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Related papers: Shadow and Quasinormal Modes of a Rotating Loop Qu…

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In this study, we delve into the observational implications of rotating Loop Quantum Black Holes (LQBHs) within an astrophysical framework. We employ semi-analytical General Relativistic Radiative Transfer (GRRT) computations to study the…

General Relativity and Quantum Cosmology · Physics 2023-12-29 Hong-Xuan Jiang , Cheng Liu , Indu K. Dihingia , Yosuke Mizuno , Haiguang Xu , Tao Zhu , Qiang Wu

Recently, two new spherically symmetric black hole models with covariance have been proposed in effective quantum gravity. Based on these models, we use the modified Newman-Janis algorithm to generate two rotating quantum-corrected black…

General Relativity and Quantum Cosmology · Physics 2024-11-15 Zhenglong Ban , Jiawei Chen , Jinsong Yang

We consider Loop Quantum Gravity(LQG) motivated $4D$ polymerized black hole and study shadow, quasinormal modes, and Hawking radiation. We obtain analytical expressions of photonsphere radius and shadow radius and study their qualitative…

General Relativity and Quantum Cosmology · Physics 2023-10-10 Sohan Kumar Jha

We present a study on quantum gravity effects on the shadow of a rotating black hole (BH) obtained in the setting of the asymptotically safe gravity. The rotating metric, which results from a static regular one recently presented in the…

General Relativity and Quantum Cosmology · Physics 2024-08-13 Luis A. Sánchez

We perform the shadow calculation of the loop quantum gravity motivated regular black hole recently proposed by Ashtekar, Olmedo and Singh (will be termed AOS black hole hereafter). In the process, we also construct the rotating loop…

General Relativity and Quantum Cosmology · Physics 2023-01-24 Saraswati Devi , Abhinove Nagarajan S , Sayan Chakrabarti , Bibhas Ranjan Majhi

With a semiclassical polymerization in the loop quantum gravity (LQG), the interior of Schwarzschild black holes provides a captivating single-horizon regular black hole spacetime. The shortage of rotating black hole models in loop quantum…

General Relativity and Quantum Cosmology · Physics 2022-11-23 Jitendra Kumar , Shafqat Ul Islam , Sushant G. Ghosh

In this paper we obtain an effective metric describing a regular and rotating magnetic black hole (BH) solution with a Yang-Mills electromagnetic source in Einstein-Yang-Mills (EYM) theory using the Newman--Janis algorithm via the…

General Relativity and Quantum Cosmology · Physics 2021-01-08 Kimet Jusufi , Mustapha Azreg-Aïnou , Mubasher Jamil , Shao-Wen Wei , Qiang Wu , Anzhong Wang

We study the evolution of a test scalar field on the background geometry of a regular loop quantum black hole (LQBH) characterized by two loop quantum gravity (LQG) correction parameters, namely, the polymeric function and the minimum area…

General Relativity and Quantum Cosmology · Physics 2022-08-09 Mehrab Momennia

The lack of rotating black hole models, which are typically found in nature, in loop quantum gravity (LQG) substantially hinders the progress of testing LQG from observations. Starting with a non-rotating LQG black hole as a seed metric, we…

General Relativity and Quantum Cosmology · Physics 2021-05-07 Suddhasattwa Brahma , Che-Yu Chen , Dong-han Yeom

In this work, starting from a spherically symmetric polytropic black hole, a rotating solution is obtained by following the Newman--Janis algorithm without complexification. Besides studying the horizon, the static conditions and causality…

General Relativity and Quantum Cosmology · Physics 2019-10-23 E. Contreras , J. M. Ramirez-Velasquez , Á. Rincón , G. Panotopoulos , P. Bargueño

An impressive feature of loop quantum gravity (LQG) is that it can elegantly resolve both the big bang and black hole singularities. By using the Newman-Janis algorithm, a regular and effective rotating self-dual black hole(SDBH) metric…

General Relativity and Quantum Cosmology · Physics 2024-06-03 Cheng Liu , Haiguang Xu , Hoongwah Siew , Tao Zhu , Qiang Wu , Yuanyuan Zhao

In this study, we investigate a static, spherically symmetric black hole (BH) within the framework of Loop Quantum Gravity (LQG) surrounded by quintessence field. Our comprehensive analysis shows that the interplay between quantum…

General Relativity and Quantum Cosmology · Physics 2025-05-20 Ahmad Al-Badawi , Faizuddin Ahmed , İzzet Sakallı

In this study, we investigate the black hole shadow of an exact black hole solution of the loop quantum gravity (LQG) theory. We discuss some of its optical characteristics after generalizing it to the rotational case, including null…

General Relativity and Quantum Cosmology · Physics 2025-10-21 Shu Luo , Cheng-Hao Li

The linear-quadratic Generalized uncertainty principle (LQG) is consistent with predictions of a minimum measurable length and a maximum measurable momentum put forth by various theories of quantum gravity. The quantum gravity effect is…

General Relativity and Quantum Cosmology · Physics 2026-01-01 Sohan Kumar Jha

Recently, for the first time, a metric of a static spherically symmetric generalized uncertainty inspired quantum black hole was derived. We apply the modified Newman-Janis algorithm to this metric and derive its rotating counterpart. We…

General Relativity and Quantum Cosmology · Physics 2026-03-26 Federica Fragomeno , Samantha Hergott , Saeed Rastgoo , Evan Vienneau

In this paper, we calculated the quasinormal modes (QNMs) of a charged non-commutative black hole in scalar, electromagnetic and gravitational fields by three methods. We gave the influence of non-commutative parameter $\theta$ and charge…

General Relativity and Quantum Cosmology · Physics 2023-05-12 Zening Yan , Xiaoji Zhang , Maoyuan Wan , Chen Wu

The recent convergence of gravitational-wave (GW) observations and black hole imaging provides complementary probes of strong-gravity dynamics. While the black hole shadow is typically modeled as a static feature, a dynamically perturbed…

High Energy Physics - Theory · Physics 2026-03-03 Reggie C. Pantig

Based on the geometric-optics correspondence between the parameters of a quasinormal mode and the conserved quantities along geodesics, we propose an equation to calculate the typical shadow radius for asymptotically flat and rotating black…

General Relativity and Quantum Cosmology · Physics 2020-07-08 Kimet Jusufi

A mathematically consistent rotating black hole model in loop quantum gravity (LQG) is yet lacking. The scarcity of rotating black hole solutions in LQG substantially hampers the development of testing LQG from observations, e.g., from the…

General Relativity and Quantum Cosmology · Physics 2023-01-25 Shafqat Ul Islam , Jitendra Kumar , Rahul Kumar Walia , Sushant G. Ghosh

We study the optical properties of spacetime around a novel regular black hole (BH) in general relativity (GR) coupled to nonlinear electrodynamics (NED), which is asymptotically flat. First, we study the angular velocity and Lyapunov…

General Relativity and Quantum Cosmology · Physics 2023-12-04 Muhammad Ali Raza , Furkat Sarikulov , Javlon Rayimbaev , Muhammad Zubair , Bobomurat Ahmedov , Zdenek Stuchlik
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