Abstract In this article, we consider a regular black hole (BH) surrounded by quintessence in the scalar–vector–tensor (S–V–T) version of modified gravity (MOG). We examine implications presence scalar field on astrophysical observable such as quasinormal modes (QNMs), greybody factors (GFs), and thermodynamics. vicinity MOG BH with quintessence, calculate effective potential generated electromagnetic perturbation, then use sixth order WKB method to compute frequencies QNMs under these...

Abstract In this study, we investigated the optical properties of charged black holes within Einstein-Maxwell-scalar (EMS) theory. We evaluated shadow cast by these and obtained analytical solutions for both radius photon sphere that shadow. observed hole parameters γ β influence holes. also found increase as a consequence presence parameter . Interestingly, decreases first then remains unchanged owing to impact Finally, analyzed weak gravitational lensing total magnification lensed images...

Abstract In this paper, we derive a novel Schwarzschild-like black hole (BH) solution describing static and asymptotically flat BH surrounded by dark matter (DM) halo with Dehnen-type density distribution in the surrounding environment. We investigate properties of obtained studying curvature energy conditions Einstein gravity. Furthermore, explore features embedded DM profile analyzing timelike geodesics particles along observable properties.

Abstract We investigate shadows, deflection angle, quasinormal modes (QNMs), and sparsity of Hawking radiation the Schwarzschild string cloud black hole’s solution after applying quantum corrections required by Generalised Uncertainty Principle (GUP). First, we explore shadow’s behaviour in presence a using three alternative GUP frameworks: linear quadratic (LQGUP), (QGUP), GUP. then used weak field limit approach to determine effect parameters on light with computation based Gauss–Bonnet...

Abstract A hairy black hole (HBH) emerges due to matter surrounding the Schwarzschild metric when using Extended Gravitational Decoupling (GD) approach. The fermionic greybody factors (GFs) and quasinormal modes (QNMs) as well Hawking spectra sparsity of HBH solutions are investigated. We consider massive massless spin-1/2 fermions, along with spin-3/2 fermions. equations effective potential for fermions different spins derived in spacetime. Then, rigorous bound method is used calculate GFs....

Abstract We investigate the impact of modified gravity (MOG) field and quintessence scalar on horizon evolution, black hole (BH) shadow weak gravitational lensing around a static spherically symmetric BH. first begin to write BH metric associated with MOG parameter field. then determine obtain numerical solutions for photon sphere radius. show that ( α ) c parameters have significant sphere. Based analysis, we further combined effects can increase values radii. also constraints by applying...

Abstract This article investigates the geodesic structure and deflection angle of charged black holes in presence a nonzero vacuum expectation value background Kalb–Ramond field. Topics explored include null timelike geodesics, energy extraction by collisions, motion particles. The photon sphere radius is calculated plotted to examine effects both hole charge ( Q ) Lorentz-violating parameter b on geodesics. effective potential for geodesics analyzed, second-order analytical orbits are...

In this paper, we study the greybody factors (GFs) for fermions with different spins and bosons in regular black hole (BH) predicted by a non-minimal Einstein-Yang-Mills (EYM) theory. We investigate effect of magnetic charge on effective potentials GFs. For purpose, consider Dirac Rarita-Schwinger, as well Klein-Gordon equations. First, equation curved spacetime massive massless spin-1/2 fermions. then separate into sets radial angular Using analytical solution equation, Schr\"{o}dinger-like...

Abstract In this manuscript, we delve into an analytic and numerical probe of shadow with different accretion models, quasinormal modes, Hawking radiation, gravitational lensing to study observational impacts quantum effect introduced through linear-quadratic GUP(LQG). Our investigation reveals that the shadows LQG-modified black holes are smaller brighter than Schwarzschild holes. To examine impact correction on mode, GUP-modified explored under scalar electromagnetic field perturbation....

From an astrophysical perspective, the composition of black holes (BHs), dark matter (DM), and energy can be intriguing physical system. In this study, we consider Schwarzschild BHs embedded in a Dehnen-type DM halo exhibiting quintessential field. This study examines horizons, shadows, deflection angle, quasinormal modes (QNMs) effective BH spacetime how they are affected by sector. The embodied field possesses two horizons: event horizon cosmological horizon. We demonstrate that all sector...

In this paper, we investigate the geodesic motion and scalar perturbations of Ay\'on-Beato-Garc\'ia (ABG) black hole (BH) coupled with a cloud strings (CS). By employing effective potential approach, analyze trajectories massless massive test particles around regular BH solution. The interplay between nonlinear electrodynamics (NLED) CS significantly modifies spacetime geometry, resulting in distinct dynamical properties for particles. behavior null timelike geodesics, including their...

Abstract From an astrophysical perspective, the composition of black holes (BHs), dark matter (DM), and energy can be intriguing physical system. In this study, we consider Schwarzschild BHs embedded in a Dehnen-type DM halo exhibiting quintessential field. This study examines horizons, shadows, deflection angle, quasinormal modes (QNMs) effective BH spacetime how they are affected by sector. The embodied field possesses two horizons: event horizon cosmological horizon. We demonstrate that...