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Galactic black hole immersed in a dark halo with its surrounding thin accretion disk

Aug 26, 2024

10 pages

Published in:

Gen.Rel.Grav. 57 (2025) 2, 49

Published: Feb 20, 2025

e-Print:

2408.16020 [gr-qc]

DOI:

10.1007/s10714-025-03382-5

View in:

ADS Abstract Service

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Abstract: (Springer)

By considering the analytic, static and spherically symmetric solution for the Schwarzschild black holes immersed in dark matter fluid with non-zero tangential pressure (Jusufi in Eur Phys J C 83:103, 2023) and Hernquist-type density profiles (Cardoso in Phys Rev D 105:L061501, 2022), we compute the luminosity of accretion disk. We study the circular motion of test particles in accretion disk and calculate the radius of the innermost stable circular orbits. Using the steady-state Novikov-Thorne model we also compute the observational characteristics of such black hole’s accretion disk and compare our results with the usual Schwarzschild black hole in the absence of dark matter fluid. We find that the tangential pressure plays a significant role in decreasing the size of the innermost stable circular orbits and thus increases the luminosity of black hole’s accretion disk.

Note:

10 pages(two columns), 6 figures

Accretion and accretion disks
Black holes
Physics of black holes
Dark matter

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Figures(11)

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