | Allanson, Oliver Douglas | |
dc.date.accessioned | 2017-09-05T10:30:10Z | |
dc.date.available | 2017-09-05T10:30:10Z | |
dc.date.issued | 2017-08-17 | |
dc.identifier.citation | Wilson , F , Neukirch , T & Allanson , O D 2017 , ' Force-free collisionless current sheet models with non-uniform temperature and density profiles ' , Physics of Plasmas , vol. 24 , no. 9 , 092105 . https://doi.org/10.1063/1.4997703 | en |
dc.identifier.issn | 1070-664X | |
dc.identifier.other | PURE: 250642054 | |
dc.identifier.other | PURE UUID: dd07f286-160b-4199-9d5e-3924db9964ac | |
dc.identifier.other | Scopus: 85027703766 | |
dc.identifier.other | ORCID: /0000-0002-7597-4980/work/36106394 | |
dc.identifier.other | WOS: 000412107400009 | |
dc.identifier.uri | https://hdl.handle.net/10023/11614 | |
dc.description | The authors acknowledge the support of the Science and Technology Facilities Council via the consolidated grants ST/K000950/1 and ST/N000609/1 and the doctoral training grant ST/K502327/1 (O. A.), and the Natural Environment Research Council via grant no. NE/P017274/1 (Rad-Sat) (O. A.). F. W. and T. N. would also like to thank the University of St Andrews for general financial support | en |
dc.description.abstract | We present a class of one-dimensional, strictly neutral, Vlasov-Maxwell equilibrium distribution functions for force-free current sheets, with magnetic fields defined in terms of Jacobian elliptic functions, extending the results of Abraham-Shrauner [Phys. Plasmas 20, 102117 (2013)] to allow for non-uniform density and temperature profiles. To achieve this, we use an approach previously applied to the force-free Harris sheet by Kolotkov et al. [Phys. Plasmas 22, 112902 (2015)]. In one limit of the parameters, we recover the model of Kolotkov et al. [Phys. Plasmas 22, 112902 (2015)], while another limit gives a linear force-free field. We discuss conditions on the parameters such that the distribution functions are always positive and give expressions for the pressure, density, temperature, and bulk-flow velocities of the equilibrium, discussing the differences from previous models. We also present some illustrative plots of the distribution function in velocity space. | |
dc.format.extent | 11 | |
dc.language.iso | eng | |
dc.relation.ispartof | Physics of Plasmas | en |
dc.rights | Copyright 2017 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). [http://dx.doi.org/10.1063/1.4997703] | en |
dc.subject | QA Mathematics | en |
dc.subject | QC Physics | en |
dc.subject | T-NDAS | en |
dc.subject | BDC | en |
dc.subject.lcc | QA | en |
dc.subject.lcc | QC | en |
dc.title | Force-free collisionless current sheet models with non-uniform temperature and density profiles | en |
dc.type | Journal article | en |
dc.contributor.sponsor | Science & Technology Facilities Council | en |
dc.contributor.sponsor | Science & Technology Facilities Council | en |
dc.description.version | Publisher PDF | en |
dc.contributor.institution | University of St Andrews. Applied Mathematics | en |
dc.contributor.institution | University of St Andrews. School of Mathematics and Statistics | en |
dc.identifier.doi | https://doi.org/10.1063/1.4997703 | |
dc.description.status | Peer reviewed | en |
dc.identifier.grantnumber | ST/K000950/1 | en |
dc.identifier.grantnumber | ST/N000609/1 | en |
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