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Subhalo abundance matching in f(R) gravity.

He, Jian-hua and Li, Baojiu and Baugh, Carlton M. (2016) 'Subhalo abundance matching in f(R) gravity.', Physical review letters., 117 (22). p. 221101.


Using the liminality N-body simulations of Shi et al., we present the first predictions for galaxy clustering in f(R) gravity using subhalo abundance matching. We find that, for a given galaxy density, even for an f(R) model with fR0=−10−6, for which the cold dark matter clustering is very similar to the cold dark matter model with a cosmological constant (ΛCDM), the predicted clustering of galaxies in the f(R) model is very different from ΛCDM. The deviation can be as large as 40% for samples with mean densities close to that of L∗ galaxies. This large deviation is testable given the accuracy that future large-scale galaxy surveys aim to achieve. Our result demonstrates that galaxy surveys can provide a stringent test of general relativity on cosmological scales, which is comparable to the tests from local astrophysical observations.

Item Type:Article
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Publisher statement:Reprinted with permission from the American Physical Society: Physical Review Letters 117, 221101 © (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:01 November 2016
Date deposited:07 December 2016
Date of first online publication:21 November 2016
Date first made open access:No date available

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