Modelling Baryonic Effects on Galaxy Cluster Mass Profiles

Abstract

Gravitational lensing is a powerful probe of the mass distribution of galaxy clusters and cosmology. However, accurate measurements of the cluster mass profiles are limited by uncertainties in cluster astrophysics. In this work, we present a physically motivated model of baryonic effects on the cluster mass profiles, which self-consistently takes into account the impact of baryons on the concentration as well as mass accretion histories of galaxy clusters. We calibrate this model using the Omega500 hydrodynamical cosmological simulations of galaxy clusters with varying baryonic physics. Our model will enable us to simultaneously constrain cluster mass, concentration, and cosmological parameters using stacked weak lensing measurements from upcoming optical cluster surveys.

12 pages, 7 figures, 2 tables, accepted for publication in MNRAS

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• Tests of Gravity with Galaxy Clusters
• The GOGREEN survey: the internal dynamics of clusters of galaxies at redshift 0.9-1.4
• Probing Cosmology and Cluster Astrophysics with Multi-Wavelength Surveys I. Correlation Statistics
• The Borg Cube Simulation: Cosmological Hydrodynamics with CRK-SPH
• The impact of baryons on the internal structure of dark matter haloes from dwarf galaxies to superclusters in the redshift range 0<z<7
• Towards 1% accurate galaxy cluster masses: Including baryons in weak-lensing mass inference
• Mass accretion rates of the HectoMAP clusters of galaxies
• Beyond Mass: Detecting Secondary Halo Properties with Galaxy-Galaxy Lensing
• AMICO galaxy clusters in KiDS-1000: cosmological constraints and mass calibration from counts and weak lensing
• Mass bias and cosmological constraints from Planck cluster clustering
• The Pseudo Evolution of Galaxy-Cluster Masses and Its Connection to Mass Density Profile