115 citations · 945 across the 25 of their papers we have counts for
25 papers
Constraining on the non-standard cosmological models combining the observations of high-redshift quasars and BAO
Ziqiang Liu, Tonghua Liu, Xinyi Zhong +2
In this work, we studied four types of cosmological models with different mechanisms driving the accelerated expansion of the universe, include Braneworld models, Chaplygin Gas mod…
Distinguishing CDM from evolving dark energy with the future gravitational-wave space-borne detector DECIGO
Yuting Liu, Shuo Cao, Xiaogang Zheng +3
The two point diagnostics was proposed as a litmus test of CDM model and measurements of cosmic expansion rate have been extensively used to perform this…
Redshift evolution of the Amati relation: calibrated results from the Hubble diagram of quasars at high redshifts
Yan Dai, Xiao-Gang Zheng, Zheng-Xiang Li +2
Gamma-ray bursts (GRBs) have long been proposed as a complementary probe to type Ia supernovae (SNe Ia) and cosmic microwave background to explore the expansion history of the high…
Hubble diagram at higher redshifts: Model independent calibration of quasars
Xiaolei Li, Ryan E. Keeley, Arman Shafieloo +4
In this paper, we present a model-independent approach to calibrate the largest quasar sample. Calibrating quasar samples is essentially constraining the parameters of the linear r…
Multiple measurements of quasars acting as standard probes: model independent calibration and exploring the Dark Energy Equation of States
Xiaogang Zheng, Shuo Cao, Marek Biesiada +3
Recently, two classes of quasar samples were identified, which are promising as new cosmological probes extending to higher redshifts. The first sample uses the nonlinear relation…
Model-independent constraints on cosmic curvature: implication from the future gravitational wave observation DECIGO
Xiaogang Zheng, Shuo Cao, Yuting Liu +5
A model-independent test of the cosmic curvature parameter is very important in cosmology. In order to estimate cosmic curvature from cosmological probes like standard candle…
Multiple measurements of quasars acing as standard probes: exploring the cosmic distance duality relation at higher redshift
Xiaogang Zheng, Kai Liao, Marek Biesiada +3
General relativity reproduces main current cosmological observations, assuming the validity of cosmic distance duality relation (CDDR) at all scales and epochs. However, CDDR is po…
The gas depletion factor in galaxy clusters: implication from Atacama Cosmology Telescope Polarization experiment measurements
Xiaogang Zheng, Jing-Zhao Qi, Shuo Cao +4
The gas depletion factor , i.e., the average ratio of the gas mass fraction to the cosmic mean baryon fraction of galaxy clusters, plays a very important role in the cosmolog…
Testing the speed of light over cosmological distances: the combination of strongly lensed and unlensed supernova Ia
Shuo Cao, Jingzhao Qi, Marek Biesiada +3
Probing the speed of light is as an important test of General Relativity but the measurements of using objects in the distant universe have been almost completely unexplored. I…
Statistical analysis with cosmic-expansion-rate measurements and two-point diagnostics
Xiaogang Zheng, Marek Biesiada, Xuheng Ding +3
Direct measurements of Hubble parameters are very useful for cosmological model parameters inference. Based on them, Sahni, Shafieloo and Starobinski introduced a two-point…
Strongly gravitational lensed SNe Ia as multi-messengers: Direct test of the Friedmann-Lema\^ıtre-Robertson-Walker metric
Jing-Zhao Qi, Shou Cao, Marek Biesiada +3
We present a new idea of testing the validity of the Friedman-Lema\^ıtre-Robertson-Walker metric, through the multiple measurements of galactic-scale strong gravitational lensing s…
Cosmological inference from standard sirens without redshift measurements
Xuheng Ding, Marek Biesiada, Xiaogang Zheng +3
The purpose of this work is to investigate the prospects of using the future standard siren data without redshift measurements to constrain cosmological parameters. With successful…
Testing and selecting cosmological models with ultra-compact radio quasars
Xiaolei Li, Shuo Cao, Xiaogang Zheng +3
In this paper, we place constraints on four alternative cosmological models under the assumption of the spatial flatness of the Universe: CPL, EDE, GCG and MPC. A new compilation o…
Ultra-compact structure in intermediate-luminosity radio quasars: building a sample of standard cosmological rulers and improving the dark energy constraints up to
Shuo Cao, Xiaogang Zheng, Marek Biesiada +3
In this paper, we present a new compiled milliarcsecond compact radio data set of 120 intermediate-luminosity quasars in the redshift range . These quasars show negl…
New observational constraints on cosmology from radio quasars
Jing-Zhao Qi, Shuo Cao, Marek Biesiada +2
Using a new recently compiled milliarcsecond compact radio data set of 120 intermediate-luminosity quasars in the redshift range , whose statistical linear sizes sho…
Cosmological investigation of multi-frequency VLBI observations of ultra-compact structure in radio quasars
Shuo Cao, Marek Biesiada, Jingzhao Qi +5
In this paper, we use multi-frequency angular size measurements of 58 intermediate-luminosity quasars reaching the redshifts and demonstrate that they can be used as stan…
A new test of gravity with the cosmological standard rulers in radio quasars
Tengpeng Xu, Shuo Cao, Jingzhao Qi +3
As an important candidate gravity theory alternative to dark energy, a class of modified gravity, which introduces a perturbation of the Ricci scalar in the Einstein-Hil…
Milliarcsecond compact structure in radio quasars and the geometry of the universe
Shuo Cao, Jingzhao Qi, Marek Biesiada +4
In this paper, by using the recently compiled set of 120 intermediate-luminosity quasars (ILQSO) observed in a single-frequency VLBI survey, we propose an improved model-independen…
Ultra-compact structure in radio quasars as a cosmological probe: a revised study of the interaction between cosmic dark sectors
Xiaogang Zheng, Marek Biesiada, Shuo Cao +2
A new compilation of angular-size/redshift data for compact radio quasars from very-long-baseline interferometry (VLBI) surveys motivates us to revisit the interaction betwee…
Measuring the speed of light with ultra-compact radio quasars
Shuo Cao, Marek Biesiada, John Jackson +3
In this paper, based on a 2.29 GHz VLBI all-sky survey of 613 milliarcsecond ultra-compact radio sources with , we describe a method of identifying the sub-sample w…
What are and diagnostics telling us in light of data?
Xiaogang Zheng, Xuheng Ding, Marek Biesiada +2
Two-point diagnostics and have been introduced as an interesting tool for testing the validity of the CDM model. Quite recently, Sahni, Shafieloo…
Testing the gas mass density profile of galaxy clusters with distance duality relation
Shuo Cao, Marek Biesiada, Xiaogang Zheng +1
In this paper, assuming the validity of distance duality relation, , where and are the angular and the luminosity distance respective…
The Distance Duality Relation from Strong Gravitational Lensing
Kai Liao, Zhengxiang Li, Shuo Cao +3
Under very general assumptions of metric theory of spacetime, photons traveling along null geodesics and photon number conservation, two observable concepts of cosmic distance, i.e…
Comparison of cosmological models using standard rulers and candles
Xiaolei Li, Shuo Cao, Xiaogang Zheng +2
In this paper, we used standard rulers and standard candles (separately and jointly) to explore five popular dark energy models under assumption of spatial flatness of the Universe…