Journal
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume 404, Issue 1, Pages 239-246Publisher
OXFORD UNIV PRESS
DOI: 10.1111/j.1365-2966.2010.16193.x
Keywords
cosmological parameters; cosmology: observations; large-scale structure of Universe
Categories
Funding
- LPNHE and APC Paris [R32-2008-000-10130-0]
- US Department of Energy [DE-AC02-05CH11231]
Ask authors/readers for more resources
The galaxy power spectrum contains information on the growth of structure, the growth rate through redshift space distortions and the cosmic expansion through baryon acoustic oscillation features. We study the ability of two proposed experiments, BigBOSS and JDEM-PS, to test the cosmological model and general relativity. We quantify the latter result in terms of the gravitational growth index., whose value in general relativity is gamma approximate to 0.55. Significant deviations from this value could indicate new physics beyond the standard model of cosmology. The results show that BigBOSS (JDEM-PS) would be capable of measuring. with an uncertainty sigma(gamma) = 0.043 (0.054), which tightens to sigma(gamma) = 0.031 (0.038) if we include Stage III data priors, marginalizing over neutrino mass, time-varying dark energy equation of state, and other parameters. For all dark energy parameters and related figures of merit, the two experiments give comparable results. We also carry out some studies of the influence of redshift range, resolution, treatment of non-linearities and bias evolution to enable further improvement.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available