Zobrazeno 1 - 10
of 39
pro vyhledávání: '"Dokuchaev, Vyacheslav I."'
These are lectures for students at the summer school conducted by the Faculty of Fundamental Sciences, Bauman Moscow State Technical University at 2022.
Comment: 20 pages
Comment: 20 pages
Externí odkaz:
http://arxiv.org/abs/2208.04906
Autor:
Dokuchaev, Vyacheslav I.
Publikováno v:
Astronomy 2022, 1(2), 93-98
We elucidate the physical origin of the dark spot in the image of supermassive black hole SgrA* presented very recently by the EHT collaboration. It is argued that this dark spot, which is noticeably smaller than the classical black hole shadow, is t
Externí odkaz:
http://arxiv.org/abs/2206.05019
Publikováno v:
Physics 2021, 3(4), 814-820
In this paper, conformal invariant gravitation, based on Weyl geometry, is considered. In addition to the gravitational and matter action integrals, the interaction between the Weyl vector (entered in Weyl geometry) and the vector, representing the w
Externí odkaz:
http://arxiv.org/abs/2109.13544
Publikováno v:
JCAP11(2021)053
We investigated the possibility of construction the homogeneous and isotropic cosmological solutions in Weyl geometry. We derived the self-consistency condition which ensures the conformal invariance of the complete set of equations of motion. There
Externí odkaz:
http://arxiv.org/abs/2107.06160
Publikováno v:
Gen Relativ Gravit 53, 83 (2021)
We study the general relativistic motion of a bright spot in a jet from an accreting black hole. The corresponding lensed images of the moving bright spot are calculated numerically in discrete time intervals along the bright spot trajectory in the K
Externí odkaz:
http://arxiv.org/abs/2010.01885
In the present paper we investigate the conservative conditions in Quadratic Gravity. It is shown explicitly that the Bianchi identities lead to the conservative condition of the left-hand-side of the (gravitational) field equation. Therefore, the to
Externí odkaz:
http://arxiv.org/abs/2009.06176
Publikováno v:
Physics-Uspekhi 63 (6) 583 (2020)
In general relativity, isolated black holes are invisible due to an infinitely large redshift of photons propagating from the event horizon to the remote observer. However, the dark shadow (silhouette) of a black hole can be visible on the background
Externí odkaz:
http://arxiv.org/abs/1911.07695
Publikováno v:
Universe 2019, 5(8), 183
We propose the simple new method for extracting the value of the black hole spin from the direct high-resolution image of black hole by using a thin accretion disk model. In this model the observed dark region on the first image of the supermassive b
Externí odkaz:
http://arxiv.org/abs/1906.07171
Publikováno v:
Gen Relativ Gravit (2019) 51: 81
We demonstrate that a dark silhouette of the black hole illuminated by a thin accretion disk and seen by a distant observer is, in fact, a silhouette of the event horizon hemisphere. The boundary of this silhouette is a contour of the event horizon e
Externí odkaz:
http://arxiv.org/abs/1903.09594
Autor:
Belotsky, Konstantin M., Dokuchaev, Vyacheslav I., Eroshenko, Yury N., Esipova, Ekaterina A., Khlopov, Maxim Yu., Khromykh, Leonid A., Kirillov, Alexander A., Nikulin, Valeriy V., Rubin, Sergey G., Svadkovsky, Igor V.
Publikováno v:
Eur. Phys. J. C 79 (2019) 246
The Primordial Black Holes (PBHs) are gradually involved into consideration as the phenomenon having reliable basis. We discuss here the possibility of their agglomeration into clusters that may have several prominent observable features. The cluster
Externí odkaz:
http://arxiv.org/abs/1807.06590