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
12 papers · 1 filter
Testing relativistic reflection models with GRMHD simulations of accreting black holes
Swarnim Shashank, Shafqat Riaz, Askar B. Abdikamalov +1
X-ray reflection spectroscopy is currently one of the leading techniques for studying the inner part of accretion disks around black holes, measuring black hole spins, and even tes…
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…
Quasiperiodic oscillations, weak field lensing and shadow cast around black holes in Symmergent gravity
Javlon Rayimbaev, Reggie C. Pantig, Ali Övgün +2
In this work, we perform a systematic study of the symmergent gravity in a black hole environment. The symmergent gravity, an emergent gravity model in which gravity emerges in a w…
Probing bumblebee gravity with black hole X-ray data
Jiale Gu, Shafqat Riaz, Askar B. Abdikamalov +2
Bumblebee gravity is one of the simplest gravity theories with spontaneous Lorentz symmetry breaking. Since we know a rotating black hole solution in bumblebee gravity, we can pote…
Testing regular black holes with X-ray and GW data
Shafqat Riaz, Swarnim Shashank, Rittick Roy +5
The presence of spacetime singularities in physically relevant solutions of the Einstein Equations is normally interpreted as a symptom of the breakdown of classical general relati…
Impact of ionization and electron density gradients in X-ray reflection spectroscopy measurements
Gitika Mall, Ashutosh Tripathi, Askar B. Abdikamalov +1
The models currently used for the analysis of the reflection spectra of black holes usually assume a disk with constant ionization and electron density. However, there is some deba…
Spinning test particle motion around a rotating wormhole
Farrux Abdulxamidov, Carlos A. Benavides-Gallego, Wen-Biao Han +2
In this work, we investigated the motion of spinning test particles around a rotating wormhole, extending, in this way, the previous work of Benavides-Gallego et al. in [Phys. Rev.…
Black Hole Spin Measurements Based on a Thin Disc Model with Finite Thickness I. An example study of MCG-06-30-15
Jiachen Jiang, Askar B. Abdikamalov, Cosimo Bambi +1
We present a re-analysis of the XMM-Newton and NuSTAR observing campaign for the well-studied, X-ray-bright AGN MCG-06-30-15. In particular, we consider a disc model with finite th…
Extending the weak cosmic censorship conjecture to the charged Buchdahl star by employing the gedanken experiments
Sanjar Shaymatov, Naresh Dadhich
In this paper, we wish to investigate the weak cosmic censorship conjecture (WCCC) for the non black hole object, Buchdahl star and test its validity. It turns out that the extrema…
Efficiency of Penrose process in spacetime of axially symmetric magnetized Reissner-Nordström black hole
Sanjar Shaymatov, Pankaj Sheoran, Ricardo Becerril +2
In this paper, we investigate the Penrose process in the purlieus of the axially symmetric magnetized Reissner-Nordström black hole for both neutral and charged particles. We start…
Quasiperiodic Oscillations, Quasinormal Modes and Shadows of Bardeen-Kiselev Black Holes
Javlon Rayimbaev, Bushra Majeed, Mubasher Jamil +2
In this article, we study the particle dynamics around a static and spherically symmetric Bardeen-Kiselev black hole (BK BH) which is a solution of the Einstein-non-linear Maxwell…
Observational appearance of Kaluza-Klein black holes
Temurbek Mirzaev, Askar B. Abdikamalov, Ahmadjon A. Abdujabbarov +3
The optical properties of rotating black holes in Kaluza-Klein theory described by the total mass, spin, and electric and magnetic charges are investigated in detail. Using a devel…