Model-independent cosmological constraints from growth and expansion

  title={Model-independent cosmological constraints from growth and expansion},
  author={Benjamin L’Huillier and Arman Shafieloo and Hyungjin Kim Kasi and Ust and Waterloo},
  journal={Monthly Notices of the Royal Astronomical Society},
Reconstructing the expansion history of the Universe from type Ia supernovae data, we fit the growth rate measurements and put model-independent constraints on some key cosmological parameters, namely, $\Omega_\mathrm{m},\gamma$, and $\sigma_8$. The constraints are consistent with those from the concordance model within the framework of general relativity, but the current quality of the data is not sufficient to rule out modified gravity models. Adding the condition that dark energy density… 

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