7 papers
Probing soft signals of gravitational-wave memory with space-based interferometers
Yan Cao, Yong-Liang Ma, Yong Tang
Gravitational-wave displacement memory is a remarkable and ubiquitous phenomenon predicted by general relativity, which has not yet been detected. Unlike the oscillatory components…
Constraining Ultralight Scalar Dark Matter in the Galactic Center with the S2 Orbit
Jiang-Chuan Yu, Yan Cao, Lijing Shao
The dense environment of our Galactic Center (GC) offers a unique laboratory for probing ultralight dark matter (ULDM). We explore the prospect of detecting a scalar ULDM field thr…
Effects of dark dipole radiation on eccentric supermassive black hole binary inspirals
Mu-Chun Chen, Yan Cao
The final-parsec problem has long posed a central challenge in understanding the merger of supermassive black hole binaries. In this paper, we investigate a scenario in which a dar…
Detecting ultralight dark matter in the Galactic Center with pulsars around Sgr A*
Jiang-Chuan Yu, Yan Cao, Zexin Hu +1
Ultralight dark matter (ULDM) model is a leading dark matter candidate that arises naturally in extensions of the Standard Model. In the Galactic Center, ULDM manifests as dense hy…
Effects of black hole environments on extreme mass-ratio hyperbolic encounters
Ya-Ze Cheng, Yan Cao, Yong Tang
Extreme mass-ratio hyperbolic encounters (EMRHEs) around the supermassive black holes will be observable at the future gravitational-wave (GW) detectors in space, such as LISA and…
Probing vector gravitational atoms with eccentric intermediate mass-ratio inspirals
Yan Cao, Ya-Ze Cheng, Gen-Liang Li +1
Ultralight bosons, proposed as candidates for dark matter (DM), are predicted by various new physics models. In the presence of bosons with suitable masses, superradiant (SR) insta…