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- Title
Constraints on Growth Index from LSS.
- Authors
Pouri, Athina; Basilakos, Spyros; Plionis, Manolis; Heavens, A. F.; Starck, J.-L.; Krone-Martins, A.
- Abstract
We utilize the clustering properties of the Luminous Red Galaxies (LRGs) and the growth rate data in order to constrain the growth index (γ) of the linear matter fluctuations based on a standard χ2 joint likelihood analysis between theoretical expectations and data. We find a value of γ=0.56± 0.05, perfectly consistent with the expectations of the ΛCDM model, and Ωm0 =0.29± 0.02, in very good agreement with the latest Planck results. Our analysis provides significantly more stringent growth index constraints with respect to previous studies as indicated by the fact that the corresponding uncertainty is only ∼ 0.09 γ.
- Publication
Proceedings of the International Astronomical Union, 2014, Vol 10, Issue S306, p255
- ISSN
1743-9213
- Publication type
Article
- DOI
10.1017/S1743921314013866