Toward General-Relativistic Magnetohydrodynamics Simulations in Stationary Non-Vacuum Spacetimes
arXiv:2307.15140 · doi:10.3847/2041-8213/acfd1f
Abstract
Accretion of magnetized gas on compact astrophysical objects such as black holes has been successfully modeled using general relativistic magnetohydrodynamic (GRMHD) simulations. These simulations have largely been performed in the Kerr metric, which describes the spacetime of a vacuum and stationary spinning black hole (BH) in general relativity (GR). The simulations have revealed important clues on the physics of accretion and jets near the BH event horizon, and have been used to interpret recent Event Horizon Telescope images of the supermassive BHs, M87 and Sgr A. GRMHD simulations require the spacetime metric in horizon-penetrating coordinates such that all metric coefficients are regular at the event horizon. The Kerr metric and its electrically charged spinning analog, the Kerr-Newman metric, are currently the only metrics available in such coordinates. We report here horizon-penetrating forms of a large class of stationary, axisymmetric, spinning metrics. These can be used to carry out GRMHD simulations of accretion on spinning, nonvacuum BHs and non-BHs within GR, as well as accretion on spinning objects described by non-GR metric theories of gravity.
Corrected typo in eqs. 23, C20
References in corpus (32)
- First M87 Event Horizon Telescope Results. VI. The Shadow and Mass of the Central Black Hole
- First M87 Event Horizon Telescope Results. V. Physical Origin of the Asymmetric Ring
- Horizon-scale tests of gravity theories and fundamental physics from the Event Horizon Telescope image of Sagittarius A
- First Sagittarius A* Event Horizon Telescope Results. VI: Testing the Black Hole Metric
- First Sagittarius A* Event Horizon Telescope Results. V. Testing Astrophysical Models of the Galactic Center Black Hole
- Rotating regular black holes
- Global General Relativistic MHD Simulation of a Tilted Black-Hole Accretion Disk
- Generating rotating regular black hole solutions without complexification
- A Metric for Rapidly Spinning Black Holes Suitable for Strong-Field Tests of the No-Hair Theorem
- Constraints on black-hole charges with the 2017 EHT observations of M87*
- Gravitational Test Beyond the First Post-Newtonian Order with the Shadow of the M87 Black Hole
- Black hole flares: ejection of accreted magnetic flux through 3D plasmoid-mediated reconnection
- The Shadow of a Spherically Accreting Black Hole
- New parametrization for spherically symmetric black holes in metric theories of gravity
- Black hole shadow in a general rotating spacetime obtained through Newman-Janis algorithm
- Bumpy Black Holes in Alternate Theories of Gravity
- Hidden symmetries, null geodesics, and photon capture in the Sen black hole
- State-of-the-art energetic and morphological modelling of the launching site of the M87 jet
- Black hole to breakout: 3D GRMHD simulations of collapsar jets reveal a wide range of transients
- Black Hole Images as Tests of General Relativity: Effects of Spacetime Geometry
- Janis-Newman algorithm: generating rotating and NUT charged black holes
- Flux eruption events drive angular momentum transport in magnetically arrested accretion flows
- General-Relativistic Simulations of Four States of Accretion onto Millisecond Pulsars
- Geodesic incompleteness of some popular regular black holes
- Distinguishing gravitational and emission physics in black-hole imaging: spherical symmetry
- Accurate mapping of spherically symmetric black holes in a parameterised framework
- Black Hole Images as Tests of General Relativity: Effects of Plasma Physics
- Decomposing the Internal Faraday Rotation of Black Hole Accretion Flows
- Shadows and precession of orbits in rotating Janis-Newman-Winicour spacetime
- Testing Gravity with Black Hole Shadow Subrings
- Observational Signatures of Frame Dragging in Strong Gravity
- Probing spacetime and accretion model for the Galactic Center: Comparison of Kerr and dilaton black hole shadows
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- Imaging ultra-compact objects with radiatively inefficient accretion flows
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- Shadows cast by a class of rotating black bounces with an anisotropic fluid
- Observational distinguishability of the Kerr and Kerr-Hayward metrics to EHT