Accretion Disk Luminosity for Black Holes Surrounded by Dark Matter with Anisotropic Pressure
Kurmanov E. Boshkayev K. Giambò R. Konysbayev T. Luongo O. Malafarina D. Quevedo H.
1 February 2022IOP Publishing Ltd
Astrophysical Journal
2022#925Issue 2
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.
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National Nanotechnology Laboratory of Open Type, Almaty, 050040, Kazakhstan
Al-Farabi Kazakh National University, Al-Farabi Ave. 71, Almaty, 050040, Kazakhstan
Department of Physics, Nazarbayev University, Kabanbay Batyr 53, Nur-Sultan, 010000, Kazakhstan
Scuola di Scienze e Tecnologie, Università di Camerino, Via Madonna delle Carceri 9, Camerino, I-62032, Italy
Istituto Nazionale di Fisica Nucleare, Sezione di Perugia, Via Alessandro Pascoli 23c, Perugia, I-06123, Italy
Dipartimento di Matematica, Università di Pisa, Largo B. Pontecorvo 5, Pisa, I-56127, Italy
Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, Mexico, Mexico
Dipartimento di Fisica and ICRA, Università di Roma ;La Sapienza, Roma, Italy
National Nanotechnology Laboratory of Open Type
Al-Farabi Kazakh National University
Department of Physics
Scuola di Scienze e Tecnologie
Istituto Nazionale di Fisica Nucleare
Dipartimento di Matematica
Instituto de Ciencias Nucleares
Dipartimento di Fisica and ICRA
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