English
Related papers

Related papers: Constraining Black Hole Parameters in Non-Commutat…

200 papers

With the help of CUDA high-performance numerical codes exploited in machine learning, we investigate the shadow aspect of new rotating and charged black holes using the Dunkl derivative formalism. Precisely, we first establish the…

General Relativity and Quantum Cosmology · Physics 2025-10-21 Saad Eddine Baddis , Adil Belhaj , Hajar Belmahi , Maryem Jemri

Combining high-performance CUDA numerical codes with the Hamilton--Jacobi formalism, we investigate the shadows properties of rotating charged Euler--Heisenberg black holes in the presence of global monopoles. Then, we discuss the…

General Physics · Physics 2026-04-17 S. E. Baddis , A. Belhaj , H. Belmahi , S. E. Ennadifi , M. Jemri

This work investigates several key aspects of a non--commutative theory with mass deformation. We calculate thermodynamic properties of the system and compare our results with recent literature. We examine the \textit{quasinormal} modes of…

General Relativity and Quantum Cosmology · Physics 2023-11-30 N. Heidari , H. Hassanabadi , A. A. Araújo Filho , J. Kriz , S. Zare , P. J. Porfírio

The study of black hole shadows provides a powerful tool for testing the predictions of general relativity and exploring deviations from the standard Kerr metric in the strong gravitational field regime. Here, we investigate the shadow…

General Relativity and Quantum Cosmology · Physics 2025-11-13 Temurbek Mirzaev , Bobomurat Ahmedov , Cosimo Bambi

In this paper, the shadow casted by the rotating black hole inspired by noncommutative geometry is investigated. In addition to the dimensionless spin parameter $a/M_{0}$ with $M_{0}$ black hole mass and inclination angle $i$, the…

General Relativity and Quantum Cosmology · Physics 2015-08-18 Shao-Wen Wei , Peng Cheng , Yi Zhong , Xiang-Nan Zhou

By considering the celestial light source and the thin disk source, we employ the backward ray-tracing method to carefully study the shadow, inner shadow and observational images of the non-singular rotating black holes in loop quantum…

General Relativity and Quantum Cosmology · Physics 2024-10-30 Guo-Ping Li , He-Bin Zheng , Ke-Jian He , Qing-Quan Jiang

The Event Horizon Telescope (EHT) is taking the first images of black holes resolved at horizon scales to measure their shadows and probe accretion physics. A promising avenue for testing the hypothesis that astrophysical black holes are…

High Energy Astrophysical Phenomena · Physics 2020-06-17 Lia Medeiros , Dimitrios Psaltis , Feryal Özel

The motion of photons around the Kerr-Newman-dS black hole surrounded by quintessence and a cloud of strings is investigated. The existence of the Carter constant leads to that of unstable circular photon orbits on a two-dimensional plane…

General Relativity and Quantum Cosmology · Physics 2023-10-31 Wen-Fu Cao , Wen-Fang Liu , Xin Wu

We consider black hole interiors of arbitrary genus number within the paradigm of non-commutative geometry. The study is performed in two ways: One way is a simple smearing of a matter distribution within the black hole. The resulting…

General Relativity and Quantum Cosmology · Physics 2020-07-10 Mathew Schneider , Andrew DeBenedictis

In this work, we investigate the shadow properties of the Kerr-Newman-Anti-de Sitter black hole coupled to a nonlinear electrodynamics. We construct the shadow by employing the celestial coordinate approach for observers located at finite…

General Relativity and Quantum Cosmology · Physics 2025-08-20 Mohsen Fathi

We consider the rotating generalization of the Bardeen black hole solution in the presence of cloud of strings (CoS). The parameter space for which the black hole horizon exists is determined. We also study the static limit surface and the…

General Relativity and Quantum Cosmology · Physics 2023-11-01 Bijendra Kumar Vishvakarma , Dharm Veer Singh , Sanjay Siwach

We investigate the geometric and physical properties of an anti-de Sitter (AdS) black hole space-time coupled by a cloud of strings and surrounded by a quintessence-like fluid, all within the framework of non-commutative (NC) geometry. From…

General Relativity and Quantum Cosmology · Physics 2025-08-04 Faizuddin Ahmed , Allan. R. P. Moreira , Abdelmalek Bouzenada

We examine the behavior of non-commutative Schwarzschild black holes in the context of massive gravity. According to the investigation, corresponding to a minimal mass, the black hole can have two horizons, one horizon, or no horizon at…

General Relativity and Quantum Cosmology · Physics 2024-04-17 Piyali Bhar , Dhruba Jyoti Gogoi , Supakchai Ponglertsakul

Black holes in noncommutative geometry background are considered to be quantized in accordance with the holographic principle. Incomplete gamma function involving the effective black hole mass is replaced by a discrete sum. The mass…

High Energy Physics - Theory · Physics 2012-06-27 Jong-Phil Lee

This paper investigates the shadow of a charged rotating non-commutative black hole. For this purpose, we first formulate the null geodesics and study the effects of non-commutative charge on the photon orbit. We then explore the effect of…

General Relativity and Quantum Cosmology · Physics 2016-12-21 M. Sharif , Sehrish Iftikhar

We study the black hole's shadow for Schwarzschild - de Sitter and Kerr - de Sitter metrics with the contribution of the cosmological constant \Lambda. Based on the reported parameters of the M87* black hole shadow we obtain constraints for…

General Relativity and Quantum Cosmology · Physics 2021-01-29 A. Stepanian , Sh. Khlghatyan , V. G. Gurzadyan

Recently introduced classical theory of gravity in non-commutative geometry is studied. The most general (four parametric) family of $D$ dibensional static spherically symmetric spacetimes is identified and its properties are studied in…

General Relativity and Quantum Cosmology · Physics 2007-05-23 C. Klimcik , P. Kolnik , A. Pompos

Embedded diagrams are drawn for investigating the black hole of Kerr and non-Kerr metric. Kerr black holes are characterized by masses $M$ and spin parameters $a$. Non-Kerr black holes also are characterized by the deformation parameters…

General Relativity and Quantum Cosmology · Physics 2016-07-26 Yong-Jin Han , Hyun-Chul Lee

Noncommutative geometry, an offshoot of string theory, replaces point-like objects by smeared objects. The resulting uncertainty may cause a black hole to be observationally indistinguishable from a traversable wormhole, while the latter,…

General Relativity and Quantum Cosmology · Physics 2020-04-15 Peter K. F. Kuhfittig , Vance D. Gladney

In this paper, the shadows cast by non-rotating and rotating modified gravity black holes are investigated. In addition to the black hole spin parameter $a$ and the inclination angle $\theta$ of observer, another parameter $\alpha$…

General Relativity and Quantum Cosmology · Physics 2019-04-08 Hui-Min Wang , Yu-Meng Xu , Shao-Wen Wei
‹ Prev 1 2 3 10 Next ›