Topological plasma oscillations in the solar tachocline
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arXiv
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| Hauptverfasser: | , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866909073348231168 |
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| author | Lier, Ruben Green, Richard de Boer, Jan Armas, Jay |
| author_facet | Lier, Ruben Green, Richard de Boer, Jan Armas, Jay |
| contents | We study the properties of plasma oscillations in the solar tachocline using shallow-water magnetohydrodynamic equations. These oscillations are expected to correlate with solar activity. We find new qualitative features in the equatorial spectrum of magnetohydrodynamic oscillations associated with magneto-Rossby and magneto-Yanai waves. By studying this spectrum in terms of band theory, we find that magneto-Kelvin and magneto-Yanai waves are topologically protected. This highlights the important role of these two classes of waves, as robust features of the plasma oscillation spectrum, in the interpretation of helioseismological observations. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2401_07622 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Topological plasma oscillations in the solar tachocline Lier, Ruben Green, Richard de Boer, Jan Armas, Jay Solar and Stellar Astrophysics High Energy Physics - Phenomenology Plasma Physics Space Physics We study the properties of plasma oscillations in the solar tachocline using shallow-water magnetohydrodynamic equations. These oscillations are expected to correlate with solar activity. We find new qualitative features in the equatorial spectrum of magnetohydrodynamic oscillations associated with magneto-Rossby and magneto-Yanai waves. By studying this spectrum in terms of band theory, we find that magneto-Kelvin and magneto-Yanai waves are topologically protected. This highlights the important role of these two classes of waves, as robust features of the plasma oscillation spectrum, in the interpretation of helioseismological observations. |
| title | Topological plasma oscillations in the solar tachocline |
| topic | Solar and Stellar Astrophysics High Energy Physics - Phenomenology Plasma Physics Space Physics |
| url | https://arxiv.org/abs/2401.07622 |