Zobrazeno 1 - 10
of 27
pro vyhledávání: '"Konysbayev, Talgar"'
Autor:
Kurmanov, Yergali, Boshkayev, Kuantay, Konysbayev, Talgar, Luongo, Orlando, Saiyp, Nazym, Urazalina, Ainur, Ikhsan, Gulfeiruz, Suliyeva, Gulnara
We investigate a family of spherically symmetric, static, charged regular black hole solutions derived within the framework of Einstein-nonlinear electrodynamics. Our study focuses on examining the characteristics of accretion disks in the spacetimes
Externí odkaz:
http://arxiv.org/abs/2404.15437
Quasi-periodic oscillation (QPOs) analysis is important for understanding the dynamical behavior of many astrophysical objects during transient events such as gamma-ray bursts, solar flares, magnetar flares, and fast radio bursts. In this paper, we a
Externí odkaz:
http://arxiv.org/abs/2312.03630
Autor:
Boshkayev, Kuantay, Konysbayev, Talgar, Kurmanov, Yergali, Luongo, Orlando, Muccino, Marco, Taukenova, Aliya, Urazalina, Ainur
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, $r_{ISCO}$ and efficiency of accretion disk in converting matter into radiation $
Externí odkaz:
http://arxiv.org/abs/2307.15003
Autor:
Kurmanov, Yergali, Muccino, Marco, Boshkayev, Kuantay, Konysbayev, Talgar, Luongo, Orlando, Quevedo, Hernando, Urazalina, Ainur
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 approximate solution to the vacuum Einstein field equations, accurate to secon
Externí odkaz:
http://arxiv.org/abs/2306.15050
Autor:
Boshkayev, Kuantay, Konysbayev, Talgar, Kurmanov, Yergali, Luongo, Orlando, Muccino, Marco, Quevedo, Hernando, Zhumakhanova, Gulnur
We reproduce the rotation curve of the Andromeda galaxy (M31) by taking into account its bulge, disk, and halo components, considering the last one to contain the major part of dark matter mass. Hence, our prescription is to split the galactic bulge
Externí odkaz:
http://arxiv.org/abs/2212.02999
Autor:
Boshkayev, Kuantay, Konysbayev, Talgar, Kurmanov, Yergali, Luongo, Orlando, Malafarina, Daniele
We study the motion of test particles in the gravitational field of a Schwarzschild black hole surrounded by a spherical dark matter cloud with non-zero tangential pressure and compute the luminosity of the accretion disk. The presence of non vanishi
Externí odkaz:
http://arxiv.org/abs/2205.04208
Autor:
Boshkayev, Kuantay, Giambò, Roberto, Konysbayev, Talgar, Kurmanov, Ergali, Luongo, Orlando, Malafarina, Daniele, Quevedo, Hernando
We investigate the luminosity of the accretion disk for a static black hole surrounded by dark matter with anisotropic pressure. We calculate all basic orbital parameters of test particles in the accretion disk, such as angular velocity, angular mome
Externí odkaz:
http://arxiv.org/abs/2110.15402
Autor:
Boshkayev, Kuantay, Konysbayev, Talgar, Kurmanov, Ergali, Luongo, Orlando, Malafarina, Daniele, Mutalipova, Kalbinur, Zhumakhanova, Gulnur
We consider the possibility that the Milky Way's dark matter halo possesses a non vanishing equation of state. Consequently, we evaluate the contribution due to the speed of sound, assuming that the dark matter content of the galaxy behaves like a fl
Externí odkaz:
http://arxiv.org/abs/2107.00138
Autor:
Boshkayev, Kuantay, Konysbayev, Talgar, Kurmanov, Ergali, Luongo, Orlando, Malafarina, Daniele, Quevedo, Hernando
Publikováno v:
Phys. Rev. D 104, 084009 (2021)
We consider the circular motion of test particles in the gravitational field of a static and axially-symmetric compact object described by the $q$-metric. To this end, we calculate orbital parameters of test particles on accretion disks such as angul
Externí odkaz:
http://arxiv.org/abs/2106.04932
Publikováno v:
Phys. Rev. D 104, 023520 (2021)
We check the dynamical and observational features of four typologies of logotropic dark energy models, leading to a \emph{thermodynamic cosmic speed up} fueled by a single fluid that unifies dark energy and dark matter. We first present two principal
Externí odkaz:
http://arxiv.org/abs/2103.07252