Horizon-scale tests of gravity theories and fundamental physics from the Event Horizon Telescope image of Sagittarius A

S Vagnozzi, R Roy, YD Tsai, L Visinelli… - … and Quantum Gravity, 2023 - iopscience.iop.org
Horizon-scale images of black holes (BHs) and their shadows have opened an
unprecedented window onto tests of gravity and fundamental physics in the strong-field …

Rotating black hole shadow in perfect fluid dark matter

X Hou, Z Xu, J Wang - Journal of Cosmology and Astroparticle …, 2018 - iopscience.iop.org
We study analytically the shadow cast by the rotating black hole in the perfect fluid dark
matter. The apparent shape of the shadow depends upon the black hole spin a and the …

Thin accretion disc luminosity and its image around rotating black holes in perfect fluid dark matter

M Heydari-Fard, S Ghassemi Honarvar… - Monthly Notices of …, 2023 - academic.oup.com
Motivated by the fact that the universe is dominated by dark matter and dark energy, we
consider rotating black holes surrounded by perfect fluid dark matter and study the accretion …

Kerr–Newman-AdS black hole surrounded by perfect fluid matter in Rastall gravity

Z Xu, X Hou, X Gong, J Wang - The European Physical Journal C, 2018 - Springer
The Rastall gravity is the modified Einstein general relativity, in which the energy-momentum
conservation law is generalized to T^ μ ν _~~; μ= λ R^, ν T; μ μ ν= λ R, ν. In this work, we …

Investigation of circular geodesics in a rotating charged black hole in the presence of perfect fluid dark matter

A Das, A Saha, S Gangopadhyay - Classical and Quantum …, 2021 - iopscience.iop.org
In this work we have obtained a charged black hole solution in the presence of perfect fluid
dark matter (PFDM) and discuss its energy conditions. The metric corresponding to the …

Gravitational lensing of Schwarzschild and charged black holes immersed in perfect fluid dark matter halo

CK Qiao, M Zhou - Journal of Cosmology and Astroparticle …, 2023 - iopscience.iop.org
Dark matter and dark energy dominate the behavior of our universe. The dark matter usually
forms halo structures in large number of galaxies. Properties of dark matter halo can be …

Optical properties of Euler–Heisenberg black hole surrounded by perfect fluid dark matter

GDA Yildiz, A Ditta, A Ashraf, E Güdekli… - Physics of the Dark …, 2024 - Elsevier
This work explores the phenomenon of plasma lensing in weak plasma fields around Euler–
Heisenberg black holes submerged in perfect fluid dark matter. For both uniform and non …

Phase structure and critical behaviour of charged-AdS black holes with perfect fluid dark matter

A Kumar, A Sood, JK Singh, A Beesham… - Physics of the Dark …, 2023 - Elsevier
We get an exact nonlinear electrodynamics (NED) charged black holes endowed with the
perfect fluid dark matter (PFDM) in the AdS background-charged PFDM AdS black holes …

Dark matter effect on black hole accretion disks

D Pugliese, Z Stuchlík - Physical Review D, 2022 - APS
Comparing different dark matter (DM) models, we explore the DM influence on black hole
(BH) accretion disk physics, considering corotating and counterrotating thick accretion tori …

[HTML][HTML] Superradiance and stability of Kerr black hole enclosed by anisotropic fluid matter

M Khodadi, R Pourkhodabakhshi - Physics Letters B, 2021 - Elsevier
Focusing on the rotating black hole (BH) surrounded by the anisotropic fluid matters;
radiation, dust, and dark matter, we study the massive scalar superradiant scattering and the …