Magnetohydrostatic modelling of stellar coronae

MacTaggart, D. , Gregory, S., Neukirch, T. and Donati, J.-F. (2016) Magnetohydrostatic modelling of stellar coronae. Monthly Notices of the Royal Astronomical Society, 456(1), pp. 767-774. (doi: 10.1093/mnras/stv2714)

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We introduce to the stellar physics community a method of modelling stellar coronae that can be considered to be an extension of the potential field. In this approach, the magnetic field is coupled to the background atmosphere. The model is magnetohydrostatic and is a balance between the Lorentz force, the pressure gradient and gravity. Analytical solutions are possible and we consider a particular class of equilibria in this paper. The model contains two free parameters and the effects of these on both the geometry and topology of the coronal magnetic field are investigated. A demonstration of the approach is given using a magnetogram derived from Zeeman–Doppler imaging of the 0.75 M⊙ M-dwarf star GJ 182.

Item Type:Articles
Additional Information:This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: 2016 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.
Glasgow Author(s) Enlighten ID:Mactaggart, Dr David
Authors: MacTaggart, D., Gregory, S., Neukirch, T., and Donati, J.-F.
Subjects:Q Science > QB Astronomy
College/School:College of Science and Engineering > School of Mathematics and Statistics > Mathematics
Journal Name:Monthly Notices of the Royal Astronomical Society
Journal Abbr.:MNRAS
Publisher:Oxford University Press
ISSN (Online):1365-2966
Copyright Holders:Copyright © 2016 The Authors
First Published:First published in Monthly Notices of the Royal Astronomical Society 456(1):767-774
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher

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