2022/05/09 by K. Boshkayev, Kuantay Boshkayev, T. Konysbayev +7 · 41 citations
Physics and Astronomy · #Accretion (finance) #Astrophysical Phenomena and Observations #Astrophysics #Black hole (networking) #Classical mechanics #Cosmology and Gravitation Theories #Dark matter #Galaxies: Formation, Evolution, Phenomena #Galaxy #General relativity #Intermediate-mass black hole #Physics #Schwarzschild metric #Schwarzschild radius #Spin-flip #Stellar black hole #Supermassive black hole #astro-ph.HE #gr-qc
paper · pdf · open access · doi:10.3847/1538-4357/ac8804
published in The Astrophysical Journal 936(2), 96 (IOP Publishing) · 8 pages, 5 figures and 2 tables
arxiv created 2022/05/09 · openalex publication_date 2022/09/01 · openalex created_date 2022/09/06 · arxiv updated 2022/09/14 · openalex updated_date 2026/08/05
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 vanishing tangential pressures allows to mimic the dark matter's angular momentum while still considering a static model, which simplifies the mathematical framework. We compare the numerical results about the influence of dark matter on the luminosity of accretion disks around static supermassive black holes with the previously studied cases of isotropic and anisotropic pressures. We show that the flux and luminosity of the accretion disk in the presence of dark matter are different from the case of a Schwarzschild black hole in vacuum and highlight the impact of the presence of tangential pressures.