237 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- National University of UzbekistanUZ20 papers
- Tashkent State Technical University named after Islam KarimovUZ13 papers
- Tashkent Institute of Irrigation and Agricultural Mechanization EngineersUZ12 papers
- Ulugh Beg Astronomical InstituteUZ11 papers
- Central Asian UniversityUZ10 papers
- New Uzbekistan UniversityUZ9 papers
- National University of Sciences and TechnologyPK8 papers
- Institute of Nuclear PhysicsUZ7 papers
- State University of TetovaMK6 papers
- Joint Institute for Nuclear ResearchRU4 papers
- Samarkand State University named after Sharof RashidovUZ4 papers
- University of Hradec KrálovéCZ4 papers
30 papers
Gravitational perturbations of a regular T-duality inspired black hole: Quasinormal modes, excitation factors, and time-domain evolution
Bekir Can Lütfüoğlu, Mardon Abdullaev, Javlon Rayimbaev +2
We study axial gravitational perturbations of the neutral regular black hole generated by a non-local, T-duality-inspired zero-point length and the associated gravitational self-en…
CMB Test of the Higgs Origin of Dark-Photon Dark Matter
Imtiaz Khan, Salvatore Capozziello, G. Mustafa +2
Laboratory searches determine the mass and kinetic mixing of dark-photon dark matter. The CMB isocurvature probes how its abundance depends on inflationary initial conditions. We f…
A First-Order Eikonal Framework for Quasinormal Modes, Shadows, Strong Lensing, and Grey-Body Factors in a Scalarized Black-Hole Metric
Bekir Can Lütfüoğlu, Javlon Rayimbaev, Sardor Murodov +2
We construct an analytic geodesic-optics description of quasinormal ringing, black-hole shadows, strong lensing, and grey-body factors for the static spherical metric introduced in…
Ringing Regularity: Gravitational Perturbations and Quasinormal Modes of Einasto-Supported Black Holes
Bekir Can Lütfüoğlu, Javlon Rayimbaev, Sardor Murodov +2
We investigate axial gravitational perturbations and quasinormal modes of regular black holes supported by an Einasto distribution of matter. Halo matter not only removes the centr…
Two types of quasinormal modes of Casadio-Fabbri-Mazzacurati brane-world black holes
Bekir Can Lütfüoğlu, Sardor Murodov, Mardon Abdullaev +3
Using the convergent Leaver method, we investigate the quasinormal modes of a massive scalar field propagating in the background of the Casadio--Fabbri--Mazzacurati (CFM) brane-wor…
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…
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…
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…
Effect of magnetized plasma on shadow and gravitational lensing of a Reissner-Nordström black hole
Yovqochev Pahlavon, Farruh Atamurotov, Kimet Jusufi +2
We explore the influence of the axion-plasmon on the optical properties of the charged black hole and show how the axion-plasmon coupling modifies the motion of photons around the…
Phase structure of charged AdS black holes surrounded by exotic fluid with modified Chaplygin equation of state
Y. Sekhmani, J. Rayimbaev, G. G. Luciano +2
By considering the concept of the modified Chaplygin gas (MCG) as a single fluid model unifying dark energy and dark matter, we construct a static, spherically charged black hole (…
Quasiperiodic oscillations around hairy black holes in Horndeski gravity
Javlon Rayimbaev, Konstantinos F. Dialektopoulos, Furkat Sarikulov +1
Testing gravity theories and their parameters using observations is an important issue in relativistic astrophysics. In this context, we investigate the motion of test particles an…
Probing Geometric Proca in Metric-Palatini Gravity with Black Hole Shadow and Photon Motion
Elham Ghorani, Beyhan Puliçe, Farruh Atamurotov +3
Extended metric-Palatini gravity, quadratic in the antisymmetric part of the affine curvature, is known to lead to the general relativity plus a geometric Proca field. The geometri…
Constraining study of circular orbits and accretion disk around nonlinear electrodynamics black hole
A. Ditta, G. Mustafa, G. Abbas +2
The very latest observation of supermassive black hole (BH) by the Event Horizon Telescope (EHT) provides the accretion onto BHs is an interesting study in the theory of grav…
Quantum effects on the black hole shadow and deflection angle in presence of plasma
Farruh Atamurotov, Mubasher Jamil, Kimet Jusufi
In this paper, optical properties of renormalization group improved (RGI) Schwarzschild black hole (BH) are investigated in plasma medium. Starting from the equations of motions in…
Shadow and quasinormal modes of the Kerr-Newman-Kiselev-Letelier black hole
Farruh Atamurotov, Ibrar Hussain, G. Mustafa +1
We investigate the null geodesics and the shadow cast by the Kerr-Newman-Kiselev-Letelier (KNKL) black hole for the equation of state parameter and for different values…
Shadows and gravitational weak lensing by the Schwarzschild black hole in the string cloud background with quintessential field
Ghulam Mustafa, Farruh Atamurotov, Ibrar Hussain +2
In this work, we observe that in the presence of the string cloud parameter and the quintessence parameter , with the equation of state parameter the radius o…
Axion-plasmon or magnetized plasma effect on an observable shadow and gravitational lensing of a Schwarzschild black hole
Farruh Atamurotov, Kimet Jusufi, Mubasher Jamil +2
In this paper, we study the influence of the axion-plasmon, as proposed in (Phys. Rev. Lett. 120, 181803 (2018)) on the optical properties of the Schwarzschild black hole. Our aim…
Charged black hole in Einstein-Gauss-Bonnet gravity: Particle motion, plasma effect on weak gravitational lensing and centre-of-mass energy
Farruh Atamurotov, Sanjar Shaymatov, Pankaj Sheoran +1
We study the motion of charged and spinning particles and photons in the charged Einstein-Gauss-Bonnet (EGB) black hole vicinity. We determine the radius of the innermost stab…
Shadow and deflection angle of charged rotating black hole surrounded by perfect fluid dark matter
Farruh Atamurotov, Uma Papnoi, Kimet Jusufi
We analysed the shadow cast by charged rotating black hole (BH) in presence of perfect fluid dark matter (PFDM). We studied the null geodesic equations and obtained the shadow of t…
Particle acceleration around rotating Einstein-Born-Infeld black hole and plasma effect on gravitational lensing
Gulmina Zaman Babar, Farruh Atamurotov, Shafqat Ul Islam +1
We consider a time-like geodesics in the background of rotating Einstein-Born-Infeld (EBI) black hole to examine the horizon and ergosphere structure. The effective potential that…
Optical properties of Kerr-Newman spacetime in the presence of plasma
Gulmina Zaman Babar, Abdullah Zaman Babar, Farruh Atamurotov
We have studied the null geodesics in the background of the Kerr-Newman black hole veiled by a plasma medium using the Hamilton-Jacobi method. The in uence of black hole's charge a…
Some Leibniz bimodules of
T. Kurbanbaev, R. Turdibaev
We study complex finite-dimensional Leibniz algebra bimodule over that as a Lie algebra module is split into a direct sum of two simple -modules.…
Dynamics of the tri-nuclear system at spontaneous fission of Cf
R. B. Tashkhodjaev, A. K. Nasirov, E. Kh. Alpomeshev
To describe of dynamics of ternary fission of Cf an equation of motion of the tri-nuclear system is calculated. The fission of the Ni+Ca+Sn channel wa…