On the accretion history of galaxy clusters: temporal and spatial distribution

Abstract

We analyse the results of an Eulerian AMR cosmological simulation in order to quantify the mass growth of galaxy clusters, exploring the differences between dark matter and baryons. We have determined the mass assembly histories (MAHs) of each of the mass components and computed several proxies for the instantaneous mass accretion rate (MAR). The mass growth of both components is clearly dominated by the contribution of major mergers, but high MARs can also occur during smooth accretion periods. We explored the correlations between MARs, merger events and clusters' environments, finding the mean densities in $1\le r/R_{200m}\le 1.5$ to correlate strongly with ${\Gamma }_{200m}$ in massive clusters which undergo major mergers through their MAH. From the study of the dark matter velocity profiles, we find a strong anticorrelation between the MAR proxies ${\Gamma }_{200m}$ and ${\alpha }_{200m}$. Last, we present a novel approach to study the angularly-resolved distribution of gas accretion flows in simulations, which allows to extract and interpret the main contributions to the accretion picture and to assess systematic differences between the thermodynamical properties of each of these contributions using multipolar analysis. We have preliminarily applied the method to the best numerically-resolved cluster in our simulation. Amongst the most remarkable results, we find that the gas infalling through the cosmic filaments has systematically lower entropy compared to the isotropic component, but we do not find a clear distinction in temperature.

arXiv commentaccepted for publication in MNRAS

References in corpus (57)

• SciPy 1.0--Fundamental Algorithms for Scientific Computing in Python
• A Universal Density Profile from Hierarchical Clustering
• Statistical Properties of X-ray Clusters: Analytic and Numerical Comparisons
• Cosmological SPH simulations: A hybrid multi-phase model for star formation
• Baryonic Features in the Matter Transfer Function
• Radiative Transfer in a Clumpy Universe: II. The Utraviolet Extragalactic Background
• Cosmological Parameters from Observations of Galaxy Clusters
• Cosmological Simulations with TreeSPH
• Formation of Galaxy Clusters
• Tracing cosmic evolution with clusters of galaxies
• Merger rates in hierarchical models of galaxy formation. II: Comparison with N-body simulations
• Gone with the wind: the origin of S0 galaxies in clusters
• The Structure of Dark Matter Haloes in Hierarchical Clustering Models
• Testing X-ray Measurements of Galaxy Clusters with Cosmological Simulations
• Rotation-Dependent Catastrophic Disruption of Gravitational Aggregates
• Dependence of the outer density profiles of halos on their mass accretion rate
• Haloes gone MAD: The Halo-Finder Comparison Project
• P3M-SPH simulations of the Lyman-alpha Forest
• The splashback radius as a physical halo boundary and the growth of halo mass
• The galaxy cluster mass scale and its impact on cosmological constraints from the cluster population
• Non-hydrostatic gas in the core of the relaxed galaxy cluster A1795
• On the nature of hydrostatic equilibrium in galaxy clusters
• Splashback in accreting dark matter halos
• Cool Core Clusters from Cosmological Simulations
• Hydrodynamical simulations of galaxy formation: effects of supernova feedback
• Baryon Census in Hydrodynamical Simulations of Galaxy Clusters
• On the role of AGN feedback on the thermal and chemodynamical properties of the hot intra-cluster medium
• Gas sloshing, cold front formation, and metal redistribution: the Virgo cluster as a quantitative test case
• The Physics of Galaxy Cluster Outskirts
• On determining the shape of matter distributions
• Properties of cluster satellites in hydrodynamical simulations
• The splashback radius of halos from particle dynamics. II. Dependence on mass, accretion rate, redshift, and cosmology
• Mass Accretion and its Effects on the Self-Similarity of Gas Profiles in the Outskirts of Galaxy Clusters
• Pressure of the hot gas in simulations of galaxy clusters
• Splashback Shells of Cold Dark Matter Halos
• Constraining Gas Motions in the Intra-Cluster Medium
• Mapping the kinetic Sunyaev-Zel'dovich effect toward MACS J0717.5+3745 with NIKA
• The outer profile of dark matter halos: an analytical approach
• Measuring bulk flows of the intracluster medium in the Perseus and Coma galaxy clusters using XMM-Newton
• Quantifying the Cosmic Web I: The large-scale halo ellipticity-ellipticity and ellipticity-direction correlations
• How does our choice of observable influence our estimation of the centre of a galaxy cluster? Insights from cosmological simulations
• The impact of baryonic physics on the shape and radial alignment of substructures in cosmological dark matter haloes
• Large-Scale Structure Formation: from the first non-linear objects to massive galaxy clusters
• A new multidimensional AMR Hydro+Gravity Cosmological code
• Discovery of Gas Bulk Motion in the Galaxy Cluster Abell 2256 with Suzaku
• Correlations between Triaxial Shapes and Formation History of Dark Matter Haloes
• Locations of Accretion Shocks around Galaxy Clusters and the ICM properties: insights from Self-Similar Spherical Collapse with arbitrary mass accretion rates
• ASOHF: a new adaptive spherical overdensity halo finder
• Imprints of Mass Accretion History on the Shape of the Intracluster Medium and the $T_X-M$ Relation
• Relating the structure of dark matter halos to their assembly and environment
• Galaxy cluster mergers
• Cluster-Supercluster Alignments
• Gas Loss in Simulated Galaxies as They Fall into Clusters
• Is ram-pressure stripping an efficient mechanism to remove gas in galaxies?
• Bullet Clusters in the MareNostrum Universe
• Multi-wavelength mock observations of the WHIM in a simulated galaxy cluster
• Probing the azimuthal environment of galaxies around clusters. From cluster core to cosmic filaments

