4 papers
Deviations from Kerr: Polar critical curves and photon rings in a class of separable spacetimes
Hao-Peng Yan, Xiang-Qian Li, Xiao-Jun Yue
Black-hole critical curves and photon rings provide complementary probes of strong-field geometry, motivating a unified analytic description of these observables beyond Kerr and a…
Near-extremal asymptotics and strong cosmic censorship for black holes immersed in a Chaplygin-like dark fluid
Hao-Peng Yan, Zeng-Yi Zhang, Xiang-Qian Li +1
We investigate strong cosmic censorship (SCC) for massless scalar perturbations of electrically neutral black holes immersed in a Chaplygin-like dark fluid (CDF). The matter distri…
Gravitational-wave imprints of Kerr--Bertotti--Robinson black holes: frequency blue-shift and waveform dephasing
Xiang-Qian Li, Hao-Peng Yan, Xiao-Jun Yue
We investigate the orbital dynamics and gravitational wave signatures of neutral Extreme Mass Ratio Inspirals (EMRIs) in the spacetime of a Kerr black hole immersed in an asymptoti…
Charged Lovelock black holes in the presence of dark fluid with a nonlinear equation of state
Xiang-Qian Li, Bo Chen, Li-li Xing
We consider a model that charged static spherically-symmetric black hole is surrounded by dark fluid with nonlinear equation of state . We find that the energy density…