540 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- University of Chinese Academy of SciencesCN551 papers
- Peking UniversityCN444 papers
- University of Science and Technology of ChinaCN430 papers
- Hunan UniversityCN427 papers
- Tsinghua UniversityCN420 papers
- Shanghai Jiao Tong UniversityCN409 papers
- China Center of Advanced Science and TechnologyCN404 papers
- Zhengzhou UniversityCN404 papers
- Lanzhou UniversityCN403 papers
- University of South ChinaCN401 papers
- Nanjing Normal UniversityCN400 papers
- Beihang UniversityCN399 papers
75 papers · 1 filter
Cosmological Constraints on the Phenomenological Interacting Dark Energy Model with Fermi Gamma-Ray Bursts and DESI DR2
Ziyan Zhu, Qingquan Jiang, Yu Liu +2
In this work, we constrain the phenomenological interacting dark energy (IDE) model using \emph{Fermi} gamma-ray burst (GRB) dataset and the latest baryon acoustic oscillation (BAO…
Testing the Distance Duality Relation with Cosmological Observations at high Redshift using Artificial Neural Network
Yukang Xie, Yang Liu, Puxun Wu +2
The cosmic Distance Duality Relation (DDR) is a fundamental prediction of metric gravity under photon number conservation. In this work, we perform a model-independent test of the…
Revisiting cosmic acceleration with DESI BAO
Jincheng Wang, Hongwei Yu, Puxun Wu
We revisit the evolution of cosmic acceleration in a spatially flat CDM universe, in which the equation of state of dark energy takes the CPL parametrization, using the lat…
Gamma-Ray Bursts Calibrated by Using Artificial Neural Networks from the Pantheon+ Sample
Zhen Huang, Xin Luo, Bin Zhang +4
In this paper, we calibrate the luminosity relation of gamma-ray bursts (GRBs) by Artificial Neural Networks (ANN) which is employed to analyze the Pantheon+ sample of type Ia supe…
Torsion cosmology in the light of DESI, supernovae and CMB observational constraints
Tonghua Liu, Xiaolei Li, Tengpeng Xu +2
In this work, we investigate a torsion-based cosmological model within the Einstei-Cartan framework, constrained by the latest combined datasets including DESI DR2 BAO, PantheonPlu…
Probing Ultralight Axion-like Dark Matter: A Pulsar Timing Arrays-Pulsar Polarization Arrays Synergy
Ximeng Li, Yonghao Liu, Zu-Cheng Chen +9
Ultralight axionlike dark matter (ALDM) is a leading candidate in the dark matter realm, characterized by its prominent wave properties on astronomical scales. Pulsar timing arrays…
Constraining the Baryon Fraction in Extragalactic Diffuse Ionized Gas with 124 Localized Fast Radio Bursts
Yang Liu, Yuchen Zhang, Jun-Jie Wei +3
Fast radio bursts (FRBs) are increasingly recognized as powerful cosmological tools for constraining the baryon fraction in extragalactic diffuse ionized gas, presenting a promisin…
Primordial black holes and scalar induced gravitational waves from sound speed resonance in non-minimal derivative coupling inflation model
Li-Shuai Wang, Qiong-Tao Xie, Li-Yang Chen
We investigate an inflationary model with a non-minimal derivative coupling, where the coupling function contains both constant and periodic components. On large scales, the model…
On the Gauge Invariance of Secondary Gravitational Waves
Chen Yuan, Yizhou Lu, Zu-Cheng Chen +1
Second-order tensor perturbations induced by primordial fluctuations play a crucial role in probing small-scale physics, but gauge dependence of their energy density has remained a…
Search for a Gravitational-Wave Background from Sound Speed Resonance from Advanced LIGO and Advanced Virgo's First Three Observing Runs
You Wu, Zu-Cheng Chen, Lang Liu
We search for a stochastic gravitational-wave background (SGWB) originating from scalar-induced gravitational waves (SIGWs) with the sound speed resonance (SSR) effect using data f…
Alleviating the Hubble-constant tension and the growth tension via a transition of absolute magnitude favored by the Pantheon+ sample
Yang Liu, Hongwei Yu, Puxun Wu
We establish a cosmological-model-independent method to extract the apparent magnitude and its derivative at different redshifts from the Pantheon+ type Ia supernova sample, and fi…
