38 citations · 57 across the 13 of their papers we have counts for
13 papers
Spherically Symmetric Fluid Simulations of Black Hole Accretion in Self-Interacting Dark Matter Halos
Zhe Meng, Tan Chen, Bocheng Zhu +4
We investigate black hole accretion in self-interacting dark matter (SIDM) halos using a self-gravitating fluid model with thermal conduction. We develop a robust one-dimensional s…
Self-stimulated avalanche in superradiant axion clouds
Zhen-Hong Lyu, Rong-Gen Cai, Jing Liu
Boson clouds formed via superradiance around spinning black holes offer a novel probe of ultralight particles. We show that such gravitational atoms can undergo a self-stimulated a…
The curvature perturbations and induced gravitational waves induced by the first-order phase transition during reheating
Xiao-Bin Sui, Jing Liu, Rong-Gen Cai
We propose a novel mechanism where a first-order phase transition modulates the decay rate of a massive field. This modulation, even if the scalar field has negligible energy densi…
Periodic Gravitational Lensing with Oscillating Boson Stars
Xing-Yu Yang, Tan Chen, Rong-Gen Cai
We show that oscillating (real-scalar) boson stars generically host an \emph{oscillating radial caustic}. Sources near this caustic cross it every half period, thereby producing pe…
Probing Warm Inflation via Correlated Gravitational Waves from First Order Phase Transitions
Xiao-Bin Sui, Jing Liu, Rong-Gen Cai
We investigate the properties of gravitational waves generated by heating induced phase transitions in warm inflation. In this scenario, the heating phase of inflation followed by…
Ring formation from black hole superradiance through repeated particle production on bound orbits
Zhen-Hong Lyu, Rong-Gen Cai, Zong-Kuan Guo +2
Ultralight bosonic fields around a rotating black hole can extract energy and angular momentum through the superradiant instability and form a dense cloud. We investigate the scena…
Gravitational wave cosmology
Ligong Bian, Rong-Gen Cai, Yu-Qi Dong +18
Gravitational waves (GWs) originating from cosmological sources offer direct insights into the physics of the primordial Universe, the fundamental nature of gravity, and the cosmic…
Generic effective sources for first-order in mass-ratio gravitational self-force calculations in Schwarzschild spacetime
Chao Zhang, Rong-gen Cai, Guoyang Fu +3
The numerical calculation of gravitational self-force in extreme mass ratio inspiral systems is fundamentally challenging due to the singular nature of point-particle sources. To o…
Enhancement of small-scale induced gravitational waves from the soliton/oscillon domination
Xiao-Bin Sui, Jing Liu, Rong-Gen Cai
We investigate density fluctuations and scalar-induced gravitational waves (GWs) arising from the production of long-lived solitons and oscillons, which can dominate the early Univ…
Modulations of Gravitational Waves due to Non-static Gravitational Lenses
Xing-Yu Yang, Tan Chen, Rong-Gen Cai
Gravitational waves (GWs) offer a new observational window into the universe, providing insights into compact objects and cosmic structures. Gravitational lensing, commonly studied…
Detecting the dark sector through scalar-induced gravitational waves
Xiao-Bin Sui, Jing Liu, Xing-Yu Yang +1
We investigate the evolution of cosmological scalar perturbations in the case that the background radiation is weakly coupled to a light scalar field . The light scalar is a…
Quasinormal modes of gravitational perturbation for uniformly accelerated black holes
Tan Chen, Rong-Gen Cai, Bin Hu
We first show that the master equations for massless perturbations of accelerating rotating black holes can be transformed into the Heun's equation. The quasinormal modes of the bl…
Testing primordial black hole and measuring the Hubble constant with multiband gravitational-wave observations
Lang Liu, Xing-Yu Yang, Zong-Kuan Guo +1
There exist two kinds of stochastic gravitational-wave backgrounds associated with the primordial curvature perturbations. One is called induced gravitational wave due to the nonli…