An accurate method of modeling cluster scaling relations in modified gravity

Abstract

We propose a new method to model cluster scaling relations in modified gravity. Using a suite of non-radiative hydrodynamical simulations, we show that the scaling relations of cumulative 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 $\Lambda$CDM model with a precision of $\sim 3\%$. 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.

7 pages, 5 figures, revised version, accepted for publication in PRD

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Cited by in corpus (17)

• The Novel Probes Project -- Tests of Gravity on Astrophysical Scales
• Realistic simulations of galaxy formation in f(R) modified gravity
• Speeding up N-body simulations of modified gravity: Vainshtein screening models
• Marked clustering statistics in $f(R)$ gravity cosmologies
• Galaxy formation in the brane world I: overview and first results
• A general framework to test gravity using galaxy clusters I: Modelling the dynamical mass of haloes in $f(R)$ gravity
• The impact of modified gravity on the Sunyaev-Zel'dovich effect
• A general framework to test gravity using galaxy clusters II: A universal model for the halo concentration in $f(R)$ gravity
• Tests of Gravity with Galaxy Clusters
• A general framework to test gravity using galaxy clusters IV: Cluster and halo properties in DGP gravity
• Simulation techniques for modified gravity
• A general framework to test gravity using galaxy clusters III: Observable-mass scaling relations in $f(R)$ gravity
• Constraints on $f(R)$ and nDGP Modified Gravity Model Parameters with Cluster Abundances and Galaxy Clustering
• Can background cosmology hold the key for modified gravity tests?
• A general framework to test gravity using galaxy clusters VI: Realistic galaxy formation simulations to study clusters in modified gravity
• A general framework to test gravity using galaxy clusters V: A self-consistent pipeline for unbiased constraints of $f(R)$ gravity
• A general framework for unbiased tests of gravity using galaxy clusters