Cosmological Constraints from Cosmic Shear in CFHTLenS

Details Cosmological Constraints from Cosmic Shear in CFHTLenS Cosmological Constraints from Cosmic Shear in CFHTLenS

Jan 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21944005k&link_type=abstract

American Astronomical Society, AAS Meeting #219, #440.05

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We present constraints on cosmological parameters from weak gravitational lensing by the large-scale structure. Using multi-band optical data over 155 square degrees of the CFHTLenS survey, we measure the shear correlation out to very large, linear scales. We calculate the covariance of the data from N-body and ray-tracing simulations. We sample the parameter space using Population Monte Carlo (PMC), and obtain robust constraints on LCDM and dark-energy models. We estimate the Bayesian evidence which allow us to compare different cosmological models.

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