76 citations · 175 across the 5 of their papers we have counts for
5 papers
Comparison of dark energy models after Planck 2015
Yue-Yao Xu, Xin Zhang
We make a comparison for ten typical, popular dark energy models according to their capabilities of fitting the current observational data. The observational data we use in this wo…
Strong gravitational lensing constraints on holographic dark energy
Jing-Lei Cui, Yue-Yao Xu, Jing-Fei Zhang +1
Strong gravitational lensing (SGL) has provided an important tool for probing galaxies and cosmology. In this paper, we use the SGL data to constrain the holographic dark energy mo…
Probing the Mass Distributions in NGC 1407 and Its Associated Group with the X-ray Imaging Spectroscopic and Optical Photometric and Line-strength Indices Data
Zhongli Zhang, Haiguang Xu, Yu Wang +3
We present a study of the mass distributions in the bright E0 galaxy NGC 1407 and its associated group by analyzing the high quality Chandra and ROSAT X-ray spectroscopic data. In…
Chandra Observation of the Cluster of Galaxies MS 0839.9+2938 at z=0.194: the Central Excess Iron and SN Ia Enrichment
Yu Wang, Haiguang Xu, Zhongli Zhang +4
We present the Chandra study of the intermediately distant cluster of galaxies MS 0839.9+2938. By performing both the projected and deprojected spectral analyses, we find that the…
Chandra Study of X-Ray Point Sources in the Early-Type Galaxy NGC 4552 (M89)
Yueheng Xu, Haiguang Xu, Zhongli Zhang +3
We present a Chandra ACIS study of the early-type galaxy NGC 4552. We detect 47 X-ray point sources, most of which are likely LMXBs, within 4 R_e. The brightest X-ray source coinci…