212 citations · 6.6k across the 163 of their papers we have counts for
15 papers · 1 filter
Observational Signatures: Shadow cast by the effective metric of photons for black holes with rational non-linear electrodynamics
Akhil Uniyal, Sayan Chakrabarti, Mohsen Fathi +1
This study explores spherically symmetric non-linear electrodynamics black holes and their effects on light propagation. We derive the governing metric, revealing radial coordinate…
Constraints via the Event Horizon Telescope for Black Hole Solutions with Dark Matter under the Generalized Uncertainty Principle Minimal Length Scale Effect
Ali Övgün, Lemuel John F. Sese, Reggie C. Pantig
Four spherically symmetric but non-asymptotically flat black hole solutions surrounded with spherical dark matter distribution perceived under the minimal length scale effect is de…
Constraints on charged Symmergent black hole from shadow and lensing
Beyhan Puliçe, Reggie C. Pantig, Ali Övgün +1
In this paper, we report on exact charged black hole solutions in symmergent gravity with Maxwell field. Symmergent gravity induces the gravitational constant , quadratic curvat…
Thin accretion disk images of the black hole in symmergent gravity
İlim İrfan Çimdiker, Ali Övgün, Durmuş Demir
In this paper, we study circular orbits, effective potential, and thin-accretion disk of a black hole in symmergent gravity within the Novikov-Thorne model in a way including the e…
Topological dyonic black holes of massive gravity with generalized quasitopological electromagnetism
Askar Ali, Ali Övgün
In this paper we investigate new dyonic black holes of massive gravity sourced by generalized quasitopological electromagnetism in arbitrary dimensions. We begin by deriving the ex…
Black hole surrounded by the pseudo-isothermal dark matter halo
Yi Yang, Dong Liu, Ali Övgün +2
The abundance of dark matter in the actual universe motivates us to construct the black hole spacetime enveloped by dark matter. In this paper, we derive a new spherically symmetri…
Rotating black hole mimicker surrounded by the string cloud
Yi Yang, Dong Liu, Ali Övgün +2
Traversable wormholes and regular black holes usually represent completely different scenarios. But in the black bounce spacetime they can be described by a same line element, whic…
Shadow and deflection angle of asymptotic, magnetically-charged, non-singular black hole
Yashmitha Kumaran, Ali Övgün
In this paper, we present a detailed analysis of an asymptotic, magnetically-charged, non-singular (AMCNS) black hole. By utilizing the Gauss-bonnet theorem, we aim to unravel the…
Quasinormal modes and greybody factors of symmergent black hole
Dhruba Jyoti Gogoi, Ali Övgün, Durmuş Demir
Symmergent gravity is an emergent gravity framework in which gravity emerges guided by gauge invariance, accompanied by new particles, and reconciled with quantum fields. In this p…
Investigating the Connection between Generalized Uncertainty Principle and Asymptotically Safe Gravity in Black Hole Signatures through Shadow and Quasinormal Modes
Gaetano Lambiase, Reggie C. Pantig, Dhruba Jyoti Gogoi +1
The links between the deformation parameter of the generalized uncertainty principle (GUP) to the two free parameters and of the running Newtonian coupling constant…
Nonlinearly charged black holes: Shadow and Thin-accretion disk
Akhil Uniyal, Sayan Chakrabarti, Reggie C. Pantig +1
In this paper, we explore the effect of non-linear electrodynamics (NLED) parameters and magnetic charges on various aspects of black holes, like how they bend light, how they emit…
4D scale-dependent Schwarzschild-AdS/dS black holes: study of shadow and weak deflection angle and greybody bounding
Ali Övgün, Reggie C. Pantig, Ángel Rincón
We investigate the shadow, deflection angle, and the greybody bounding of a Schwarzschild-AdS/dS black hole in scale-dependent gravity. We used the EHT data to constrain the parame…
Quasinormal Modes of Black holes in gravity
Dhruba Jyoti Gogoi, Ali Övgün, M. Koussour
In this work, we have studied the quasinormal modes of a black hole in a model of the type in gravity by using a rece…
Thermodynamics and logarithmic corrections of symmergent black holes
Riasat Ali, Rimsha Babar, Zunaira Akhtar +1
In this paper, we study quantum gravity effect on the symmergent black hole which is derived from quadratic-curvature gravity. To do so, we use the Klein-Gordon equation which is m…
Weak Deflection Angle, Hawking Radiation and Greybody Bound of Reissner-Nordström Black Hole Corrected by Bounce Parameter
Wajiha Javed, Mehak Atique, Reggie C. Pantig +1
In this study, we probe the weak lensing by a Reissner--Nordström black hole corrected by bounce parameter in plasma and dark matter mediums. For this, the optical geometry and the…