2011

Figures of merit and constraints from testing General Relativity using the latest cosmological data sets including refined COSMOS 3D weak lensing

Dossett, Jason, Moldenhauer, Jacob, Ishak, Mustapha

Understand

We use cosmological constraints from current data sets and a figure of merit (FoM) approach to probe any deviations from general relativity (GR) at cosmological scales.

The FoM approach is used to study the constraining power of various combinations of data sets on modified gravity (MG) parameters.
We use recently refined HST-COSMOS weak-lensing tomography data, ISW-galaxy cross correlations from 2MASS and SDSS LRG surveys, matter power spectrum from SDSS-DR7 (MPK), WMAP7 temperature and polarization spectra, BAO from 2DF and SDSS-DR7, and Union2 compilation of supernovae, in addition to other bounds from H_0 measurements and BBN.
We use 3 parametrizations of MG parameters that enter the perturbed field equations.

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