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The emergence of braided magnetic fields

Prior, C.B.; MacTaggart, D.

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Authors

D. MacTaggart



Abstract

We study the emergence of braided magnetic fields from the top of the solar interior through to the corona. It is widely believed that emerging regions smaller than active regions are formed in the upper convection zone near the photosphere. Here, bundles of braided, rather than twisted, magnetic field can be formed, which then rise upward to emerge into the atmosphere. To test this theory, we investigate the behaviour of braided magnetic fields as they emerge into the solar atmosphere. We compare and contrast our models to previous studies of twisted flux tube emergence and discuss results that can be tested observationally. Although this is just an initial study, our results suggest that the underlying magnetic field structure of small emerging regions need not be twisted and that braided field, formed in the convection zone, could suffice.

Citation

Prior, C., & MacTaggart, D. (2016). The emergence of braided magnetic fields. Geophysical and Astrophysical Fluid Dynamics, 110(5), 432-457. https://doi.org/10.1080/03091929.2016.1216552

Journal Article Type Article
Acceptance Date Jul 20, 2016
Online Publication Date Jul 29, 2016
Publication Date Sep 2, 2016
Deposit Date Aug 1, 2016
Publicly Available Date Jul 29, 2017
Journal Geophysical and Astrophysical Fluid Dynamics
Print ISSN 0309-1929
Electronic ISSN 1029-0419
Publisher Taylor and Francis Group
Peer Reviewed Peer Reviewed
Volume 110
Issue 5
Pages 432-457
DOI https://doi.org/10.1080/03091929.2016.1216552

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