Université de GenèveDépartement de Physique ThéoriqueCAP Genève

Lensing convergence and the neutrino mass scale in galaxy redshift surveys

22. August 2016
Cite as: 
W. Cardona, R. Durrer, M. Kunz, and F. Montanari, "Lensing convergence in galaxy redshift surveys", Phys. Rev. D 94, 043007 (2016) [arXiv:1603.06481]

We demonstrate the importance of including the lensing contribution in galaxy clustering analyses with large galaxy redshift surveys. It is well known that radial cross-correlations between different redshift bins of galaxy surveys are dominated by lensing. But we show here that also neglecting lensing in the autocorrelations within one bin severely biases cosmological parameter estimation with redshift surveys. It leads to significant shifts for several cosmological parameters, most notably the scalar spectral index and the neutrino mass scale. Especially the latter parameter is one of the main targets of future galaxy surveys.


Département de Physique Théorique
Université de Genève
24, quai Ernest Ansermet
1211 Genève 4
Directions & contact