Gravitational signatures of a non-commutative stable black hole

被引：28

作者：

Heidari, N. ^{[1
]}

Hassanabadi, H. ^{[1
,2
]}

Araujo Filho, A. A. ^{[3
]}

Kriz, J. ^{[2
]}

Zare, S. ^{[2
]}

Porfirio, P. J. ^{[4
]}

机构：

[1] Shahrood Univ Technol, Fac Phys, Shahrood, Iran

[2] Univ Hradec Kralove, Dept Phys, Rokitanskeho 62, Hradec Kralove 50003, Czech Republic

[3] Univ Valencia, Ctr Mixto, Dept Fis Teor, CSIC, Valencia 46100, Spain

[4] Univ Fed Paraiba, Dept Fis, Caixa Postal 5008, BR-58051970 Joao Pessoa, PB, Brazil

来源：

PHYSICS OF THE DARK UNIVERSE | 2024年 / 43卷

关键词：

Non-commutativity; Black hole; Shadows; Geodesics; QUASI-NORMAL MODES; GAUGE-THEORY; WKB APPROACH; OSCILLATIONS; GRAVITY; SHADOW; THERMODYNAMICS; EVOLUTION; STARS;

D O I：

10.1016/j.dark.2023.101382

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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 quasinormal modes of massless scalar perturbations using two approaches: the WKB approximation and the Poschl-Teller fitting method. Our results indicate that stronger non-commutative parameters lead to slower damping oscillations of gravitational waves and higher partial absorption cross sections. Furthermore, we study the geodesics of massless and massive particles, highlighting that the non-commutative parameter (R) significantly impacts the paths of light and event horizons. Also, we calculate the shadows, which show that larger values of (R) correspond to larger shadow radii, and provide some constraints on (R) applying the observation of Sgr A* from the Event Horizon Telescope. Finally, we explore the deflection angle in this context.

引用

页数：13

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