140 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- National University of UzbekistanUZ66 papers
- Ulugh Beg Astronomical InstituteUZ58 papers
- Tashkent State Technical University named after Islam KarimovUZ33 papers
- Zhejiang University of TechnologyCN26 papers
- Fudan UniversityCN21 papers
- Shanghai Astronomical ObservatoryCN20 papers
- Central Asian UniversityUZ18 papers
- Institute of Nuclear PhysicsUZ18 papers
- Urgench State UniversityUZ17 papers
- National University of Sciences and TechnologyPK15 papers
- New Uzbekistan UniversityUZ15 papers
- Inha University in TashkentUZ12 papers
23 papers · 1 filter
Observational constraints on a generalized equation of state model
M. Koussour, S. Bekov, A. Syzdykova +3
We investigate the cosmological implications of a generalized total equation of state (EoS) model by constraining its parameters using observational datasets to effectively charact…
Quasinormal modes and shadow of Schwarzschild black holes embedded in a Dehnen type dark matter halo exhibiting string cloud
Ahmad Al-Badawi, Sanjar Shaymatov
In this paper, we consider a static spherically symmetric black hole (BH) embedded in a Dehnen-(1,4,0) type dark matter (DM) halo in the presence of a cloud string. We examine and…
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…
Energy Extraction from Loop Quantum Black Holes: The Role of Magnetic Penrose Process and Quantum Gravity Effects with Astrophysical Insights
Tursunali Xamidov, Pankaj Sheoran, Sanjar Shaymatov +1
In this study, we explore the influence of quantum gravitational corrections, derived from Loop Quantum Gravity (LQG), on the efficiency of the magnetic Penrose process (MPP) in bl…
Gauge invariant perturbations in teleparallel Horndeski gravity
Bobomurat Ahmedov, Maria Caruana, Jackson Levi Said +4
We present in the form of a catalogue of the cosmological perturbations within the Bahamonde- Dialektopoulos-Levi Said (BDLS) theory, which serves as the teleparallel counterpart o…
Particle Dynamics and Quasi-Periodic Oscillations in the GUP-Modified Schwarzschild Spacetime: Constraint Using Micro-Quasars Data
Husanboy Hoshimov, Odil Yunusov, Farruh Atamurotov +2
In this work, we have worked out dynamical aspects for the particles moving around the GUP-corrected-Schwarzschild (S-GUP) black hole. We have calculated the innermost stable circu…
Constraints on Metric-Palatini Gravity from QPO Data
Elham Ghorani, Samik Mitra, Javlon Rayimbaev +4
In this work, we study metric-Palatini gravity extended by the antisymmetric part of the affine curvature. This gravity theory leads to general relativity plus a geometric Proca fi…
Thermodynamic Topology of Kiselev-AdS Black Holes within f (R, T) gravity
Saeed Noori Gashti, Mohammad Ali S. Afshar, Mohammad Reza Alipour +3
In this paper, we investigate the topological charge and the conditions for the existence of the photon sphere (PS) in Kiselev-AdS black holes within \(f(R, T)\) gravity. We employ…
Observational analysis of late-time acceleration in gravity
Kairat Myrzakulov, M. Koussour, O. Donmez +3
In this study, we explored late-time cosmology within an extended class of theories based on gravity. This theory generalizes gravity by incorporating a non-mini…
Constraints on anisotropic properties of the universe in gravity theory
A. Zhadyranova, M. Koussour, V. Zhumabekova +3
Motivated by anomalies in cosmic microwave background observations, we investigate the implications of gravity in Bianchi type-I spacetime, aiming to characterize the uni…
Exploring cosmological evolution and constraints in teleparallel gravity
M. Koussour, A. Altaibayeva, S. Bekov +3
This study explores the extension of teleparallel gravity within the framework of general relativity, introducing an algebraic function dependent on the torsion scalar .…
Geodesics structure and deflection angle of electrically charged black holes in gravity with a background Kalb-Ramond field
Ahmad al-Badawi, Sanjar Shaymatov, Izzet Sakallı
This article investigates the geodesic structure and deflection angle of charged black holes in the presence of a nonzero vacuum expectation value background of the Kalb-Ramond fie…
Observed jet power and radiative efficiency of black hole candidates in Kerr + PFDM model
Bakhtiyor Narzilloev, Ahmadjon Abdujabbarov, Bobomurat Ahmedov +1
In this research, we explore the electromagnetic energy emitted by astrophysical black holes within the Kerr+PFDM spacetime, a model encompassing rotating black holes surrounded by…
Late-time cosmology in gravity: Analytical solutions and observational fits
Yerlan Myrzakulov, O. Donmez, M. Koussour +3
In this study, we examined the late-time cosmic expansion of the universe within the framework of gravity, where denotes the non-metricity and represents th…
Four Black Holes Shadows
Yassine Sekhmani, Dhruba Jyoti Gogoi, Ratbay Myrzakulov +2
In this work, we examine the optical behaviors and thermodynamic phase structures using shadow analysis for four black holes. The study is conducte…
Topological AdS black holes surrounded by Chaplygin dark fluid: from stability to geometrothermodynamic analysis
Y. Sekhmani, G. G. Luciano, J. Rayimbaev +3
Implementing the concept of Dark Fluid with a Chaplygin-like equation of state within General Relativity, we construct a new higher-dimensional, static, and spherically symmetric a…
Signature flips in time-varying cosmological models with observational data
Yerlan Myrzakulov, M. Koussour, M. Karimov +1
In this study, we investigate signature flips within the framework of cosmological models featuring a time-varying vacuum energy term . Specifically, we consider the power-la…
Astrophysical insights into magnetic Penrose process around parameterized Konoplya-Rezzolla-Zhidenko black hole
Tursunali Xamidov, Sanjar Shaymatov, Pankaj Sheoran +1
In this study, we investigate the parameterized Konoplya-Rezzolla-Zhidenko (KRZ) black hole (BH) spacetime in the presence of an external asymptotically uniform magnetic field. We…
Constraining gravity with bulk viscosity
Y. Myrzakulov, O. Donmez, M. Koussour +3
We investigate the influence of bulk viscosity on late-time cosmic acceleration within an extended gravity framework, where the non-metricity is non-minimally coupl…
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…
Constraining study of charged gravastars solutions in symmetric teleparallel gravity
Faisal Javed, Arfa Waseem, G. Mustafa +4
This study explores the effect of charge on a special astronomical object known as a gravastar, which is viewed as an alternative to a black hole. Based on the conjecture put out b…
Radiation properties of the accretion disk around a black hole in Einstein-Maxwell-scalar theory
Mirzabek Alloqulov, Sanjar Shaymatov, Bobomurat Ahmedov +1
In this study, we explore the properties of a non-rotating black hole in the Einstein-Maxwell-scalar (EMS) theory and investigate the luminosity of the accretion disk surrounding i…
Shadows and weak gravitational lensing by the black hole in Einstein-Maxwell-scalar theory
Ahmad Al-Badawi, Mirzabek Alloqulov, Sanjar Shaymatov +1
In this paper, we investigate the optical properties of a charged black hole in Einstein-Maxwell-scalar (EMS) theory. We evaluate the shadow cast by the black hole and obtain analy…