Accretion disk luminosity for black holes surrounded by dark matter with anisotropic pressure

Autor:	Boshkayev, Kuantay, Giambò, Roberto, Konysbayev, Talgar, Kurmanov, Ergali, Luongo, Orlando, Malafarina, Daniele, Quevedo, Hernando
Rok vydání:	2021
Předmět:	Astrophysics - High Energy Astrophysical Phenomena Astrophysics - Cosmology and Nongalactic Astrophysics Astrophysics - Astrophysics of Galaxies General Relativity and Quantum Cosmology
Druh dokumentu:	Working Paper
Popis:	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 momentum, energy and radius of the innermost circular stable orbit as functions of the dark matter density, radial pressure and anisotropic parameter, which establishes the relationship between the radial and tangential pressures. We show that the presence of dark matter with anisotropic pressure makes a noticeable difference in the geometry around a Schwarzschild black hole, affecting the radiative flux, differential luminosity and spectral luminosity of the accretion disk. Comment: 9 pages, 5 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2110.15402 Zobrazit plný text záznamu View this record from Arxiv