109 citations · 907 across the 49 of their papers we have counts for
49 papers
Smoking-gun evidence for hierarchical black-hole mergers
Yin-Jie Li, Yuan-Zhu Wang, Shao-Peng Tang +1
How stellar-mass black holes grow after their birth is a central open question in astrophysics. Gravitational-wave observations have revealed a subpopulation of coalescing black ho…
Tests of general relativity at the fourth post-Newtonian order with GW230627 and GW250114
Xi-Min Liang, Yuan-Zhu Wang, Tao Zhu +2
Gravitational wave (GW) observations provide an unprecedented laboratory for testing general relativity (GR) in the strong-field, highly dynamic, and relativistic regimes. Within t…
Secondary-Mass Features improve Spectral-Siren Constraints
Yin-Jie Li, Yi-Ying Wang, Yuan-Zhu Wang +2
Gravitational-wave (GW) signals from compact binary coalescences (CBCs) enable independent measurements of the Hubble constant \(H_0\) via the spectral siren method, which critical…
How do the LIGO-Virgo-KAGRA's Heavy Black Holes Form? No evidence for core-collapse Intermediate-mass black holes in GWTC-4
Fan-Xiao-Yu Xia, Yuan-Zhu Wang, Ying Qin
We investigate the population properties of binary black holes (BBHs) from the LIGO-Virgo-KAGRA collaboration, focusing especially on those in the high-mass range, using the newly…
Neutron Star Merger Rates from Multi-messenger Observations: Clues to the Physical Origin of the Short and Long-short Gamma-ray Bursts
Zhi-Ping Jin, Yuan-Zhu Wang, Yin-Jie Li +4
Short and long-short gamma-ray bursts (GRBs) are widely believed to be powered by neutron star mergers. In this work, we calculate local rate of such GRBs and find a relatively hig…
A new group of low-spin Black Holes and the high pair-instability mass cutoff
Yuan-Zhu Wang, Yin-Jie Li, Shi-Jie Gao +2
Pair-instability supernovae (PISN) will not leave compact remnants and hence yield a mass gap of the black holes. Though a transition point at , separating low-…
Aligned Hierarchical Black Hole Mergers in Active-Galactic-Nuclei Disks Revealed by GWTC-4
Yin-Jie Li, Yuan-Zhu Wang, Shao-Peng Tang +1
The active galactic nucleus (AGN) accretion disks are ideal sites for hierarchical black hole (BH) mergers. To robustly probe such a possibility, we analyze binary black hole merge…
Reassessing the Spin of Second-born Black Holes in Coalescing Binary Black Holes and Its Connection to the chi_eff-q Correlation
Zi-Yuan Wang, Ying Qin, Rui-Chong Hu +3
The mass ratio q and effective inspiral spin chi_eff of binary black hole (BBH) mergers in GWTC-4.0 show a weaker anti-correlation than in GWTC-3.0, motivating investigation of its…
Constraints on parity and Lorentz violations from gravitational waves: a comparison between single-parameter and multi-parameter analysis
Wei-Hua Guo, Yuan-Zhu Wang, Tao Zhu +1
The growing catalog of gravitational wave (GW) detections by the LIGO-Virgo-KAGRA Collaboration enables increasingly stringent tests of general relativity, particularly regarding p…
Revealing the - Correlation among Coalescing Binary Black Holes and Tentative Evidence for AGN-driven Hierarchical Mergers
Yin-Jie Li, Yuan-Zhu Wang, Shao-Peng Tang +2
The origin of the correlation between the effective spins () and mass ratios () of LIGO-Virgo-KAGRA's binary black holes (BBHs) is still an open question. Motivated…
Stable Case BB/BC Mass Transfer to Form GW190425-like Massive Binary Neutron Star Mergers
Ying Qin, Jin-Ping Zhu, Georges Meynet +14
On April 25th, 2019, the LIGO-Virgo Collaboration discovered a Gravitational-wave (GW) signal from a binary neutron star (BNS) merger, i.e., GW190425. Due to the inferred large tot…
The Heavier the Faster: A Sub-population of Heavy, Rapidly Spinning and Quickly Evolving Binary Black Holes
Wei-Hua Guo, Yin-Jie Li, Yuan-Zhu Wang +4
The spins of binary black holes (BBHs) measured from gravitational waves carry notable information of the formation pathways. Here we propose a quantity "dimensionless net spin" ($…
