2k citations · 6.6k across the 117 of their papers we have counts for
117 papers
On the improved dynamics approach in loop quantum black holes
Hongchao Zhang, Wen-Cong Gan, Yungui Gong +1
In this paper, we consider the Böhmer-Vandersloot (BV) model of loop quantum black holes obtained from the improved dynamics approach. We adopt the Saini-Singh gauge, in which it w…
Detecting new fundamental fields with Pulsar Timing Arrays
Chao Zhang, Ning Dai, Qing Gao +3
Strong evidence of the existence of the Stochastic Gravitational-Wave Background (SGWB) has been reported by the NANOGrav, PPTA, EPTA and CPTA collaborations. The Bayesian posterio…
Scalar induced gravitational waves in light of Pulsar Timing Array data
Zhu Yi, Qing Gao, Yungui Gong +2
The power-law parametrization for the energy density spectrum of gravitational wave (GW) background is a useful tool to study its physics and origin. While scalar induced secondary…
Detecting the secondary spin with extreme mass ratio inspirals in Scalar-Tensor theory
Hong Guo, Chao Zhang, Yunqi Liu +3
In this paper, we investigate the detectability of secondary spin in the extreme mass ratio inspirals system within a modified gravity model coupled with a scalar field. The centra…
Sky localization of space-based detectors with time-delay interferometry
Tong Jiang, Yungui Gong, Xuchen Lu
The accurate sky localization of gravitational wave (GW) sources is an important scientific goal for space-based GW detectors. The main differences between future space-based GW de…
Detecting vector charge with extreme mass ratio inspirals onto Kerr black holes
Chao Zhang, Hong Guo, Yungui Gong +1
Extreme mass ratio inspirals (EMRIs) are excellent sources for space-based observatories to explore the properties of black holes and test no-hair theorems. We consider EMRIs with…
Extreme mass ratio inspirals in galaxies with dark matter halos
Ning Dai, Yungui Gong, Yang Zhao +1
Using an analytic, static, and spherically symmetric metric for a Schwarzschild black hole immersed in a dark matter (DM) halo with the Hernquist-type profile, we derive analytic e…
Nonexistence of quantum black and white hole horizons in an improved dynamic approach
Wen-Cong Gan, Xiao-Mei Kuang, Zhen-Hao Yang +3
In this paper, we study the quantum geometric effects near the locations where classical black hole horizons used to appear in Einstein's classical theory, within the framework of…
Testing alternative theories of gravity with space-based gravitational wave detectors
Qing Gao, Yujie You, Yungui Gong +2
We use gravitational waves (GWs) from binary black holes (BBHs) and neutron stars inspiraling into intermediate-mass black holes to evaluate how accurately the future space-based G…
Gravitational waves from eccentric extreme mass-ratio inspirals as probes of scalar fields
Chao Zhang, Yungui Gong, Dicong Liang +1
We study eccentric orbits of the Schwarzschild spacetime for extreme mass ratio system (EMRI) in modified gravity theories with additional scalar fields. Due to the additional ener…
Supernova calibration by gravitational wave
Xuchen Lu, Yungui Gong
Hubble tension is one of the most important problems in cosmology. Although the local measurements on the Hubble constant with Type Ia supernovae (SNe Ia) are independent of cosmol…
Detecting electric charge with Extreme Mass Ratio Inspirals
Chao Zhang, Yungui Gong
We consider extreme mass ratio inspirals during which an electrically charged compact object with mass and the charge to mass ratio inspirals around a Schwarzschild black…
Detection of scalar fields by Extreme Mass Ratio Inspirals with a Kerr black hole
Hong Guo, Yunqi Liu, Chao Zhang +3
We study extreme mass ratio inspirals occurring in modified gravity, for which the system is modeled by a small compact object with scalar charge spiraling into a supermassive Kerr…
Source localizations with the network of space-based gravitational wave detectors
Chunyu Zhang, Yungui Gong, Chao Zhang
The sky localization of the gravitational wave (GW) source is an important scientific objective for GW observations. A network of space-based GW detectors dramatically improves the…
Intermediate Mass-Ratio Inspirals with Dark Matter Minispikes
Ning Dai, Yungui Gong, Tong Jiang +1
The dark matter (DM) distributed around an intermediate massive black hole (IMBH) forms an overdensity region called DM minispike. We consider the binary system which consists of a…
Primordial black holes and scalar induced gravitational waves from Higgs inflation with non-canonical kinetic term
Jiong Lin, Shengqing Gao, Yungui Gong +3
We resolve the potential-restriction problem in K/G inflation by introducing nonminimal coupling. In this context, Higgs field successfully drives inflation satisfying CMB observat…
On the linear transformation between inertial frames
Qing Gao, Yungui Gong
In the derivation of Lorentz transformation, linear transformation between inertial frames is one of the most important steps. In teaching special relativity, we usually use the ho…
Concepts and status of Chinese space gravitational wave detection projects
Yungui Gong, Jun Luo, Bin Wang
Gravitational wave (GW) detection in space probes GW spectrum that is inaccessible from the Earth. In addition to LISA project led by European Space Agency, and the DECIGO detector…
Constraint on Brans-Dicke theory from intermediate/extreme mass ratio inspirals
Tong Jiang, Ning Dai, Yungui Gong +2
Intermediate/Extreme mass ratio inspiral (I/EMRI) system provides a good tool to test the nature of gravity in strong field. Based on the method of osculating orbits, we compute th…
Parameter estimation for space-based gravitational wave detectors with ringdown signals
Chunyu Zhang, Yungui Gong, Chao Zhang
Unlike ground-based gravitational wave detectors, space-based gravitational wave detectors can detect the ringdown signals from massive black hole mergers with large signal-to-nois…
Primordial black holes and secondary gravitational waves from string inspired general no-scale supergravity
Lina Wu, Yungui Gong, Tianjun Li
The formation of primordial black hole (PBH) dark matter and the generation of scalar induced secondary gravitational waves (SIGWs) have been studied in the generic no-scale superg…
Detection of gravitational wave mixed polarization with single space-based detectors
Chao Zhang, Yungui Gong, Dicong Liang +1
General Relativity predicts only two tensor polarization modes for gravitational waves while at most six possible polarization modes are allowed in general metric theory of gravity…
Primordial Non-Gaussianity from G-inflation
Fengge Zhang, Yungui Gong, Jiong Lin +2
Enormous information about interactions is contained in the non-Gaussianities of the primordial curvature perturbations, which are essential to break the degeneracy of inflationary…
Primordial black holes and secondary gravitational waves from natural inflation
Qing Gao, Yungui Gong, Zhu Yi
The production of primordial black hole (PBH) dark matter (DM) and the generation of scalar induced secondary gravitational waves by using the enhancement mechanism with a peak fun…