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@article{57524,
author = {Stuchlík, Zdeněk and Vrba, Jaroslav},
article_location = {GB - Spojené království Velké Británie a},
article_number = {11},
doi = {http://dx.doi.org/10.1088/1475-7516/2021/11/059},
keywords = {dark matter simulations;astrophysical black holes},
language = {eng},
issn = {1475-7516},
journal = {Journal of Cosmology and Astroparticle Physics},
title = {Supermassive black holes surrounded by dark matter modeled as anisotropic fluid: epicyclic oscillations and their fitting to observed QPOs},
url = {https://iopscience.iop.org/article/10.1088/1475-7516/2021/11/059},
volume = {2021},
year = {2021}
}
TY - JOUR
ID - 57524
AU - Stuchlík, Zdeněk - Vrba, Jaroslav
PY - 2021
TI - Supermassive black holes surrounded by dark matter modeled as anisotropic fluid: epicyclic oscillations and their fitting to observed QPOs
JF - Journal of Cosmology and Astroparticle Physics
VL - 2021
IS - 11
SP - "059-1"-"059-19"
EP - "059-1"-"059-19"
SN - 14757516
KW - dark matter simulations;astrophysical black holes
UR - https://iopscience.iop.org/article/10.1088/1475-7516/2021/11/059
N2 - Recently introduced exact solution of the Einstein gravity coupled minimally to an anisotropic fluid representing dark matter can well represent supermassive black holes in galactic nuclei with realistic distribution of dark matter around the black hole, given by the Hernquist-like density distribution. For these fluid-hairy black hole spacetimes, properties of the gravitational radiation, quasinormal ringing, and optical phenomena were studied, giving interesting results. Here, using the range of physical parameters of these spacetimes allowing for their relevance in astrophysics, we study the epicyclic oscillatory motion of test particles in these spacetimes. The frequencies of the orbital and epicyclic motion are applied in the epicyclic resonance variant of the geodesic model of quasiperiodic oscillations (QPOs) observed in active galactic nuclei to demonstrate the possibility to solve the cases where the standard vacuum black hole spacetimes are not allowing for explanation of the observed data. We demonstrate that the geodesic model can explain the QPOs observed in most of the active galactic nuclei for the fluid-hairy black holes with reasonable halo parameters.
ER -
STUCHLÍK, Zdeněk a Jaroslav VRBA. Supermassive black holes surrounded by dark matter modeled as anisotropic fluid: epicyclic oscillations and their fitting to observed QPOs. \textit{Journal of Cosmology and Astroparticle Physics}. GB - Spojené království Velké Británie a, 2021, roč.~2021, č.~11, s.~''059-1''-''059-19'', 19 s. ISSN~1475-7516. Dostupné z: https://dx.doi.org/10.1088/1475-7516/2021/11/059.
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