Oxley, W., Zsámberger, N.K. and Erdélyi, R. (2020) Standing MHD waves in a magnetic slab embedded in an asymmetric magnetic plasma environment: surface waves. The Astrophysical Journal, 898 (1). 19. ISSN 0004-637X
Abstract
Building on a previous study that analyzed standing surface waves in magnetic slabs embedded in a non-magnetic external environment, in this study the model is generalized and external magnetic fields are added. The slab is assumed to be thin, with weak magnetic asymmetry. The frequencies of the standing harmonic modes are derived to leading order in the small quantities representing the thin slab width and the weak asymmetry. It is found that the frequencies are more sensitive to changes to the width of the slab than changes in the magnetic asymmetry. The frequency ratio of the first harmonic to the fundamental mode is derived, along with the amplitude difference between the two sides of the slab, as these may be observable quantities that can be compared with observational results and applied to carry out solar magnetoseismology.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2020. The American Astronomical Society. This is an author-produced version of a paper subsequently published in Astrophysical Journal. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | The Sun; Solar physics; Magnetohydrodynamics; Solar oscillations; Magnetic fields; Solar magnetic fields; Solar prominences; Solar atmosphere |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Science (Sheffield) > School of Mathematics and Statistics (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 12 Nov 2020 15:16 |
Last Modified: | 17 Jul 2021 00:38 |
Status: | Published |
Publisher: | American Astronomical Society |
Refereed: | Yes |
Identification Number: | 10.3847/1538-4357/ab9639 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:164321 |