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Open AccessCircular orbits and accretion disk around AdS black holes surrounded by dark fluid with Chaplygin-like equation of state
In the present work we study the geodesic motion and accretion process of a test particle near an Anti-de Sitter (ADS) BH surrounded by a dark fluid with a Chaplygin-like equation. Within the defined paradigm,...
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Article
Open AccessTesting strong gravitational lensing effects of various supermassive compact objects for the static and spherically symmetric hairy black hole by gravitational decoupling
We investigate the strong gravitational lensing effects of various supermassive compact objects for the static and spherically symmetric hairy black hole by gravitational decoupling. To do this purpose, we fir...
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Article
Open AccessStudy of self-bound compact stars in \(f(\mathscr {T})\) gravity and observational constraints on the model parameters
The present study is based on \(f(\mathscr {T})\) f ( ...
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Article
Open AccessStrong gravitational lensing by \(Sgr A^*\) and \(M87^*\) black holes embedded in dark matter halo exhibiting string cloud and quintessential field
We investigate the strong gravitational lensing phenomena caused by a black hole with a dark matter halo in the presence of cloud string and quintessence. This study examines strong gravitational lensing with ...
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Article
Diagnostic and comparative analysis of dark energy models with q(z) parametrizations
This manuscript presents a diagnostic analysis of three dark energy models resulting from the parametrization of the deceleration parameter. These models exhibit intriguing features, including late-time accele...
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Article
Open AccessStrong gravitational lensing, quasi-periodic oscillations and constraints from EHT observations for quantum-improved charged black hole
We investigate strong gravitational lensing by quantum-improved charged black holes characterized by an additional parameter denoted as $$\ome...
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Article
Open AccessInsights into dynamical evolution and stability of thin-shell configurations through acoustic black holes
The main goal of this work is to use the cut and paste method to match the inner flat and outer acoustic Schwarzschild black holes to examine the geometry of a thin-shell. Moreover, the study uses the Klein–Go...
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Article
Structural features of anisotropic spheres with quintessence in pure Lovelock gravity
In this paper, we study quintessence compact stars in the paradigm of pure Lovelock gravity. We derive the field equations using a spherically symmetric space–time. Specifically, we discuss the equivalence of ...
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Open AccessCosmological test of dark energy parameterizations in Hořava–Lifshitz gravity
In this work, we assume that the FLRW universe, which is filled with dark matter along with dark energy, is in the framework of Hořava–Lifshitz (HL) gravity. The dark energy is considered as the linear (Model ...
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Article
Open AccessImpact of quintessence and cloud of strings on self-consistent d-dimensional charged thin-shell wormholes
This article evaluates the stability constraints of higher-dimensional geometry of thin-shell wormholes developed from the two equivalent copies of inner and outer d-dimensional charged anti-de Sitter black holes...
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Parametrization of the deceleration parameter in a flat FLRW universe: constraints and comparative analysis with the \(\Lambda \) CDM paradigm
The constraint of the deceleration parameter associated with dark energy stands as one of the most captivating subjects in the present cosmological framework. This study centers on the parametric reconstructio...
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Open AccessThe effect of modified hybrid and logarithmic teleparallel gravity on the interior solutions of compact stars
This study aims to investigate spherically symmetric anisotropic solutions that describe compact stellar objects in the modified Rastall teleparallel (MRT) theory of gravity. In order to achieve this goal, we ...
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Article
Open AccessExploring tidal force effects and shadow constraints for Schwarzschild-like black hole in Starobinsky–Bel-Robinson gravity
The current manuscript deals with the tidal force effects, geodesic deviation, and shadow constraints of the Schwarzschild-like black hole theorised in Starobinsky–Bel-Robinson gravity exhibiting M-theory comp...
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Open AccessPhysical analysis of Rastall PFRF black hole through accretion process
The adiabatic accretion onto the charged black hole surrounded by perfect fluid radiation field (PFRF) in Rastall gravity is addressed in this manuscript. For this purpose, mass accretion rate
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Open AccessCosmological tests of \(f(R,G,\mathcal {T})\) dark energy model in FRW universe
The paper is devoted to study the observational signatures of \(f(R,G,\mathcal {T})\)
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Open AccessMatter accretion onto the magnetically charged Euler–Heisenberg black hole with scalar hair
This paper deals with astrophysical accretion onto the magnetically charged Euler–Heisenberg black holes with scalar hair. We examine the accretion process of a variety of perfect fluids, including polytropic ...
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Article
Data analysis of three parameter models of deceleration parameter in FLRW universe
Constraining the dark energy deceleration parameter is one of the fascinating topics in the recent cosmological paradigm. This work aims to reconstruct the dark energy using parametrization of the deceleration...
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Article
Effect of scalar field on dynamical evolution of thin-shell with hairy Schwarzschild black hole
The major goal of this study is to investigate the structure of a thin-shell by matching the inner flat and exterior hairy Schwarzschild black holes using Visser’s approach. Then, by using the equation of moti...
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Article
Open AccessObservational constraints on a logarithmic scalar field dark energy model and black hole mass evolution in the Universe
We propose a logarithmic parametrization form of energy density for the scalar field dark energy in the framework of the standard theory of gravity, which supports the necessary transition from the decelerated...
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Article
Open AccessOrbital motion and quasi-periodic oscillations with periastron and Lense–Thirring precession of slowly rotating Einstein–Æther black hole
We study the orbital and oscillatory motion of test particles moving around slowly rotating first and second kinds of Einstein–Æther black holes. In relation to the black hole parameters, we find analytical so...
