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Resonant fast-Alfvén wave coupling in a 3D coronal arcade

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Wright_2023_Physics_Resonant_fast_Alfven_CC.pdf (2.149Mb)
Date
17/03/2023
Author
Wright, Andrew N.
Elsden, Tom
Funder
Science & Technology Facilities Council
Grant ID
ST/W001195/1
Keywords
Magnetohydrodynamic waves
Resonance
Coronal arcade
QC Physics
DAS
MCP
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Abstract
The resonant excitation of Alfvén waves using the fast magnetosonic mode is important in space plasmas. In this paper, we consider a simple model of a three-dimensional (3D) coronal arcade. A numerical approach is used to produce a driven normal mode. We find that resonant coupling can occur in 3D, but there are new features that are absent in 2D. In particular, the polarisation of the Alfvén waves can vary with position throughout the Resonant Zone. Moreover, there are an infinite number of possible paths the resonant waves can exist on.
Citation
Wright , A N & Elsden , T 2023 , ' Resonant fast-Alfvén wave coupling in a 3D coronal arcade ' , Physics , vol. 5 , no. 1 , pp. 310-321 . https://doi.org/10.3390/physics5010023
Publication
Physics
Status
Peer reviewed
DOI
https://doi.org/10.3390/physics5010023
ISSN
2624-8174
Type
Journal article
Rights
Copyright: © 2023 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/4.0/).
Description
Funding: This research was funded in part by STFC grant ST/W001195/1 (A.N.W.). T.E. was funded in part by a Leverhulme Early Career Fellowship ECF-2019-155.
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  • University of St Andrews Research
URI
http://hdl.handle.net/10023/27214

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