Zobrazeno 1 - 10
of 4 374
pro vyhledávání: '"Hassanabadi, A."'
Optical Properties, Quasinormal Modes and Greybody factors of deformed AdS-Schwarzschild black holes
We investigate the temperature, photon and shadow radii, quasinormal modes (QNMs), greybody factors, and emission rates of deformed AdS black holes, focusing on the effects of the deformation parameter $ \alpha $ and control parameter $ \beta $. Incr
Externí odkaz:
http://arxiv.org/abs/2411.07173
This study examines the properties of a special regular black hole. This analysis investigates the Hawking temperature, remnant radius and mass, as well as the effect of parameter $\xi$ on thermodynamic quantities like entropy, heat capacity, and fre
Externí odkaz:
http://arxiv.org/abs/2408.04704
In this study, we explore a spherically symmetric charged black hole with a cosmological constant under the influence of a Kalb--Ramond field background. We compute the photon sphere and shadow radii, validating our findings using observational data
Externí odkaz:
http://arxiv.org/abs/2408.03090
Having in mind the significance of parity (reflection) in various areas of physics, the single-mode and two-mode Wigner algebras are considered adding to them a reflection operator. The associated deformed $su(2)$ algebra, $su_{\nu}(2)$, and the defo
Externí odkaz:
http://arxiv.org/abs/2407.12157
Publikováno v:
Phys. Lett. B 859 (2024) 139125
In this work, we study a static, spherically charged AdS black hole within a modified cosmological Chaplygin gas (MCG), adhering to the calorific equation of state, as a unified dark fluid model of dark energy and dark matter. We explore the influenc
Externí odkaz:
http://arxiv.org/abs/2407.12142
In this work, we investigate a spherically symmetric charged black hole in the presence of a Kalb--Ramond field background. We calculate the photon sphere and shadow radii and, corroborating our results, we constrain them from observational data from
Externí odkaz:
http://arxiv.org/abs/2407.07017
In this work, we explore a Schwarzschild-like black hole within the framework of metric--affine bumblebee gravity. First, we investigate the behavior of the Kretschmann scalar and singularities in this modified gravity approach. Next, we introduce a
Externí odkaz:
http://arxiv.org/abs/2407.05321
Publikováno v:
JCAP 08 (2024) 041
The Event Horizon Telescope (EHT) imaging of the supermassive black holes at the centers of Messier 87 galaxy and the Milky Way galaxy marks a significant step in observing the photon rings and central brightness depression that define the optical ap
Externí odkaz:
http://arxiv.org/abs/2406.07300
In this paper, we investigate the influence of anti-symmetric tensor effects, which trigger the Lorentz symmetry breaking, on charged spherically symmetric black holes. Initially, we address an overview of the model, laying the groundwork for derivin
Externí odkaz:
http://arxiv.org/abs/2404.10721
Publikováno v:
Phys. Dark Univ. 46 (2024) 101617
In this work, we explore the thermodynamic topology of phantom AdS black holes in the context of massive gravity. To this end, we evaluate these black holes in two distinct ensembles: the canonical and grand canonical ensembles (GCE). We begin by exa
Externí odkaz:
http://arxiv.org/abs/2404.08243