54 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Guizhou UniversityCN18 papers
- Chuzhou UniversityCN8 papers
- Central China Normal UniversityCN7 papers
- Qufu Normal UniversityCN6 papers
- Eastern Mediterranean UniversityCY5 papers
- Guizhou Normal UniversityCN5 papers
- Southwest UniversityCN5 papers
- Guizhou Minzu UniversityCN4 papers
- University of SalernoIT4 papers
- Chinese Academy of SciencesCN3 papers
- Istituto Nazionale di Fisica NucleareIT3 papers
- Peking UniversityCN3 papers
9 papers · 1 filter
Echoes of a hairy black hole from gravitational decoupling
Yi Yang, Ali Ovgun, Gaetano Lambiase +2
We study axial gravitational perturbations of a hairy black hole constructed within the framework of gravitational decoupling and investigate the geometric origin of echo-like late…
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…
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…
Quasinormal modes of Kerr-like black bounce spacetime
Yi Yang, Dong Liu, Ali Övgün +2
We investigate the quasinormal mode (QNM) spectrum of a Kerr-like black-bounce spacetime under massive scalar-field perturbations. Starting from the Kerr-like deformation of the Si…
A note on the definition of gravitational energy for quadratic curvature gravity via topological regularization
Meng-Liang Wang, Jun-Jin Peng
Within the framework of four-dimensional quadratic curvature gravities in the appearance of a negative cosmological constant, a definition for the gravitational energy of solutions…