Constraining \(f(R)\) Gravity Theory Using Weak Lensing Peak Statistics from the Canada-France-Hawaii-Telescope Lensing Survey

In this Letter, we report the observational constraints on the Hu-Sawicki \(f(R)\) theory derived from weak lensing peak abundances, which are closely related to the mass function of massive halos. In comparison with studies using optical or x-ray clusters of galaxies, weak lensing peak analyses hav...

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Bibliographic Details
Published in:arXiv.org 2016-08
Main Authors: Liu, Xiangkun, Li, Baojiu, Gong-Bo, Zhao, Mu-Chen, Chiu, Fang, Wei, Pan, Chuzhong, Wang, Qiao, Du, Wei, Yuan, Shuo, Fu, Liping, Fan, Zuhui
Format: Article
Language:English
Subjects:
Constraint modelling
Galactic clusters
Galactic halos
Galaxies
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Summary:In this Letter, we report the observational constraints on the Hu-Sawicki \(f(R)\) theory derived from weak lensing peak abundances, which are closely related to the mass function of massive halos. In comparison with studies using optical or x-ray clusters of galaxies, weak lensing peak analyses have the advantages of not relying on mass-baryonic observable calibrations. With observations from the Canada-France-Hawaii-Telescope Lensing Survey, our peak analyses give rise to a tight constraint on the model parameter \(|f_{R0}|\) for \(n=1\). The \(95\%\) CL limit is \(\log_{10}|f_{R0}| < -4.82\) given WMAP9 priors on \((\Omega_{\rm m}, A_{\rm s})\). With Planck15 priors, the corresponding result is \(\log_{10}|f_{R0}| < -5.16\).
ISSN:2331-8422
DOI:10.48550/arxiv.1607.00184