Testing generalized scalar-tensor theories of gravity with clusters of galaxies

Abstract

We test the generalized scalar-tensor theory in static systems, namely galaxy clusters. The Degenerate higher-order scalar-tensor (DHOST) theory modifies the Newtonian potential through effective Newtonian constant and ${\Xi }_1$ parameter in the small scale, which modifies the hydrostatic equilibrium. We utilize the well-compiled X-COP catalog consisting of 12 clusters with Intra Cluster Medium (ICM) pressure profile by Sunyaev-Zeldovich effect data and temperature profile by X-ray data for each cluster. We perform a fully Bayesian analysis modeling Navarro-Frenk-White (NFW) for the mass profile, and the simplified Vikhlinin model for the electron density. Carefully selecting suitable clusters to present our results, we find a mild to moderate, i.e, $\sim 2\sigma$ significance for a deviation from the standard scenario in 4 of the clusters. However, in terms of Bayesian evidence, we find either equivalent or mild preference for GR. We estimate a joint constraint of ${\Xi }_1=-0.030\pm 0.043$ using 8 clusters, for a modification from a $\Lambda$CDM scenario. This limit is in very good agreement with theoretical ones and an order of magnitude more stringent than the previous constraint obtained using clusters. We also quote a more conservative limit of ${\Xi }_1=-0.061\pm 0.074$. Finally, we comment on the tentative redshift dependence (${\Xi }_1(z)$), finding a mild preference ($\lesssim 2\sigma$) for the same.

Comments are Welcome

References in corpus (19)

• Unified cosmic history in modified gravity: from F(R) theory to Lorentz non-invariant models
• Bayes in the sky: Bayesian inference and model selection in cosmology
• Covariant Galileon
• Healthy theories beyond Horndeski
• Horndeski theory and beyond: a review
• Degenerate higher order scalar-tensor theories beyond Horndeski up to cubic order
• Breaking of Vainshtein screening in scalar-tensor theories beyond Horndeski
• Vainshtein mechanism after GW170817
• CLASH-X: A Comparison of Lensing and X-ray Techniques for Measuring the Mass Profiles of Galaxy Clusters
• Modified gravity inside astrophysical bodies
• The XMM Cluster Survey: Testing chameleon gravity using the profiles of clusters
• Hubble tension or a transition of the Cepheid SnIa calibrator parameters?
• Vainshtein regime in Scalar-Tensor gravity: constraints on DHOST theories
• An improved deprojection and PSF-deconvolution technique for galaxy-cluster X-ray surface-brightness profiles
• Reconstructing mass profiles of simulated galaxy clusters by combining Sunyaev-Zeldovich and X-ray images
• On the screening mechanism in DHOST theories evading gravitational wave constraints
• Gravitational transitions via the explicitly broken symmetron screening mechanism
• Multi-component DHOST analysis in galaxy clusters
• Generalised scalar-tensor theories of gravity and pressure profiles of galaxy clusters

Cited by in corpus (7)

• Shocks in the Stacked Sunyaev-Zel'dovich Profiles of Clusters II: Measurements from SPT-SZ + Planck Compton-y Map
• Looking for Traces of Non-minimally Coupled Dark Matter in the X-COP Galaxy Clusters Sample
• Constraining Chameleon screening using galaxy cluster dynamics
• The Nature of Dark Energy and Constraints on Its Hypothetical Constituents from Force Measurements
• Recent Developments in Degenerate Higher Order Scalar Tensor Theories
• Testing non-local gravity through Ultra-Diffuse Galaxies kinematics
• Caustic and hydrostatic mass bias: Implications for modified gravity