13 citations · 19 across the 19 of their papers we have counts for
21 papers
Quasiperiodic oscillations as probes of rotating black holes in exponential dark matter environments
Madina Alimkulova, Kuantay Boshkayev, Sholpan Gumarova +2
We construct the rotating counterpart of a black hole embedded in a dark-matter halo with the exponential-sphere profile , using the Newman--Janis algorithm in the…
Testing dark matter density profiles based on Padé approximants of different orders
Talgar Konysbayev, Orlando Luongo, Marco Muccino +5
We investigate whether low-order Padé rational functions can be used as empirical density profiles for modeling dark matter halos from galaxy RCs. We introduce three parameterizati…
Shadow, Emission, and Strong-Field Lensing of Dilatonic Black Holes
Kuantay Boshkayev, Ainur Urazalina, Aidana Kurmanbek +2
We study the shadow and strong-field optical properties of a static, spherically symmetric dyon-like dilatonic black hole. The photon sphere radius, critical impact parameter, and…
Shirokov and Shapiro Effects in the Hartle-Thorne Spacetime
Anuar Idrissov, Kuantay Boshkayev, Serzhan Momynov +4
We investigate the influence of rotation and quadrupole deformations of astrophysical compact objects on the Shirokov and Shapiro effects within the Hartle-Thorne spacetime, which…
Accretion Disk Luminosity and Topological Characteristics for a Schwarzschild Black Hole Surrounded by King Dark Matter Halo
Soroush Zare, Farokhnaz Hosseinifar, Luis Miguel Nieto +4
This study delves into the intricate properties of a Schwarzschild black hole enveloped by King dark matter in an isotropic configuration. The thermodynamic characteristics of this…
Constraints on Kalb-Ramond Gravity from EHT Observations of Rotating Black Holes in Traceless Conformal Electrodynamics
Yassine Sekhmani, Kuantay Boshkayev, Mustapha Azreg-Aïnou +3
We present a phenomenological study of rotating, charged black holes in Einstein gravity coupled to a traceless (conformal) matter sector formed by ModMax nonlinear electrodynamics…
Constraining quadrupole deformations with relativistic effects
Daniya Utepova, Kuantay Boshkayev, Serzhan Momynov +4
We investigate two general relativistic effects - namely, the Shirokov and Shapiro effects - within the framework of the Zipoy-Voorhees spacetime (-metric), which generalizes th…
Geometric properties versus particle motion in the Fan-Wang spacetime
Gulnara Suliyeva, Kuantay Boshkayev, Talgar Konysbayev +7
In this work, we explore general relativistic effects and geometric properties of the Fan-Wang spacetime, one of the simplest regular solutions that can be obtained in nonlinear el…
Accretion disk luminosity around rotating naked singularities
Yergali Kurmanov, Kuantay Boshkayev, Talgar Konysbayev +6
We explore circular geodesics of neutral test particles in the gravitational field of a rotating deformed mass. The geometry around this source is described by the Quevedo-Mashhoon…
Geodesic deviation in the -metric
Anuar Idrissov, Kuantay Boshkayev, Konstantinos F. Dialektopoulos +2
We consider the tidal forces between test particles falling along geodesics in the exterior spacetime generated by a static and axially symmetric compact matter source with non-van…
Gravitational capture cross-section in Zipoy-Voorhees spacetimes
Serzhan Momynov, Kuantay Boshkayev, Hernando Quevedo +5
We consider geodesics of massive and massless test particles in the gravitational field of a static and axisymmetric compact object described by the quadrupolar metric (-metric)…
Stability Analysis of Circular Geodesics in Dyonic Dilatonic Black Hole Spacetimes
Kuantay Boshkayev, Gulnaz Takey, Vladimir Ivashchuk +3
This research investigates a non-extreme dyonic-like dilatonic charged black hole solution within a four-dimensional gravity model. This model incorporates two scalar (dilaton) fie…
Accretion disks properties around regular black hole solutions obtained from non-linear electrodynamics
Yergali Kurmanov, Kuantay Boshkayev, Talgar Konysbayev +5
We investigate a family of spherically symmetric, static, charged regular black hole solutions derived within the framework of Einstein-nonlinear electrodynamics. Our study focuses…
Luminosity of accretion disks around rotating regular black holes
Kuantay Boshkayev, Talgar Konysbayev, Yergali Kurmanov +4
We consider thin accretion disks in the field of a class of rotating regular black holes. For this purpose, we obtain the radius of the innermost stable circular orbit, …
Accretion disk in the Hartle-Thorne spacetime
Yergali Kurmanov, Marco Muccino, Kuantay Boshkayev +4
We consider the circular motion of test particles in the gravitational field of a rotating deformed object described by the Hartle-Thorne metric. This metric represents an approxim…
Circular geodesics in the field of double-charged dilatonic black holes
Kuantay Boshkayev, Gulnara Suliyeva, Vladimir Ivashchuk +1
A non-extreme dilatonic charged (by two ``color electric'' charges) black hole solution is examined within a four-dimensional gravity model that incorporates two scalar (dilaton) f…
Adiabatic theory in Kerr spacetimes
Kuantay Boshkayev, Gulmira Nurbakyt, Hernando Quevedo +7
We present the main aspects of the adiabatic theory and show that it can be used to study the motion of test particles in general relativity. The theory is based upon the use of ve…
Adiabatic theory of motion of bodies in the Hartle-Thorne spacetime
Gulnara Sulieva, Kuantay Boshkayev, Gulmira Nurbakyt +5
We study the motion of test particles in the gravitational field of a rotating and deformed object within the framework of the adiabatic theory. For this purpose, the Hartle-Thorne…
The Erez-Rosen solution versus the Hartle-Thorne solution
K. Boshkayev, H. Quevedo, G. Nurbakyt +2
In this work, we investigate the correspondence between the Erez-Rosen and Hartle-Thorne solutions. We explicitly show how to establish the relationship and find the coordinate tra…
Static general relativistic solutions supported by phantom and ordinary scalar fields with higher-order potentials
Vladimir Dzhunushaliev, Vladimir Folomeev, Arislan Makhmudov +1
Domain wall, wormhole, particlelike, and cosmic string general relativistic solutions supported by two interacting phantom or ordinary scalar fields with 4th-, 6th-, and 8th-order…
Compact and extended objects from self-interacting phantom fields
Vladimir Dzhunushaliev, Vladimir Folomeev, Arislan Makhmudov +3
In this work we investigate localized and extended objects for gravitating, self-interacting phantom fields. The phantom fields come from two scalar fields with a "wrong sign" (neg…