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| Main Authors: | , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2409.15106 |
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| _version_ | 1866929556967915520 |
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| author | Schiavo, Luiz A. C. A. Gordovskyy, Mykola Browning, Philippa K. Silva, Suzana S. A. Verth, Gary Ballai, Istvan Shelyag, Sergiy Ruzheinikov, Sergey N. McLaughlin, James A. Fedun, Viktor |
| author_facet | Schiavo, Luiz A. C. A. Gordovskyy, Mykola Browning, Philippa K. Silva, Suzana S. A. Verth, Gary Ballai, Istvan Shelyag, Sergiy Ruzheinikov, Sergey N. McLaughlin, James A. Fedun, Viktor |
| contents | Solar pores are ideal magnetic structures for wave propagation and transport of energy radially-outwards across the upper layers of the solar atmosphere. We aim to model the excitation and propagation of magnetohydrodynamic waves in a pore with a lightbridge modelled as two interacting magnetic flux tubes separated by a thin, weaker field, layer. We solve the three-dimensional MHD equations numerically and calculate the circulation as a measure of net torsional motion. We find that the interaction between flux tubes results in the natural excitation of propagating torsional Alfvén waves, but find no torsional waves in the model with a single flux tube. The torsional Alfvén waves propagate with wave speeds matching the local Alfvén speed where wave amplitude peaks. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_15106 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Modeling the effects of a lightbridge on oscillations in a solar pore Schiavo, Luiz A. C. A. Gordovskyy, Mykola Browning, Philippa K. Silva, Suzana S. A. Verth, Gary Ballai, Istvan Shelyag, Sergiy Ruzheinikov, Sergey N. McLaughlin, James A. Fedun, Viktor Solar and Stellar Astrophysics Solar pores are ideal magnetic structures for wave propagation and transport of energy radially-outwards across the upper layers of the solar atmosphere. We aim to model the excitation and propagation of magnetohydrodynamic waves in a pore with a lightbridge modelled as two interacting magnetic flux tubes separated by a thin, weaker field, layer. We solve the three-dimensional MHD equations numerically and calculate the circulation as a measure of net torsional motion. We find that the interaction between flux tubes results in the natural excitation of propagating torsional Alfvén waves, but find no torsional waves in the model with a single flux tube. The torsional Alfvén waves propagate with wave speeds matching the local Alfvén speed where wave amplitude peaks. |
| title | Modeling the effects of a lightbridge on oscillations in a solar pore |
| topic | Solar and Stellar Astrophysics |
| url | https://arxiv.org/abs/2409.15106 |