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Topological constraints on magnetic field relaxation
KTH, Centres, Nordic Institute for Theoretical Physics NORDITA.
KTH, Centres, Nordic Institute for Theoretical Physics NORDITA.ORCID iD: 0000-0002-7304-021X
2012 (English)In: Proc. Int. Astron. Union, 2012, no S294, 353-357 p.Conference paper (Refereed)
Abstract [en]

Magnetic field relaxation is determined by both the field's geometry and its topology. For relaxation processes, however, it turns out that its topology is a much more stringent constraint. As quantifier for the topology we use magnetic helicity and test whether it is a stronger condition than the linking of field lines. Further, we search for evidence of other topological invariants, which give rise to further restrictions in the field's relaxation. We find that magnetic helicity is the sole determinant in most cases. Nevertheless, we see evidence for restrictions not captured through magnetic helicity.

Place, publisher, year, edition, pages
2012. no S294, 353-357 p.
, Proceedings of the International Astronomical Union, ISSN 1743-9213 ; 8
Keyword [en]
field topology, Magnetic field relaxation, magnetic helicity
National Category
Astronomy, Astrophysics and Cosmology
URN: urn:nbn:se:kth:diva-128633DOI: 10.1017/S1743921313002743ScopusID: 2-s2.0-84880567367ISBN: 9781107033832OAI: diva2:653165
Symposium International Astronomical Union 2012

QC 20131003

Available from: 2013-10-03 Created: 2013-09-16 Last updated: 2013-10-03Bibliographically approved

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