PACT. II. Pressure profiles of galaxy clusters using Planck and ACT

Abstract

The pressure of hot gas in groups and clusters of galaxies is a key physical quantity, which is directly linked to the total mass of the halo and several other thermodynamical properties. In the wake of previous observational works on the hot gas pressure distribution in massive halos, we have investigated a sample of 31 clusters detected in both the Planck and Atacama Cosmology Telescope (ACT), MBAC surveys. We made use of an optimised Sunyaev-Zeldovich (SZ) map reconstructed from the two data sets and tailored for the detection of the SZ effect, taking advantage of both Planck coverage of large scales and the ACT higher spatial resolution. Our average pressure profile covers a radial range going from 0.04xR_500 in the central parts to 2.5xR_500 in the outskirts. In this way, it improves upon previous pressure-profile reconstruction based on SZ measurements. It is compatible, as well as competitive, with constraints derived from joint X-ray and SZ analysis. This work demonstrates the possibilities offered by large sky surveys of the SZ effect with multiple experiments with different spatial resolutions and spectral coverages, such as ACT and Planck.

11 pages, 6 figures, A&A in press

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Cited by in corpus (13)

• The gravitational field of X-COP galaxy clusters
• X-ray surface brightness and gas density profiles of galaxy clusters up to 3*R500c with SRG/eROSITA
• The Evolution and Mass Dependence of Galaxy Cluster Pressure Profiles at 0.05 $\le z\le$ 0.60 and $4\times 10^{14}$ M${}_{\odot }$ $\le {\text{M}}_{500}\le 30\times 10^{14}$ M${}_{\odot }$
• Joint measurement of the galaxy cluster pressure profile with Planck and SPT-SZ
• CHEX-MATE: CLUster Multi-Probes in Three Dimensions (CLUMP-3D), I. Gas Analysis Method using X-ray and Sunyaev-Zel'dovich Effect Data
• Exploring the mass and redshift dependence of the cluster pressure profile with stacks on thermal SZ maps
• CHEX-MATE: pressure profiles of 6 galaxy clusters as seen by SPT and Planck
• A halo model of extragalactic contamination to CMB lensing, delensing, and cross-correlations
• Characterising galaxy clusters' completeness function in Planck with hydrodynamical simulations
• Exploiting the high-resolution NIKA2 data to study the intracluster medium and dynamical state of ACT-CL J0240.0+0116
• HI Intensity Mapping cross-correlation with thermal SZ fluctuations: forecasted cosmological parameters estimation for FAST and Planck
• Estimating the heterogeneity of pressure profiles within a complete sample of 55 galaxy clusters: a Bayesian Hierarchical Model
• A comparative test of different pressure profile models in clusters of galaxies using recent ACT data