Constraints on Modified Gravity from Sunyaev-Zeldovich Cluster Surveys

Abstract

We investigate the constraining power of current and future Sunyaev-Zeldovich cluster surveys on the f(R) gravity model. We use a Fisher matrix approach, adopt self-calibration for the mass- observable scaling relation, and evaluate constraints for the SPT, Planck, SPTPol and ACTPol surveys. The modified gravity effects on the mass function, halo bias, matter power spectrum, and mass-observable relation are taken into account. We show that, relying on number counts only, the Planck cluster catalog is expected to reduce current upper limits by about a factor of four, to σfR0 = 3 {\times} 10-5 (68% confidence level). Adding the cluster power spectrum further improves the constraints to σfR0 = 10-5 for SPT and Planck, and σfR0 = 3 {\times} 10-6 for SPTPol, pushing cluster constraints significantly beyond the limit where number counts have no constraining power due to the chameleon screening mechanism. Further, the combination of both observables breaks degeneracies, especially with the expansion history (effective dark energy density and equation of state). The constraints are only mildly worsened by the use of self-calibration but depend strongly on the mass threshold of the cluster samples.

16 pages, 9 figures

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Cited by in corpus (17)

• Joint halo mass function for modified gravity and massive neutrinos I: simulations and cosmological forecasts
• Dark energy imprints on the kinematic Sunyaev-Zel'dovich signal
• A general framework to test gravity using galaxy clusters I: Modelling the dynamical mass of haloes in $f(R)$ gravity
• Derivative Chameleons
• Tests of Gravity with Galaxy Clusters
• K-mouflage effects on clusters of galaxies
• Constraining f(R) Gravity with Planck Sunyaev-Zel'dovich Clusters
• Towards Accurate Field-Level Inference of Massive Cosmic Structures
• Constraints on $f(R)$ and nDGP Modified Gravity Model Parameters with Cluster Abundances and Galaxy Clustering
• Dark Matter Halo Sparsity of Modified Gravity Scenarios
• Nonlinearities in modified gravity cosmology. II. Impacts of modified gravity on the halo properties
• Improving Constraints on Fundamental Physics Parameters with the Clustering of Sunyaev-Zeldovich Selected Galaxy Clusters
• N-body Simulations of $\gamma$ Gravity
• Constraints on Non-Gaussianity from Sunyaev--Zeldovich Cluster Surveys
• Is Dark Energy an Effective Manifestation of Non-equilibrium Thermodynamics? -- Insights from DESI
• Universality of the halo mass function in modified gravity cosmologies
• A general framework for unbiased tests of gravity using galaxy clusters