Multi-spectral Sirens: Gravitational-wave Cosmology with (Multi-) Sub-populations of Binary Black Holes
Yin-Jie Li, Shao-Peng Tang, Yuan-Zhu Wang +1
The cosmic expansion rate can be directly measured with gravitational-wave (GW) data of the compact binary mergers by jointly constraining the mass function of the population and t…
Exploring field-evolution and dynamical-capture coalescing binary black holes in GWTC-3
Yin-Jie Li, Shao-Peng Tang, Shi-Jie Gao +2
We investigate formation channels for merging binary black holes (BBHs) in GWTC-3, with a dedicated semiparametric population model. The model first describes or excludes a high-sp…
Dark Matter Spike surrounding Supermassive Black Holes Binary and the Nanohertz Stochastic Gravitational Wave Background
Zhao-Qiang Shen, Guan-Wen Yuan, Yi-Ying Wang +3
The NANOGrav, PPTA, EPTA, CPTA and MPTA collaborations have reported compelling evidence for the existence of the Stochastic Gravitational-Wave Background (SGWB). This inferred bac…
Black holes as the source of dark energy: a stringent test with high-redshift JWST AGNs
Lei Lei, Lei Zu, Guan-Wen Yuan +12
Studies have proposed that there is evidence for cosmological coupling of black holes (BHs) with an index of ; hence, BHs serve as the astrophysical source of dark ener…
Constraints on parity and Lorentz violations in gravity from GWTC-3 through a parametrization of modified gravitational wave propagations
Tao Zhu, Wen Zhao, Jian-Ming Yan +3
Gravitational wave (GW) observations provide sensitive tests of parity and Lorentz symmetries of gravity. Any violation of these fundamental symmetries induces possible deviations…
Rapidly growing primordial black holes as seeds of the massive high-redshift JWST Galaxies
Guan-Wen Yuan, Lei Lei, Yuan-Zhu Wang +6
A group of massive galaxies at redshifts of have been recently detected by the James Webb Space Telescope (JWST), which were unexpected to form so early within the fra…
Resolving the Stellar-Collapse and Hierarchical-Merger origins of the Coalescing Black Holes
Yin-Jie Li, Yuan-Zhu Wang, Shao-Peng Tang +1
Spin and mass properties provide essential clues in distinguishing the origins of coalescing black holes (BHs). With a dedicated semiparametric population model for the coalescing…
Searching for candidates of coalescing binary black holes formed through chemically homogeneous evolution in GWTC-3
Ying Qin, Yuan-Zhu Wang, Simone S. Bavera +10
The LIGO, Virgo, and KAGRA (LVK) collaboration has announced 90 coalescing binary black holes (BBHs) with to date, however, the origin of their formation cha…
Potential Subpopulations and Assembling Tendency of the Merging Black Holes
Yuan-Zhu Wang, Yin-Jie Li, Jorick S. Vink +4
The origins of coalescing binary black holes (BBHs) detected by the advanced LIGO/Virgo are still under debate, and clues may be present in the joint mass-spin distribution of thes…
Hypercritical Accretion for Black Hole High Spin in Cygnus X-1
Ying Qin, Xinwen Shu, Shuangxi Yi +1
Recent observations of AdLIGO and Virgo have shown that the spin measurements in binary black hole (BH) systems are typically small, which is consistent with the predictions by the…
Divergence in mass ratio distributions between low-mass and high-mass coalescing binary black holes
Yin-Jie Li, Yuan-Zhu Wang, Shao-Peng Tang +3
Coalescing binary black hole (BBH) systems are likely formed via several channels, and it is challenging to understand their formation / evolutionary processes. Some features in th…
Mass and effective spin distributions of binary black hole events: Evidence for a population of hierarchical black hole mergers in active galactic nuclei disks
Yuan-Zhu Wang, Yi-Zhong Fan, Shao-Peng Tang +2
The origins of the coalescing binary black holes (BBHs) detected by the advanced LIGO/Virgo are still in debate and clues may present in the mass and effective spin ()…