18 citations · 54 across the 9 of their papers we have counts for
10 papers
Perturbations, eikonal limit and Hawking radiation of diverse external fields in a non-minimal charged black hole
Yinan Jia, Zhen-Hao Yang, Xiao-Mei Kuang
We compare the quasinormal modes (QNMs), greybody factors, and Hawking emission of massless scalar, electromagnetic, and Dirac test fields propagating on a non-minimal Einstein--Ya…
On the mapping between bound states and black hole quasinormal modes via analytic continuation: a spectral instability perspective
Guan-Ru Li, Wei-Liang Qian, Xiao-Mei Kuang +5
In this work, we investigate the relation between bound states and quasinormal modes within black hole perturbation theory in the context of spectral instability. Our analysis indi…
Soft cutoffs in the covariant phase space of dynamical reference frames
Kang Liu, Wei Guo, Xiao-Mei Kuang
We construct covariant theories incorporating fluctuating boundaries and soft cutoffs by introducing dynamical reference frames (DRFs). This framework generalizes the covariant act…
QNM families: classification and competition
Zhen-Hao Yang, Liang-Bi Wu, Xiao-Mei Kuang +1
The perturbation spectra of black holes beyond standard vacuum black hole solutions within generalrelativity (GR) may exhibit complex structures with long-lived modes. This usually…
On Hyperboloidal Foliations in the Study of Black Hole Quasinormal Modes
Shui-Fa Shen, Guan-Ru Li, Xiao-Mei Kuang +5
In this work, we demonstrate that the hyperboloidal foliation technique, applied to the study of black hole quasinormal modes, where the spatial boundary is shifted from spacelike…
Exploring black holes with multiple photon spheres by interferometric signatures
Xi-Jing Wang, Yuan Meng, Xiao-Mei Kuang +1
In this paper, we investigate the interferometric signatures of hairy Schwarzschild black holes (hSBHs) that have either single or double photon spheres. Our interest mainly stems…
Distinguishing black holes with and without spontaneous scalarization in Einstein-scalar-Gauss-Bonnet theories via optical features
Xi-Jing Wang, Yuan Meng, Xiao-Mei Kuang +1
Spontaneous scalarization in Einstein-scalar-Gauss-Bonnet theory admits both vacuum-general relativity (GR) and scalarized hairy black holes as valid solutions, which provides a di…
Gravitational odd-parity perturbation of a Horndeski hairy black hole: quasinormal mode and parameter constraint
Zhen-Hao Yang, Yun-He Lei, Xiao-Mei Kuang +1
During the binary black hole coalescence, gravitational waves emitted at the ringdown stage can be well described by black hole perturbation theory, where the quasinormal modes (QN…
Using the shadow of a black hole to examine the energy exchange between axion matter and a rotating black hole
Xiao-Mei Kuang, Yuan Meng, Eleftherios Papantonopoulos +1
We find that a \textit{slowly} rotating axion-modified black hole resulting from the backreaction of an axion field on a rotating Kerr black hole can have a \textit{D-shaped} shado…
Scalar field perturbation around a rotating hairy black hole: quasinormal modes, quasibound states and superradiant instability
Yun-He Lei, Zhen-Hao Yang, Xiao-Mei Kuang
We consider the quasinormal modes, quasibound states and superradiant instability of a rotating hairy black hole, which possesses a Horndeski hair as deviation from Kerr black hole…