Short-Time Plasma Evolution: Flow Generation and Magnetogenesis
Fuente:
arXiv
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| Autores principales: | , |
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| Formato: | Preprint |
| Publicado: |
2026
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| _version_ | 1866914463416844288 |
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| author | Saleem, Zain H. Saleem, Hamid |
| author_facet | Saleem, Zain H. Saleem, Hamid |
| contents | We develop a self-consistent analytical two-fluid framework for plasma evolution in the short-time regime, elucidating the fundamental mechanism underlying the coupled generation of flow and magnetic fields. We show that consistency between ion momentum and mass conservation imposes a structural constraint on the system: the total pressure must satisfy the Laplace equation, $\nabla^2 P = 0$. This constraint enables a class of exact analytical solutions in which pressure gradients simultaneously drive plasma flow and generate magnetic fields through a Biermann-type mechanism. Using representative parameters, we obtain magnetic-field strengths and flow velocities consistent with both laser-produced plasmas and large-scale astrophysical systems. This framework provides a unified description of pressure-driven magnetogenesis and plasma flow in the short-time regime. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2604_09194 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Short-Time Plasma Evolution: Flow Generation and Magnetogenesis Saleem, Zain H. Saleem, Hamid Plasma Physics Astrophysics of Galaxies Solar and Stellar Astrophysics We develop a self-consistent analytical two-fluid framework for plasma evolution in the short-time regime, elucidating the fundamental mechanism underlying the coupled generation of flow and magnetic fields. We show that consistency between ion momentum and mass conservation imposes a structural constraint on the system: the total pressure must satisfy the Laplace equation, $\nabla^2 P = 0$. This constraint enables a class of exact analytical solutions in which pressure gradients simultaneously drive plasma flow and generate magnetic fields through a Biermann-type mechanism. Using representative parameters, we obtain magnetic-field strengths and flow velocities consistent with both laser-produced plasmas and large-scale astrophysical systems. This framework provides a unified description of pressure-driven magnetogenesis and plasma flow in the short-time regime. |
| title | Short-Time Plasma Evolution: Flow Generation and Magnetogenesis |
| topic | Plasma Physics Astrophysics of Galaxies Solar and Stellar Astrophysics |
| url | https://arxiv.org/abs/2604.09194 |