Lensing convergence and the neutrino mass scale in galaxy redshift surveys

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http://hdl.handle.net/10138/183977

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Cardona , W , Durrer , R , Kunz , M & Montanari , F 2016 , ' Lensing convergence and the neutrino mass scale in galaxy redshift surveys ' , Physical Review D , vol. 94 , no. 4 , 043007 . https://doi.org/10.1103/PhysRevD.94.043007

Title: Lensing convergence and the neutrino mass scale in galaxy redshift surveys
Author: Cardona, Wilmar; Durrer, Ruth; Kunz, Martin; Montanari, Francesco
Contributor: University of Helsinki, Helsinki Institute of Physics
Date: 2016-08-22
Language: eng
Number of pages: 11
Belongs to series: Physical Review D
ISSN: 2470-0010
URI: http://hdl.handle.net/10138/183977
Abstract: 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.
Subject: MODEL SELECTION
DARK ENERGY
114 Physical sciences
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