Optical Signatures of a Black Hole in Effective Quantum Gravity
Abstract
In this article, we present an investigation of observational signatures of a black hole (BH) in effective quantum gravity (EQG), particularly gravitational weak lensing and shadow analyses with the assumption that the BH is surrounded by uniform and non-uniform plasma. First, we review the spacetime by comparing it with well-known BH spacetimes such as Schwarzschild and Reissner--Nordström BHs. Subsequently, we explore the effect of the uniform and non-uniform plasma on the BH shadow. The results indicate that shadow radii decrease under the influence of the BH charge and both uniform and non-uniform plasma parameters. In addition, we obtain theoretical constraints on the spacetime parameters using observational data from the Event Horizon Telescope (EHT) collaboration. Finally, we study gravitational weak lensing around the BH in EQG surrounded by uniform and non-uniform plasma. It was found that increasing the uniform plasma frequency leads to a rise in the deflection angle and vice versa for the non-uniform plasma.
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BibTeX
@misc{khasanov2026optical,
title = {{Optical Signatures of a Black Hole in Effective Quantum Gravity}},
author = {Jonibek Khasanov and Xuwei Zhang and Mirzabek Alloqulov and Sanjar Shaymatov and Chen Zhou and Chengxun Yuan},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.16721},
eprint = {2610.16721},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.16721},
}
RIS
TY - UNPB
TI - Optical Signatures of a Black Hole in Effective Quantum Gravity
AU - Jonibek Khasanov
AU - Xuwei Zhang
AU - Mirzabek Alloqulov
AU - Sanjar Shaymatov
AU - Chen Zhou
AU - Chengxun Yuan
PY - 2026
DA - 2026/10/12
PB - arXiv
DO - 10.48550/arxiv.2610.16721
UR - https://arxiv.org/abs/2610.16721
AB - In this article, we present an investigation of observational signatures of a black hole (BH) in effective quantum gravity (EQG), particularly gravitational weak lensing and shadow analyses with the assumption that the BH is surrounded by uniform and non-uniform plasma. First, we review the spacetime by comparing it with well-known BH spacetimes such as Schwarzschild and Reissner--Nordström BHs. Subsequently, we explore the effect of the uniform and non-uniform plasma on the BH shadow. The results indicate that shadow radii decrease under the influence of the BH charge and both uniform and non-uniform plasma parameters. In addition, we obtain theoretical constraints on the spacetime parameters using observational data from the Event Horizon Telescope (EHT) collaboration. Finally, we study gravitational weak lensing around the BH in EQG surrounded by uniform and non-uniform plasma. It was found that increasing the uniform plasma frequency leads to a rise in the deflection angle and vice versa for the non-uniform plasma.
ER -