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)
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Abstract
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 |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| 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: | 0004-637X |
| ISSN (Online): | 1538-4357 |
| Published Online: | 28 July 2015 |
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