650 citations · 1.3k across the 23 of their papers we have counts for
23 papers
Shadow and near-horizon characteristics of the acoustic charged black hole in curved spacetime
Ru Ling, Hong Guo, Hang Liu +2
In this paper, we first analyze the horizon structure of the acoustic charged black hole in curved spacetime, and then study its acoustic shadow as well as the near-horizon charact…
On an alternative mechanism for the black hole echoes
Hang Liu, Wei-Liang Qian, Yunqi Liu +3
Gravitational wave echoes from the black holes have been suggested as a crucial observable to probe the spacetime in the vicinity of the horizon. In particular, it was speculated t…
Sky localization of space-based gravitational wave detectors
Chao Zhang, Yungui Gong, Hang Liu +2
Localizing the sky position of the gravitational wave source is a key scientific goal for gravitational wave observations. Employing the Fisher information matrix approximation, we…
Echoes from phantom wormholes
Hang Liu, Peng Liu, Yunqi Liu +2
We study the time evolution of the test scalar and electromagnetic fields perturbations in configurations of phantom wormholes surrounded by dark energy with state parameter $ω< -1…
Acoustic black hole in Schwarzschild spacetime: quasi-normal modes, analogous Hawking radiation and shadows
Hong Guo, Hang Liu, Xiao-Mei Kuang +1
Various properties of acoustic black holes constructed in Minkowski spacetime have been widely studied in the past decades. Recently the acoustic black holes in general spacetime w…
Exploring non-singular black holes in gravitational perturbations
Hang Liu, Chao Zhang, Yungui Gong +2
We calculate gravitational perturbation quasinormal modes (QNMs) of non-singular Bardeen black holes (BHs) and singularity-free BHs in conformal gravity and examine their spectra i…