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MHD waves at a spherical interface modelling coronal global EIT waves

Douglas, M. and Ballai, I. (2007) MHD waves at a spherical interface modelling coronal global EIT waves. In: Erdelyi, R. and Mendoza-Briceno, C.A., (eds.) Waves & Oscillations in the Solar Atmosphere: Heating and Magneto-Seismology. IAU Symposium 247, September 17-22, 2007, Porlamar, Isla de Margarita, Venezuela. Proceedings of the International Astronomical Union, 3 (s247). Cambridge University Press , Cambridge , pp. 251-254. ISBN 978-0-52187-4694

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Abstract

Energetically eruptive events such as flares and coronal mass ejections (CMEs) are known to generate global waves, propagating over large distances, sometimes comparable to the solar radius. In this contribution EIT waves are modelled as waves propagating at a spherical density interface in the presence of a radially expanding magnetic field. The generation and propagation of EIT waves is studied numerically for coronal parameters. Simple equilibria allow the explanation of the coronal dimming caused by EIT waves as a region of rarified plasma created by a siphon flow.

Item Type: Proceedings Paper
Copyright, Publisher and Additional Information: © 2008 International Astronomical Union. Reproduced with the permission of the copyright holder.
Academic Units: The University of Sheffield > Faculty of Science (Sheffield) > School of Mathematics and Statistics (Sheffield)
Depositing User: Mrs Megan Hobbs
Date Deposited: 29 Mar 2010 10:07
Last Modified: 08 Feb 2013 17:00
Published Version: http://dx.doi.org/10.1017/S1743921308014944
Status: Published
Publisher: Cambridge University Press
Refereed: Yes
Identification Number: 10.1017/S1743921308014944
URI: http://eprints.whiterose.ac.uk/id/eprint/10579

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