ACCRETION DISK LUMINOSITY FOR BLACK HOLES SURROUNDED BY DARK MATTER WITH ANISOTROPIC PRESSURE
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Date
2022
Authors
Kurmanov, E.
Boshkayev, K.
Giambò, R.
Konysbayev, T.
Luongo, O.
Malafarina, D.
Quevedo, H.
Journal Title
Journal ISSN
Volume Title
Publisher
The Astrophysical Journal
Abstract
We investigate the luminosity of the accretion disk of 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.
Description
Keywords
Type of acess: Open Access, Accretion Disk, dark matter
Citation
Boshkayev, K., Idrissov, A., Luongo, O., & Malafarina, D. (2020). Accretion disc luminosity for black holes surrounded by dark matter. Monthly Notices of the Royal Astronomical Society, 496(2), 1115–1123. https://doi.org/10.1093/mnras/staa1564