Testing regular scale-dependent black hole space time using particle dynamics: Shadow and gravitational weak lensing
Ibrokhimov T. Turakhonov Z. Atamurotov F. Abdujabbarov A. Yerzhanov K. Bauyrzhan G. Abduvokhidov A.
February 2025Elsevier B.V.
Physics of the Dark Universe
2025#47
In this study, we examine the effects of weak gravitational lensing and determine the shadow radius around black holes within the regular scale-dependent spacetime, also accounting for both uniform and nonuniform plasma models. By analyzing various gravitational lens, we compare corrections to vacuum lensing due to gravitational effects within plasma and plasma inhomogeneity, finding that these effects could be observed in hot gas within galaxy clusters. Starting with the orbits of photons around a regular scale-dependent black hole, we investigate the shadow and weak gravitational lensing phenomena. Utilizing observational data from the Event Horizon Telescope (EHT) for SgrA*, we constrain on parameter within regular scale-dependent gravity. To connect our findings to observations, we examine the magnification and positioning of lensed images, along with the weak deflection angle and magnification for sources near different galaxies.
Black hole , Black hole shadow , Gravitational lensing , Modified gravity , Plasma medium
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National Research University TIIAME, Kori Niyoziy 39, Tashkent, 100000, Uzbekistan
Urgench State University, Kh. Alimdjan str. 14, Urgench, 220100, Uzbekistan
Research Center of Astrophysics and Cosmology, Khazar University, 41 Mehseti Street, AZ, Baku, 1096, Azerbaijan
University of Tashkent for Applied Sciences, Str. Gavhar 1, Tashkent, 100149, Uzbekistan
New Uzbekistan University, Movarounnahr Str. 1, Tashkent, 100000, Uzbekistan
Shahrisabz State Pedagogical Institute, Shahrisabz Str. 10, Shahrisabz, 181301, Uzbekistan
Tashkent State Technical University, Tashkent, 100095, Uzbekistan
L.N. Gumilyov Eurasian National University, Astana, 010008, Kazakhstan
Andijan State University, Universitet Str. 129, Andijan, 170100, Uzbekistan
National Research University TIIAME
Urgench State University
Research Center of Astrophysics and Cosmology
University of Tashkent for Applied Sciences
New Uzbekistan University
Shahrisabz State Pedagogical Institute
Tashkent State Technical University
L.N. Gumilyov Eurasian National University
Andijan State University
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