The Internal Robustness of Growth Rate data [CEA]

http://arxiv.org/abs/1806.10822


We perform an Internal Robustness analysis (iR) to a compilation of the most recent $f\sigma_8(z)$ data, using the framework of 1209.1897. The method analyzes combinations of subsets in the dataset in a Bayesian model comparison way, potentially finding outliers, subsets of data affected by systematics or new physics. In order to validate our analysis and assess its sensitivity we performed several cross-checks, for example by removing some of the data or by adding artificially contaminated points, while we also generated mock datasets in order to estimate confidence regions of the iR. Applying this methodology, we found no anomalous behavior in the $f\sigma_8(z)$ dataset, thus validating its internal robustness.

Read this paper on arXiv…

B. Sagredo, S. Nesseris and D. Sapone
Fri, 29 Jun 18
56/58

Comments: 10 pages, 1 table, 5 figures. Comments welcome