Showing 2017 · astro-ph.COShow all

23 papers · 2 filters

astro-ph.CO2017★ 9 cited

CHAM: a fast algorithm of modelling non-linear matter power spectrum in the sCreened HAlo Model

Bin Hu, Xue-Wen Liu, Rong-Gen Cai

We present a fast numerical screened halo model algorithm (CHAM) for modeling non-linear power spectrum for the alternative models to LCDM. This method has three obvious advantages…

astro-ph.CO2017★ 34 cited

Cosmological model-independent test of CDM with two-point diagnostic by the observational Hubble parameter data

Shu-Lei Cao, Xiao-Wei Duan, Xiao-Lei Meng +1

Aiming at exploring the nature of dark energy (DE), we use forty-three observational Hubble parameter data (OHD) in the redshift range to make a cosmological…

astro-ph.CO2017★ 4 cited

Effect of Massive Neutrinos on the Position of Cold Dark Matter Halo: Revealed via Delaunay Triangulation Void

Jian Qin, Yu Liang, Cheng Zhao +3

Using cosmological -body simulation which coevolves cold dark matter (CDM) and neutrino particles, we discover the local effect of massive neutrinos on the spatial distribution…

astro-ph.CO2017★ 63 cited

Do current cosmological observations rule out all Covariant Galileons?

Simone Peirone, Noemi Frusciante, Bin Hu +2

We revisit the cosmology of Covariant Galileon gravity in view of the most recent cosmological data sets, including weak lensing. As a higher derivative theory, Covariant Galileon…

astro-ph.CO2017★ 6 cited

Constraints on the cosmic distance duality relation with simulated data of gravitational waves from the Einstein Telescope

Tao Yang, R. F. L. Holanda, Bin Hu

The cosmic distance duality relation (CDDR) has been test through several astronomical observations in the last years. This relation establishes a simple equation relating the angu…

astro-ph.CO2017★ 17 cited

The relation between cosmological redshift and scale factor for photons

Shuxun Tian

The cosmological constant problem has become one of the most important ones in modern cosmology. In this paper, we try to construct a model that can avoid the cosmological constant…

astro-ph.CO2017★ 37 cited

Model-independent Constraints on Cosmic Curvature and Opacity

Guo-Jian Wang, Jun-Jie Wei, Zheng-Xiang Li +2

In this paper, we propose to estimate the spatial curvature of the universe and the cosmic opacity in a model-independent way with expansion rate measurements, , and type Ia…

astro-ph.CO2017★ 14 cited

Standard sirens and dark sector with Gaussian process

Rong-Gen Cai, Tao Yang

The gravitational waves from compact binary systems are viewed as a standard siren to probe the evolution of the universe. This paper summarizes the potential and ability to use th…

astro-ph.CO2017★ 62 cited

A comparison of Einstein-Boltzmann solvers for testing General Relativity

E. Bellini, A. Barreira, N. Frusciante +24

We compare Einstein-Boltzmann solvers that include modifications to General Relativity and find that, for a wide range of models and parameters, they agree to a high level of preci…

astro-ph.CO2017★ 4 cited

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…

astro-ph.CO2017★ 115 cited

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…

astro-ph.CO2017★ 62 cited

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…

astro-ph.CO2017★ 30 cited

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…

astro-ph.CO2017★ 46 cited

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…

astro-ph.CO2017★ 1 cited

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…

astro-ph.CO2017★ 119 cited

Strongly lensed repeating Fast Radio Bursts as precision probes of the universe

Zhengxiang Li, He Gao, Xu-Heng Ding +2

Fast Radio bursts (FRBs), bright transients with millisecond durations at GHz and typical redshifts probably , are likely to be gravitationally lensed by intervening g…

astro-ph.CO2017★ 2 cited

The Dynamics of Inhomogeneous Dark Energy

Shuxun Tian, Shuo Cao, Zong-Hong Zhu

In this paper, by analyzing the dynamics of the inhomogeneous quintessence dark energy, we find that the gradient energy of dark energy will oscillate and gradually vanish, which i…

astro-ph.CO2017★ 20 cited

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…

astro-ph.CO2017★ 30 cited

Test of the FLRW metric and curvature with strong lens time delays

Kai Liao, Zhengxiang Li, Guo-Jian Wang +1

We present a new model-independent strategy for testing the Friedmann-Lema\^ıtre-Robertson-Walker metric and constraining cosmic curvature, based on future time delay measurements…

astro-ph.CO2017★ 10 cited

Testing backreaction effects with observational Hubble parameter data

Shu-Lei Cao, Huan-Yu Teng, Hao-Ran Yu +2

In order to explore the generic properties of a backreaction model for explaining the accelerated expansion of the Universe, we exploit two metrics to describe the late time Univer…

astro-ph.CO2017★ 156 cited

Precision cosmology from future lensed gravitational wave and electromagnetic signals

Kai Liao, Xi-Long Fan, Xu-Heng Ding +2

The standard siren approach of gravitational wave cosmology appeals to the direct luminosity distance estimation through the waveform signals from inspiralling double compact binar…

astro-ph.CO2017★ 10 cited

Physical condition for the slowing down of cosmic acceleration

Ming-Jian Zhang, Jun-Qing Xia

The possible slowing down of cosmic acceleration was widely studied. However, the imposition of dark energy parametrization brought some tensions. In our recent paper, we test this…

astro-ph.CO2017★ 53 cited

Test of parametrized post-Newtonian gravity with galaxy-scale strong lensing systems

Shuo Cao, Xiaolei Li, Marek Biesiada +3

Based on a mass-selected sample of galaxy-scale strong gravitational lenses from the SLACS, BELLS, LSD and SL2S surveys and using a well-motivated fiducial set of lens-galaxy param…