The physics of non-ideal general relativistic magnetohydrodynamics
| Autor: | Nils Andersson, Ian Hawke, Thomas Celora, G.L. Comer |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
High Energy Astrophysical Phenomena (astro-ph.HE)
Physics Equation of state Ideal (set theory) Microphysics General relativity Charge neutrality FOS: Physical sciences Astronomy and Astrophysics General Relativity and Quantum Cosmology (gr-qc) General Relativity and Quantum Cosmology Connection (mathematics) Theoretical physics Space and Planetary Science Point (geometry) Magnetohydrodynamics Astrophysics - High Energy Astrophysical Phenomena |
| Popis: | We consider a framework for non-ideal magnetohydrodynamics in general relativity, paying particular attention to the physics involved. The discussion highlights the connection between the microphysics (associated with a given equation of state) and the global dynamics (from the point of view of numerical simulations), and includes a careful consideration of the assumptions that lead to ideal and resistive magnetohydrodynamics. We pay particular attention to the issue of local charge neutrality, which tends to be assumed but appears to be more involved than is generally appreciated. While we do not resolve all the involved issues, we highlight how some of the assumptions and simplifications may be tested by simulations. The final formulation is consistent, both logically and physically, preparing the ground for a new generation of models of relevant astrophysical scenarios. 15 pages, 3 figures, MNRAS format |
| Databáze: | OpenAIRE |
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