Constraining ƒ (R) gravity theory using weak lensing peak statistics from the Canada-France-Hawaii-Telescope Lensing Survey

Xiangkun Liu, Baojiu Li, Gong-Bo Zhao, Mu-Chen Chiu, Wei Fang, Chuzhong Pan, Qiao Wang, Wei Du, Shuo Yuan, Liping Fu, Zuhui Fan

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Abstract

In this Letter, we report the observational constraints on the Hu-Sawicki ƒ (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 |ƒR0| for n=1. The 95% C.L. is log10|ƒR0|<−4.82 given WMAP9 priors on (Ωm, As). With Planck15 priors, the corresponding result is log10|ƒR0|<−5.16.
Original languageEnglish
Article number051101
JournalPhysical Review Letters
Volume117
DOIs
Publication statusPublished - 27 Jul 2016

Keywords

  • astro-ph.CO
  • RCUK
  • STFC
  • ST/K00042X/1
  • ST/H008519/1
  • ST/K00087X/1
  • ST/K003267/1
  • ST/L00075X/1
  • RF040335
  • uploaded-in-3-months-elsewhere

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