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• Gas distribution from clusters to filaments in IllustrisTNG
• Stability of Cool Cores During Galaxy Cluster Growth: A Joint $Chandra$/SPT Analysis of 67 Galaxy Clusters Along a Common Evolutionary Track Spanning 9 Gyr
• Mapping "out-of-the-box" the properties of the baryons in massive halos
• The GOGREEN survey: the internal dynamics of clusters of galaxies at redshift 0.9-1.4
• Troubled cosmic flows: turbulence, enstrophy and helicity from the assembly history of the intracluster medium
• Redshift evolution of the dark matter haloes shapes
• Evolution of Splashback Boundaries and Gaseous Outskirts: Insights from Mergers of Self-similar Galaxy Clusters
• Simulation view of galaxy clusters with low X-ray surface brightness
• On the choice of the most suitable indicator for the assembly state of dark matter haloes through cosmic time
• Reconsidering the dynamical states of galaxy clusters using PCA and UMAP
• Forecasting the success of the WEAVE Wide-Field Cluster Survey on the extraction of the cosmic web filaments around galaxy clusters
• The hot gas mass fraction in halos. From Milky Way-like groups to massive clusters
• Galaxy shapes in Magneticum. I. Connecting stellar and dark matter shapes to dynamical and morphological galaxy properties and the large-scale structure
• Unravelling cosmic velocity flows: a Helmholtz-Hodge decomposition algorithm for cosmological simulations
• Void replenishment: how voids accrete matter over cosmic history
• Cosmic accretion shocks as a tool to measure the dark matter mass of galaxy clusters
• Characterising galaxy clusters' completeness function in Planck with hydrodynamical simulations
• Shape and connectivity of groups and clusters: Impact of dynamical state and accretion history
• The eventful life journey of galaxy clusters. I. Impact of DM halo and ICM properties on their full assembly histories
• The imprints of galaxy cluster internal dynamics on the Sunyaev-Zeldovich effect
• Galaxy Cluster Mass Estimation Through The Splashback Radius
• Go with the Flow: The Self-Similar and Non-Linear Behaviour of Large-Scale In- and Outflows and the Impact of Accretion Shocks from Galaxies to Galaxy Clusters
• The eventful life journey of galaxy clusters. II. Impact of mass accretion on the thermodynamical structure of the ICM
• The halo finding problem revisited: a deep revision of the ASOHF code