Cosmological Constraints from Cosmic Shear and CMB
Abstract
We analyse the sensitivity of cosmic shear 2-point statistics to the cosmological parameters, by using Monte Carlo Markov Chain (MCMC) methods. In particular, we investigate degeneracies among parameters and compare them to the CMB ones. Specializing on a Canada France Hawaii Telescope Legacy Survey (CFHTLS) type lensing survey and WMAP-1 year and CBI CMB data, we find cosmic shear information improves CMB cosmological parameters constraints by a factor of 1.5 - 2.5.
- Publication:
-
Gravitational Lensing Impact on Cosmology
- Pub Date:
- June 2005
- DOI:
- 10.1017/S1743921305001833
- Bibcode:
- 2005IAUS..225...75T