54 citations · 218 across the 16 of their papers we have counts for
13 papers · 1 filter
Ringdown of a black hole sourced by a Burkert-density effective anisotropic source
Yi Yang, Gaetano Lambiase, Ali Ovgun +2
We construct a static, spherically symmetric black hole spacetime sourced by an effective anisotropic matter distribution whose energy density follows the cored Burkert profile. Th…
Quasinormal Modes of Schwarzschild Black Holes in the Dehnen-(1, 4, 5/2) Type Dark Matter Halos
Qi-Qi Liang, Dong Liu, Zheng-Wen Long
The Dehnen - type dark matter density distribution model is mainly used for dwarf galaxies. In recent years, researchers have speculated that black holes may exist in this dark mat…
Quasinormal Modes and Greybody Factors of Scalar Field Perturbations in the NED Corrected Charged Black Hole Spacetime
Jie Liang, Dong Liu, Zheng-Wen Long
Inspired by the quark-antiquark confinement potential, Mazharimousavi et al. \cite{Mazharimousavi:2023okd} proposed a nonlinear electrodynamics (NED) model, and based on this model…
Testing black holes in a perfect fluid dark matter environment using quasinormal modes
Qun Tan, Dong Liu, Jie Liang +1
This research explores the quasinormal modes (QNMs) characteristics of charged black holes in a perfect fluid dark matter (PFDM) environment. Based on the Event Horizon Telescope (…
Probing black holes via quasinormal modes in a dark energy-induced dark matter
Jie Liang, Dong Liu, Hao-Jie Lin +1
This study delves into the existence of dark matter around supermassive black holes in galactic cores using a novel gravitational model. By analyzing gravitational waves emitted du…
Probing black holes in a dark matter spike of M87 using quasinormal modes
Dong Liu, Yi Yang, Zheng-Wen Long
Dark matter density can be significantly enhanced by the supermassive black hole at the galactic center, leading to a structure called dark matter spike. Dark matter spike may chan…
Probing the black holes in a dark matter halo of M87 using gravitational wave echoes
Dong Liu, Yi Yang, Zheng-Wen Long
Variations at the event horizon structure of a black hole will emit the signals of the gravitational wave echoes associated with the ringdown of the binary black hole merger. In th…
Black hole surrounded by the pseudo-isothermal dark matter halo
Yi Yang, Dong Liu, Ali Övgün +2
The abundance of dark matter in the actual universe motivates us to construct the black hole spacetime enveloped by dark matter. In this paper, we derive a new spherically symmetri…
Modeling the black holes surrounded by a dark matter halo in the galactic center of M87
Dong Liu, Yi Yang, Zhaoyi Xu +1
In this paper, the structure of a dark matter halo can be well described by the mass model of M87 and the Einasto profile for the cold dark matter model, i.e., $ρ_{\text{eina}} (r)…
Rotating black hole mimicker surrounded by the string cloud
Yi Yang, Dong Liu, Ali Övgün +2
Traversable wormholes and regular black holes usually represent completely different scenarios. But in the black bounce spacetime they can be described by a same line element, whic…
Ringing and echoes from black bounces surrounded by the string cloud
Yi Yang, Dong Liu, Zhaoyi Xu +1
In the string theory, the fundamental blocks of nature are not particles but one-dimensional strings. Therefore, a generalization of this idea is to think of it as a cloud of strin…
Gravitational ringing and superradiant instabilities of the Kerr-like black holes in a dark matter halo
Dong Liu, Yi Yang, Ali Övgün +2
Supermassive black holes from the center of galaxy may be immersed in a dark matter halo. This dark matter halo may form a "cusp" structure around the black hole and disappear at a…
Echoes of charged black-bounce spacetimes
S. R. Wu, B. Q. Wang, Dong Liu +1
In present work, the evolution of scalar field and electromagnetic field under the background of the charged black-bounce spacetimes are investigated, and we obtain an obvious echo…