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Accurate method of modeling cluster scaling relations in modified gravity.

He, J.-h. and Li, B. (2016) 'Accurate method of modeling cluster scaling relations in modified gravity.', Physical review D., 93 (12). p. 123512.

Abstract

We propose a new method to model cluster scaling relations in modified gravity. Using a suite of nonradiative hydrodynamical simulations, we show that the scaling relations of accumulated gas quantities, such as the Sunyaev-Zel’dovich effect (Compton-y parameter) and the x-ray Compton-y parameter, can be accurately predicted using the known results in the ΛCDM model with a precision of ∼3%. This method provides a reliable way to analyze the gas physics in modified gravity using the less demanding and much more efficient pure cold dark matter simulations. Our results therefore have important theoretical and practical implications in constraining gravity using cluster surveys.

Item Type:Article
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Status:Peer-reviewed
Publisher Web site:http://dx.doi.org/10.1103/PhysRevD.93.123512
Publisher statement:Reprinted with permission from the American Physical Society: He, J.-h. and Li, B. (2016) 'Accurate method of modeling cluster scaling relations in modified gravity.', Physical review D., 93 . p. 123512 © 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:22 May 2016
Date deposited:19 August 2016
Date of first online publication:08 June 2016
Date first made open access:19 August 2016

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