142 citations · 621 across the 9 of their papers we have counts for
9 papers
Median statistics and the Hubble constant
Gang Chen, Bharat Ratra
Following Gott et al. (2001), we use Huchra's final compilation of 553 measurements of the Hubble constant () to determine median statistical constraints on . We find $H_…
Galaxy Cluster Gas Mass Fraction and Hubble Parameter versus Redshift Constraints on Dark Energy
Lado Samushia, Gang Chen, Bharat Ratra
Galaxy cluster gas mass fraction versus redshift data and Hubble parameter versus redshift data are used to jointly constrain dark energy models. These constraints favor the Einste…
Supernova Ia and Galaxy Cluster Gas Mass Fraction Constraints on Dark Energy
Kyle M. Wilson, Gang Chen, Bharat Ratra
We use the Riess et al.(2004) supernova Ia apparent magnitude versus redshift data and the Allen et al.(2004) galaxy cluster gas mass fraction versus redshift data to constrain dar…
Constraints on Scalar-Field Dark Energy from Galaxy Cluster Gas Mass Fraction versus Redshift
Gang Chen, Bharat Ratra
We use the Allen et al. (2004) Chandra measurements of x-ray gas mass fraction of 26 rich clusters to place constraints on the scalar-field dark energy model with inverse power law…
Looking for Cosmological Alfven Waves in WMAP Data
Gang Chen, Pia Mukherjee, Tina Kahniashvili +2
A primordial cosmological magnetic field induces and supports vorticity or Alfven waves, which in turn generate cosmic microwave background (CMB) anisotropies. A homogeneous primor…
Constraints on Scalar-Field Dark Energy from the Cosmic Lens All-Sky Survey Gravitational Lens Statistics
Kyu-Hyun Chae, Gang Chen, Bharat Ratra +1
We use the statistics of strong gravitational lensing based on the Cosmic Lens All-Sky Survey (CLASS) data to constrain cosmological parameters in a spatially-flat, inverse power-l…