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

Liu, Xiangkun and Li, Baojiu and Zhao, Gongbo and Chiu, Mu-Chen and Fang, Wei and Pan, Chuzhong and Wang, Qiao and Du, Wei and Yuan, Shuo and Fu, Liping and Fan, Zuhui (2016) 'Constraining f(R) gravity theory using weak lensing peak statistics from the Canada-France-Hawaii-Telescope Lensing Survey.', Physical review letters., 117 (5). 051101.


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 |fR0| for n=1. The 95% C.L. is log10|fR0|<−4.82 given WMAP9 priors on (Ωm, As). With Planck15 priors, the corresponding result is log10|fR0|<−5.16.

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Publisher statement:Reprinted with permission from the American Physical Society: Physical Review Letters 117, 051101 © 2016 by the American Physical Society. Readers may view, browse, and/or download material for temporary copying purposes only, provided these uses are for noncommercial personal purposes. Except as provided by law, this material may not be further reproduced, distributed, transmitted, modified, adapted, performed, displayed, published, or sold in whole or part, without prior written permission from the American Physical Society.
Date accepted:29 June 2016
Date deposited:22 August 2016
Date of first online publication:27 July 2016
Date first made open access:No date available

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