Enhanced Blandford Znajek jet in loop quantum black hole

Jiang, Hong-Xuan; Dihingia, Indu K.; Liu, Cheng; Mizuno, Yosuke; Zhu, Tao

doi:10.1088/1475-7516/2024/05/101

Cited by 3 publications

(1 citation statement)

References 87 publications

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“…These simulations and calculations show that images have high degeneracy when it comes to the deformation in Kerr spacetime. Therefore, further studies of horizon-scale dynamics and imaging are inevitable (e.g., Chatterjee et al 2023aChatterjee et al , 2023bJiang et al 2024a).…”

Section: Introductionmentioning

confidence: 99%

A Revisited Equilibrium Solution of the Fishbone and Moncrief Torus for Extended General Relativistic Magnetohydrodynamic Simulations

Uniyal,

Dihingia,

Mizuno

2024

ApJ

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Accretion physics has become more important recently due to the detection of the first horizon-scale images of the supermassive black holes of M 87* and Sgr A* by the Event Horizon Telescope. General relativistic magnetohydrodynamic (GRMHD) simulations of magnetized accretion flows onto a Kerr black hole have been used to interpret them. However, further testing the theory of gravity by using horizon-scale images requires performing consistent GRMHD simulations in non-Kerr spacetime. In this paper, we revisited the hydrodynamical equilibrium solution of the Fishbone and Moncrief (FM) torus that can be used to study any stationary, axisymmetric, vacuum, or nonvacuum spacetime. Further, we check the stability of the FM torus in non-Kerr spacetime by general relativistic hydrodynamic simulations. We find that FM torus in non-Kerr spacetime is indeed stable under long-term evolution. We conclude that the generalized FM torus solution would be very useful for creating new GRMHD libraries in extended Kerr black holes.

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Section: Introductionmentioning

confidence: 99%

A Revisited Equilibrium Solution of the Fishbone and Moncrief Torus for Extended General Relativistic Magnetohydrodynamic Simulations

Uniyal,

Dihingia,

Mizuno

2024

ApJ

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Particle dynamics and the accretion disk around a Self-dual Black Hole immersed in a magnetic field in Loop Quantum Gravity

Uktamov,

Alloqulov,

Shaymatov

et al. 2025

Physics of the Dark Universe

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Dynamics and emission properties of flux ropes from two-temperature GRMHD simulations with multiple magnetic loops

Jiang,

Mizuno,

Dihingia

et al. 2024

A&A

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Flux ropes erupting in the vicinity of a black hole are thought to be a potential model for the flares observed in Sagittarius\,A$^*$. In this study, we examine the radiative properties of flux ropes that emerged in the vicinity of a black hole. We performed three-dimensional two-temperature general relativistic magnetohydrodynamic (GRMHD) simulations of magnetized accretion flows with alternating multiple magnetic loops and general relativistic radiation transfer (GRRT) calculations. In the GRMHD simulations, we implemented two different sizes of initial magnetic loops. In the small loop case, magnetic dissipation leads to a weaker excitement of magneto-rotational instability inside the torus, which generates a lower accretion rate compared to the large loop case. However, the small loop case generates more flux ropes due to frequent reconnection by magnetic loops with different polarities. By calculating the thermal synchrotron emission, we found that the variability of light curves and the emitting region are tightly related. At $230\ GHz$ and higher, the emission from the flux ropes is relatively stronger compared to the background, which is responsible for the filamentary structure in the images. At lower frequencies (e.g. $43\ GHz$), emission comes from more extended regions, which have a less filamentary structure in the image. Our study shows that self-consistent electron temperature models are essential for the calculation of thermal synchrotron radiation and the morphology of the GRRT images. Flux ropes contribute considerable emission at frequencies $ GHz$.

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Enhanced Blandford Znajek jet in loop quantum black hole

Cited by 3 publications

References 87 publications

A Revisited Equilibrium Solution of the Fishbone and Moncrief Torus for Extended General Relativistic Magnetohydrodynamic Simulations

A Revisited Equilibrium Solution of the Fishbone and Moncrief Torus for Extended General Relativistic Magnetohydrodynamic Simulations

Particle dynamics and the accretion disk around a Self-dual Black Hole immersed in a magnetic field in Loop Quantum Gravity

Dynamics and emission properties of flux ropes from two-temperature GRMHD simulations with multiple magnetic loops

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