Magnetic field relaxation and current sheets in an ideal plasma

Candelaresi, S. , Pontin, D.I. and Hornig, G. (2015) Magnetic field relaxation and current sheets in an ideal plasma. Astrophysical Journal, 808(2), 134. (doi: 10.1088/0004-637X/808/2/134)

Full text not currently available from Enlighten.


We investigate the existence of magnetohydrostatic equilibria for topologically complex magnetic fields. The approach employed is to perform ideal numerical relaxation experiments. We use a newly developed Lagrangian relaxation scheme that exactly preserves the magnetic field topology during the relaxation. Our configurations include both twisted and sheared fields, of which some fall into the category for which Parker predicted no force-free equilibrium. The first class of field considered contains no magnetic null points, and field lines connect between two perfectly conducting plates. In these cases, we observe only resolved current layers of finite thickness. In further numerical experiments, we confirm that magnetic null points are loci of singular currents.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Candelaresi, Dr Simon
Authors: Candelaresi, S., Pontin, D.I., and Hornig, G.
College/School:College of Science and Engineering > School of Mathematics and Statistics > Mathematics
Journal Name:Astrophysical Journal
Publisher:IOP Publishing
ISSN (Online):1538-4357
Published Online:28 July 2015

University Staff: Request a correction | Enlighten Editors: Update this record