Abstract
We revisit the cosmological viability of the Hu-Sawicki modified gravity scenario. The impact of such a modification on the different cosmological observables, including gravitational waves, is carefully described. The most recent cosmological data, as well as constraints on the relationship between the clustering parameter and the current matter mass-energy density from cluster number counts and weak lensing tomography, are considered in our numerical calculations. The strongest bound we find is at 95% C.L. Forthcoming cluster surveys covering in the sky, with galaxy surface densities of could improve the precision in the - relationship, tightening the above constraint.
- Received 4 August 2014
DOI:https://doi.org/10.1103/PhysRevD.90.103512
© 2014 American Physical Society