Resonant Fast-Alfvén Wave Coupling in a 3D Coronal Arcade
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,...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-03-01
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| Series: | Physics |
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| Online Access: | https://www.mdpi.com/2624-8174/5/1/23 |
| _version_ | 1797609428603633664 |
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| author | Andrew Wright Thomas Elsden |
| author_facet | Andrew Wright Thomas Elsden |
| author_sort | Andrew Wright |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-03-11T06:01:14Z |
| format | Article |
| id | doaj.art-6dd39c1288c6452993493c7f28e64158 |
| institution | Directory Open Access Journal |
| issn | 2624-8174 |
| language | English |
| last_indexed | 2024-03-11T06:01:14Z |
| publishDate | 2023-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Physics |
| spelling | doaj.art-6dd39c1288c6452993493c7f28e641582023-11-17T13:20:24ZengMDPI AGPhysics2624-81742023-03-015131032110.3390/physics5010023Resonant Fast-Alfvén Wave Coupling in a 3D Coronal ArcadeAndrew Wright0Thomas Elsden1School of Mathematics and Statistics, University of St Andrews, St Andrews KY16 9SS, UKSchool of Mathematics and Statistics, University of St Andrews, St Andrews KY16 9SS, UKThe 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.https://www.mdpi.com/2624-8174/5/1/23magnetohydrodynamic wavesresonance wave couplingcoronal arcade |
| spellingShingle | Andrew Wright Thomas Elsden Resonant Fast-Alfvén Wave Coupling in a 3D Coronal Arcade Physics magnetohydrodynamic waves resonance wave coupling coronal arcade |
| title | Resonant Fast-Alfvén Wave Coupling in a 3D Coronal Arcade |
| title_full | Resonant Fast-Alfvén Wave Coupling in a 3D Coronal Arcade |
| title_fullStr | Resonant Fast-Alfvén Wave Coupling in a 3D Coronal Arcade |
| title_full_unstemmed | Resonant Fast-Alfvén Wave Coupling in a 3D Coronal Arcade |
| title_short | Resonant Fast-Alfvén Wave Coupling in a 3D Coronal Arcade |
| title_sort | resonant fast alfven wave coupling in a 3d coronal arcade |
| topic | magnetohydrodynamic waves resonance wave coupling coronal arcade |
| url | https://www.mdpi.com/2624-8174/5/1/23 |
| work_keys_str_mv | AT andrewwright resonantfastalfvenwavecouplingina3dcoronalarcade AT thomaselsden resonantfastalfvenwavecouplingina3dcoronalarcade |