Scale-dependent alignment in compressible magnetohydrodynamic turbulence
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arXiv
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| Hauptverfasser: | , |
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| Format: | Preprint |
| Veröffentlicht: |
2025
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| _version_ | 1866908331571937280 |
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| author | Beattie, James R. Bhattacharjee, Amitava |
| author_facet | Beattie, James R. Bhattacharjee, Amitava |
| contents | Using $10,\!080^3$ grid simulations, we analyze scale-dependent alignment in driven, compressible, no net-flux magnetohydrodynamic turbulence. The plasma self-organizes into localized, strongly aligned regions. Alignment spans all primitive variables and their curls. Contrary to incompressible theory, velocity-magnetic alignment scales as $θ(λ) \sim λ^{1/8}$, where $λ$ is the scale, suggesting a distinct three-dimensional eddy anisotropy and a much higher critical transition scale toward a reconnection-mediated cascade. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_15538 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Scale-dependent alignment in compressible magnetohydrodynamic turbulence Beattie, James R. Bhattacharjee, Amitava Plasma Physics Astrophysics of Galaxies Chaotic Dynamics Fluid Dynamics Using $10,\!080^3$ grid simulations, we analyze scale-dependent alignment in driven, compressible, no net-flux magnetohydrodynamic turbulence. The plasma self-organizes into localized, strongly aligned regions. Alignment spans all primitive variables and their curls. Contrary to incompressible theory, velocity-magnetic alignment scales as $θ(λ) \sim λ^{1/8}$, where $λ$ is the scale, suggesting a distinct three-dimensional eddy anisotropy and a much higher critical transition scale toward a reconnection-mediated cascade. |
| title | Scale-dependent alignment in compressible magnetohydrodynamic turbulence |
| topic | Plasma Physics Astrophysics of Galaxies Chaotic Dynamics Fluid Dynamics |
| url | https://arxiv.org/abs/2504.15538 |