In a quantum Oppenheimer-Snyder black hole with an external magnetic field, the magnetic coupling boosts the disk luminosity and efficiency by large factors while the quantum parameter mainly shrinks the shadow and capture cross sections.
Charged quantum Oppenheimer-Snyder model
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abstract
In the framework of loop quantum cosmology, particularly within the quantum Oppenheimer-Snyder model, the semiclassical Ashtekar-Pawlowski-Singh (APS) metric is associated with a static, spherically symmetric black hole that incorporates quantum effects derived from the APS metric. This quantum-corrected black hole can be interpreted as a modified Schwarzschild black hole, where the Schwarzschild metric function is adjusted by an additional term proportional to $\frac{M^{2}}{r^{4}}$, with $r$ denoting the radial coordinate and $M,$ the black hole mass. In this study, we show that such a quantum-mechanically modified black hole can arise in the context of nonlinear electrodynamics with either electric or magnetic charge. This charged, quantum-corrected solution is then matched to a dust ball of constant mass $M_{APS}$, governed by the APS metric, at a timelike thin-shell possessing nonzero mass $m$ and electric charge $Q$ or magnetic charge $P$. Analytically, it is demonstrated that the thin-shell oscillates around an equilibrium radius $r=R_{eq}$, which is expressed in terms of $% M_{APS}$, $m$, and $Q$ or $P$.
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In the quantum Oppenheimer-Snyder black hole, radial tidal forces reverse sign and remain bounded along infalling timelike geodesics because the trajectory bounces before reaching the curvature singularity.
Establishes a parameter mapping from anisotropic matter black holes to nonlinear electrodynamics black holes, recovering known solutions like dark matter and scalar hair cases and extending to rotating extremal limits.
For the quantum Oppenheimer-Snyder black hole, the heat capacity Davies points coincide exactly with the critical onset values for spontaneous scalarization in Einstein-Gauss-Bonnet-scalar gravity.
The work calculates scalar quasinormal mode spectra for a rotating quantum-corrected black hole and constructs a methodological pipeline to infer the quantum correction parameter from gravitational-wave ringdown data using informative priors.
For a magnetically charged black hole in Einstein-Gauss-Bonnet-scalar theory with nonlinear electrodynamics, the paper derives thermodynamic relations, finds shadow-based mass constraints, and predicts two scalarization channels with different branch structures.
citing papers explorer
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Thin accretion disk and gravitational capture cross sections of a quantum Oppenheimer--Snyder black hole immersed in an external magnetic field
In a quantum Oppenheimer-Snyder black hole with an external magnetic field, the magnetic coupling boosts the disk luminosity and efficiency by large factors while the quantum parameter mainly shrinks the shadow and capture cross sections.
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Tidal forces in the quantum Oppenheimer--Snyder black hole
In the quantum Oppenheimer-Snyder black hole, radial tidal forces reverse sign and remain bounded along infalling timelike geodesics because the trajectory bounces before reaching the curvature singularity.
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Anisotropic matter and nonlinear electromagnetics black holes
Establishes a parameter mapping from anisotropic matter black holes to nonlinear electrodynamics black holes, recovering known solutions like dark matter and scalar hair cases and extending to rotating extremal limits.
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Quantum parameter-mass induced scalarization of qOS-black hole in the Einstein-Gauss-Bonnet-scalar theory
For the quantum Oppenheimer-Snyder black hole, the heat capacity Davies points coincide exactly with the critical onset values for spontaneous scalarization in Einstein-Gauss-Bonnet-scalar gravity.
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The quasinormal modes of the rotating quantum corrected black holes
The work calculates scalar quasinormal mode spectra for a rotating quantum-corrected black hole and constructs a methodological pipeline to infer the quantum correction parameter from gravitational-wave ringdown data using informative priors.
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Two scalarizations of magnetically charged black holes
For a magnetically charged black hole in Einstein-Gauss-Bonnet-scalar theory with nonlinear electrodynamics, the paper derives thermodynamic relations, finds shadow-based mass constraints, and predicts two scalarization channels with different branch structures.