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The physics of non-ideal general relativistic magnetohydrodynamics

The physics of non-ideal general relativistic magnetohydrodynamics
The physics of non-ideal general relativistic magnetohydrodynamics
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 prepares the ground for a new generation of models of relevant astrophysical scenarios.
1365-2966
3737-3750
Andersson, N.
2dd6d1ee-cefd-478a-b1ac-e6feedafe304
Hawke, I.
fc964672-c794-4260-a972-eaf818e7c9f4
Celora, T.
b15e9792-aae0-479a-83c5-b5c874b19fa6
Comer, G.L.
e78ae434-e576-4b39-93cd-679b6f30432d
Andersson, N.
2dd6d1ee-cefd-478a-b1ac-e6feedafe304
Hawke, I.
fc964672-c794-4260-a972-eaf818e7c9f4
Celora, T.
b15e9792-aae0-479a-83c5-b5c874b19fa6
Comer, G.L.
e78ae434-e576-4b39-93cd-679b6f30432d

Andersson, N., Hawke, I., Celora, T. and Comer, G.L. (2021) The physics of non-ideal general relativistic magnetohydrodynamics. Monthly Notices of the Royal Astronomical Society, 509 (3), 3737-3750. (doi:10.1093/mnras/stab3257).

Record type: Article

Abstract

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 prepares the ground for a new generation of models of relevant astrophysical scenarios.

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The physics of non-ideal general relativistic magnetohydrodynamics - Accepted Manuscript
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Accepted/In Press date: 4 November 2021
Published date: 25 November 2021

Identifiers

Local EPrints ID: 454822
URI: http://eprints.soton.ac.uk/id/eprint/454822
ISSN: 1365-2966
PURE UUID: b4041f3c-6db0-42cf-a24a-9720e53a7f5d
ORCID for N. Andersson: ORCID iD orcid.org/0000-0001-8550-3843
ORCID for I. Hawke: ORCID iD orcid.org/0000-0003-4805-0309
ORCID for T. Celora: ORCID iD orcid.org/0000-0002-6515-3644

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Date deposited: 24 Feb 2022 21:50
Last modified: 17 Mar 2024 03:02

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Contributors

Author: N. Andersson ORCID iD
Author: I. Hawke ORCID iD
Author: T. Celora ORCID iD
Author: G.L. Comer

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