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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/2408.01591 |
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| _version_ | 1866910554541522944 |
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| author | Cally, Paul S. Bogdan, Thomas J. |
| author_facet | Cally, Paul S. Bogdan, Thomas J. |
| contents | The basic equations, concepts, and modes of linear, ideal, MHD waves -- slow, Alfvén and fast -- are set out and generalised to gravitationally-stratified atmospheres. Particular attention is devoted to mode conversion, wherein the local behavior of a global wave changes from one mode to another in passing through particular atmospheric layers. Exact solutions are explored where available. Eikonal methods -- WKBJ and ray theory -- are described. Although our emphasis is on the theoretical underpinning of the subject, the solar atmospheric heating implications of fast/slow and fast/Alfvén conversions are discussed in detail. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2408_01591 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | MHD waves in homogeneous and continuously stratified atmospheres Cally, Paul S. Bogdan, Thomas J. Solar and Stellar Astrophysics Space Physics The basic equations, concepts, and modes of linear, ideal, MHD waves -- slow, Alfvén and fast -- are set out and generalised to gravitationally-stratified atmospheres. Particular attention is devoted to mode conversion, wherein the local behavior of a global wave changes from one mode to another in passing through particular atmospheric layers. Exact solutions are explored where available. Eikonal methods -- WKBJ and ray theory -- are described. Although our emphasis is on the theoretical underpinning of the subject, the solar atmospheric heating implications of fast/slow and fast/Alfvén conversions are discussed in detail. |
| title | MHD waves in homogeneous and continuously stratified atmospheres |
| topic | Solar and Stellar Astrophysics Space Physics |
| url | https://arxiv.org/abs/2408.01591 |