862 citations · 8.5k across the 199 of their papers we have counts for
33 papers · 1 filter
Dark energy and neutrino mass constraints from weak lensing, supernova, and relative galaxy ages
Yan Gong, Tong-Jie Zhang, Tian Lan +1
We use the current weak lensing data to constrain the equation of state of dark energy and the total mass of massive neutrinos . The constraint on would be weak i…
Alignments of Group Galaxies with Neighboring Groups
Yougang Wang, Changbom Park, Xiaohu Yang +2
Using a sample of galaxy groups found in the Sloan Digital Sky Survey Data Release 4, we measure the following four types of alignment signals: (1) the alignment between the distri…
Forecasting the Dark Energy Measurement with Baryon Acoustic Oscillations: Prospects for the LAMOST surveys
Xin Wang, Xuelei Chen, Zheng Zheng +3
The Large Area Multi-Object Spectroscopic Telescope (LAMOST) is a dedicated spectroscopic survey telescope being built in China, with an effective aperture of 4 meters and equiped…
Effects of correlation between merging steps on the global halo formation
Jun Pan, Yougang Wang, Xuelei Chen +1
The excursion set theory of halo formation is modified by adopting the fractional Brownian motion, to account for possible correlation between merging steps. We worked out analytic…
Cosmological Constraints on Invisible Decay of Dark Matter
Yan Gong, Xuelei Chen
The cold dark matter may be in a meta-stable state and decays to other particles with a very long lifetime. If the decaying products of the dark matter are weakly interacting, e.g.…
A Holographic Dark Energy Model from Ricci Scalar Curvature
Changjun Gao, Fengquan Wu, Xuelei Chen +1
Motivated by the holographic principle, it has been suggested that the dark energy density may be inversely proportional to the area of the event horizon of the Universe. However,…