14 citations · 38 across the 10 of their papers we have counts for
12 papers
Acceleration radiation, quasinormal modes and quasi-bound states in generic rotating regular black holes
Uktamjon Uktamov, Ali Övgün, Reggie C. Pantig +1
We study horizon-brightened acceleration radiation for a neutral scalar field in separable Kerr-like rotating metrics with nonlinear-electrodynamic mass profiles. The principal bra…
Perturbations and quasinormal modes of black holes in general relativity coupled to nonlinear electrodynamics
Uktamjon Uktamov, Bakhtiyor Narzilloev, Ibrar Hussain +2
We investigate the quasinormal spectra and time-domain evolution of scalar, electromagnetic, and gravitational perturbations of the Einstein-Bronnikov black hole in Einstein gravit…
Horizon-Brightened Acceleration Radiation and the Deflection Angle Near a Degenerate Photon Sphere of Schwarzschild-like Quantum-Corrected Black Hole
Yunqiao Xu, Uktamjon Uktamov, Bobomurat Ahmedov +1
We investigate horizon-brightened acceleration radiation (HBAR) and a strong-deflection expansion for the deflection angle of light rays scattered in the vicinity of a degenerate p…
Spinning particle dynamics, epicyclic frequencies, and transient QPO signatures in Schwarzschild spacetime
Uktamjon Uktamov, Ali Övgün, Reggie C. Pantig +1
We study the motion of spinning test particles in Schwarzschild spacetime within the Mathisson--Papapetrou--Dixon pole--dipole approximation, imposing the Tulczyjew--Dixon spin sup…
Chaotic motion and power spectral density in Schwarzschild Bertotti-Robinson black hole spacetime
Yunqiao Xu, Uktamjon Uktamov, Pierros Ntelis +3
In this paper, we show that in weak field limit Schwarzschild Bertotti-Robinson black hole (Schwarzschild-BR BH) turns into Schwarzschild black hole immersed in external uniform ma…
Horizon-Brightened Acceleration Radiation and Optical Signatures of Generic Regular Black Holes from Nonlinear Electrodynamics
Uktamjon Uktamov, Ali Övgün, Reggie C. Pantig +1
We investigate horizon-brightened acceleration radiation (HBAR) and optical signatures for a broad class of regular black holes sourced by nonlinear electrodynamics. The spacetimes…
Acceleration Radiation of Freely Falling Atoms: Nonlinear Electrodynamic Effects
Ali Övgün, Reggie C. Pantig, Bobomurat Ahmedov +1
Motivated by the work of Scully \textit{et al.} [ \textcolor{blue}{Proc. Nat. Acad. Sci. 115, 8131 (2018)}] and Camblong \textit{et al.}[ \textcolor{blue}{Phys. Rev. D 102, 085010…
Charged particle bound orbits around magnetized Schwarzschild black holes: S2 star and hotspot applications
Uktamjon Uktamov, Mohsen Fathi, Javlon Rayimbaev
The dynamics of charged particles around magnetized black holes provide valuable insights into astrophysical processes near compact objects. In this work, we investigate the bound…
New analytical model of rotating black hole with dark matter halo: constraints from EHT observations and accretion disk
Uktamjon Uktamov, Sanjar Shaymatov, Bobomurat Ahmedov +1
In this paper, we start from a static black hole (BH) immersed in a Deanne-type dark matter (DM) halo and employ the Newman-Janis algorithm (NJA) to generate the rotating black hol…
New analytical model of static black hole with a dark matter halo and parametric constraints through quasiperiodic oscillations
Uktamjon Uktamov, Sanjar Shaymatov, Bobomurat Ahmedov +1
A novel analytical Schwarzschild-like black hole (BH) solution is derived. It exhibits a static BH with a dark matter (DM) halo characterized by a Dehnen-type density profile. This…
Particle dynamics and the accretion disk around a Self-dual Black Hole immersed in a magnetic field in Loop Quantum Gravity
Uktamjon Uktamov, Mirzabek Alloqulov, Sanjar Shaymatov +2
In this paper, we study the motion of magnetic dipoles and electrically charged particles in the vicinity of a self-dual black hole in Loop Quantum Gravity (LQG) immersed in an ext…
Orbits of particles with magnetic dipole moment around magnetized Schwarzschild black holes: Applications to S2 star orbit
Uktamjon Uktamov, Mohsen Fathi, Javlon Rayimbaev +1
This study provides a comprehensive analytical investigation of the bound and unbound motion of magnetized particles orbiting a Schwarzschild black hole immersed in an external asy…