Model independent calibration for sound horizon combining observations of supernovae and transversal BAO measurements
Tonghua Liu, Xinyi Zhong, Jieci Wang +1
The sound horizon is a key theoretical prediction of the cosmological model that depends on the speed of sound and the rate of expansion in the early universe, before matter and ra…
Model-independent way to determine the Hubble constant and the curvature from phase shift of gravitational waves with DECIGO
Tonghua Liu, Shuo Cao, Marek Biesiada +2
In this Letter, we propose a model-independent method to determine the Hubble constant and curvature simultaneously taking advantage of the possibilities of future space-borne grav…
Constraints on Cosmological Models from Quasars Calibrated with Type Ia Supernova by a Gaussian Process
Haixiang Zhang, Yang Liu, Hongwei Yu +3
In this paper, we use quasars calibrated from type Ia supernova (SN Ia) to constrain cosmological models. We consider three different X-ray luminosity () - ultraviolet lumin…
Deep learning for cosmological parameter inference from a dark matter halo density field
Zhiwei Min, Xu Xiao, Jiacheng Ding +11
We propose a lightweight deep convolutional neural network (lCNN) to estimate cosmological parameters from simulated three-dimensional dark matter (DM) halo distributions and assoc…
Confronting primordial black holes with LIGO-Virgo-KAGRA and the Einstein Telescope
Zu-Cheng Chen, Alex Hall
The detection of gravitational waves (GWs) from binary black hole (BBH) coalescences by the LIGO-Virgo-KAGRA (LVK) Collaboration has raised fundamental questions about the genesis…
Can we distinguish the adiabatic fluctuations and isocurvature fluctuations with pulsar timing arrays?
Zu-Cheng Chen, Lang Liu
Understanding the nature of primordial fluctuations is pivotal to unraveling the Universe's early evolution. While these fluctuations are observed to be nearly scale-invariant, qua…
The boundary of cosmic filaments
Wei Wang, Peng Wang, Hong Guo +12
For decades, the boundary of cosmic filaments have been a subject of debate. In this work, we determine the physically-motivated radii of filaments by constructing stacked galaxy n…
NANOGrav hints for first-order confinement-deconfinement phase transition in different QCD-matter scenarios
Zu-Cheng Chen, Shou-Long Li, Puxun Wu +1
Recent observations from several pulsar timing array (PTA) collaborations have unveiled compelling evidence for a stochastic signal in the nanohertz band. This signal aligns remark…
Multiple measurements on the cosmic curvature using Gaussian process regression without calibration and a cosmological model
Xiaolong Gong, Yifei Xu, Tonghua Liu +4
In this letter, we propose an improved cosmological model-independent method to measure cosmic curvature, combining the recent measurements of transverse and line-of-sight directio…
Model-independent Gamma-Ray Bursts Constraints on Cosmological Models Using Machine Learning
Bin Zhang, Huifeng Wang, Xiaodong Nong +3
In this paper, we calibrate the luminosity relation of gamma-ray bursts (GRBs) with the machine learning (ML) algorithms from the Pantheon+ sample of type Ia supernovae in a cosmol…
Constraints on the velocity of gravitational waves from NANOGrav 15-year data set
Yan-Chen Bi, Yu-Mei Wu, Zu-Cheng Chen +1
General relativity predicts that gravitational waves propagate at the speed of light. Although ground-based gravitational-wave detectors have successfully constrained the velocity…
Constraining the Graviton Mass with the NANOGrav 15-Year Data Set
Yu-Mei Wu, Zu-Cheng Chen, Yan-Chen Bi +1
The recently detected stochastic signal by several pulsar timing array collaborations, offers an opportunity to scrutinize the fundamental properties of gravity, including the pote…
Simultaneously probing the sound speed and equation of state of the early Universe with pulsar timing arrays
Lang Liu, You Wu, Zu-Cheng Chen
Recently, several major pulsar timing array (PTA) collaborations have assembled strong evidence for the existence of a gravitational-wave background at frequencies around the nanoh…