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Particle-in-cell simulations of collisionless magnetic reconnection with a non-uniform guide field

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Wilson_2016_PhysPlasmas_032302_CCBY.pdf (10.35Mb)
Date
03/2016
Author
Wilson, Fiona
Neukirch, Thomas
Hesse, Michael
Harrison, Michael G.
Stark, Craig R.
Funder
European Commission
The Leverhulme Trust
Science & Technology Facilities Council
Grant ID
284515
ST/K000950/1
Keywords
Astrophysics - solar and stellar astrophysics
Physics - plasma physics
QA Mathematics
QB Astronomy
QC Physics
NDAS
BDC
R2C
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Abstract
Results are presented of a first study of collisionless magnetic reconnection starting from a recently found exact nonlinear force-free Vlasov-Maxwell equilibrium. The initial state has a Harris sheet magnetic field profile in one direction and a non-uniform guide field in a second direction, resulting in a spatially constant magnetic field strength as well as a constant initial plasma density and plasma pressure. It is found that the reconnection process initially resembles guide field reconnection, but that a gradual transition to anti-parallel reconnection happens as the system evolves. The time evolution of a number of plasma parameters is investigated, and the results are compared with simulations starting from a Harris sheet equilibrium and a Harris sheet plus constant guide field equilibrium.
Citation
Wilson , F , Neukirch , T , Hesse , M , Harrison , M G & Stark , C R 2016 , ' Particle-in-cell simulations of collisionless magnetic reconnection with a non-uniform guide field ' , Physics of Plasmas , vol. 23 , 032302 , pp. 1-11 . https://doi.org/10.1063/1.4942939
Publication
Physics of Plasmas
Status
Peer reviewed
DOI
https://doi.org/10.1063/1.4942939
ISSN
1070-664X
Type
Journal article
Rights
© 2016 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/).
Collections
  • University of St Andrews Research
URL
http://adsabs.harvard.edu/abs/2015arXiv151207844W
URI
http://hdl.handle.net/10023/8386

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