Can simulations reproduce the observed temperature-mass relation for clusters of galaxies?

Abstract

It has become increasingly apparent that traditional hydrodynamical simulations of galaxy clusters are unable to reproduce the observed properties of galaxy clusters, in particular overpredicting the mass corresponding to a given cluster temperature. Such overestimation may lead to systematic errors in results using galaxy clusters as cosmological probes, such as constraints on the density perturbation normalization sigma_8. In this paper we demonstrate that inclusion of additional gas physics, namely radiative cooling and a possible preheating of gas prior to cluster formation, is able to bring the temperature-mass relation in the innermost parts of clusters into good agreement with recent determinations by Allen, Schmidt & Fabian using Chandra data.

5 pages, submitted to MNRAS

References in corpus (5)

• Measuring ${\Omega }_m$ with the ROSAT Deep Cluster Survey
• The X-ray virial relations for relaxed lensing clusters observed with Chandra
• The effect of radiative cooling on scaling laws of X-ray groups and clusters
• Constraining the Matter Power Spectrum Normalization using the SDSS/RASS and REFLEX Cluster surveys
• The Mass-Temperature Relation of 22 Nearby Clusters

Cited by in corpus (27)

• The structural and scaling properties of nearby galaxy clusters - II. The M-T relation
• The History of the Baryon Budget: Cosmic Logistics in a Hierarchical Universe
• The mass profile of A1413 observed with XMM-Newton: implications for the M-T relation
• Modified-Entropy Models for the Intracluster Medium
• Cosmological constraints from the local X-ray luminosity function of the most X-ray luminous galaxy clusters
• The Effect of Cooling and Preheating on the X-ray Properties of Clusters of Galaxies
• Hydrodynamical simulations of the Sunyaev-Zel'dovich effect: cluster scaling relations and X-ray properties
• The effect of non--gravitational gas heating in groups and clusters of galaxies
• Cooling and heating the ICM in hydrodynamical simulations
• X-Ray Scaling Relations of Galaxy Groups in a Hydrodynamic Cosmological Simulation
• Evolution at z>0.5 of the X-ray properties of simulated galaxy clusters: comparison with the observational constraints
• Simulating galaxy clusters -- I. Thermal and chemical properties of the intra-cluster medium
• Cluster Sunyaev-Zeldovich Effect Scaling Relations
• The impact of galaxy formation on X-ray groups
• The Impact of Halo Properties, Energy Feedback and Projection Effects on the Mass-SZ Flux Relation
• An analytic investigation of the scatter in the integrated X-ray properties of galaxy groups and clusters
• The SZ Effect Signature of Excess Entropy in Distant, Massive Clusters
• A theoretical study of the mass temperature relation for clusters of galaxies
• The Cluster Gas Mass - Temperature Relation: Evidence for a High Level of Preheating
• SZE Signals in Cluster Models
• The power spectrum amplitude from clusters revisited: σ_8 using simulations with preheating and cooling
• Moderate Steepening of Galaxy Cluster Dark Matter Profiles by Baryonic Pinching
• A theoretical study of the luminosity temperature relation for clusters of galaxies
• Cosmological Simulations of Massive Compact High-z Galaxies
• Superclusters with thermal SZ effect surveys
• Simulated X-ray Cluster Temperature Maps
• Halo Model Analysis of Cluster Statistics