Galaxy cluster mergers

Abstract

We present the results of an Eulerian adaptive mesh refinement (AMR) hydrodynamical and N-body simulation in a $\Lambda$CDM cosmology. The simulation incorporates common cooling and heating processes for primordial gas. A specific halo finder has been designed and applied in order to extract a sample of galaxy clusters directly obtained from the simulation without considering any resimulating scheme. We have studied the evolutionary history of the cluster halos, and classified them into three categories depending on the merger events they have undergone: major mergers, minor mergers, and relaxed clusters. The main properties of each one of these classes and the differences among them are discussed. The collisions among galaxy clusters are produced naturally by the non-linear evolution in the simulated cosmological volume, no controlled collisions have been considered. We pay special attention to discuss the role of merger events as a source of feedback and reheating, and their effects on the existence of cool cores in galaxy clusters, as well as in the scaling relations.

17 pages, 11 figures, accepted for publication in MNRAS

References in corpus (13)

• Chandra temperature profiles for a sample of nearby relaxed galaxy clusters
• The impact of mergers on relaxed X-ray clusters - I. Dynamical evolution and emergent transient structures
• Statistics of X-ray observables for the cooling-core and non-cooling core galaxy clusters
• Temperature profiles of a representative sample of nearby X-ray galaxy clusters
• The impact of mergers on relaxed X-ray clusters - II. Effects on global X-ray and SZ properties and their scaling relations
• Why Do Only Some Galaxy Clusters Have Cool Cores?
• On the Origin of Cores in Simulated Galaxy Clusters
• The impact of mergers on relaxed X-ray clusters - III. Effects on compact cool cores
• Modelling Shock Heating in Cluster Mergers: I. Moving Beyond the Spherical Accretion Model
• The evolution of clusters in the CLEF cosmological simulation: X-ray structural and scaling properties
• The chemical enrichment of the ICM from hydrodynamical simulations
• Nature versus Nurture: The curved spine of the galaxy cluster X-ray luminosity -- temperature relation
• Entropy profiles in X-ray luminous galaxy clusters at z>0.1

Cited by in corpus (30)

• Introducing the Illustris Project: the evolution of galaxy populations across cosmic time
• Cool Core Clusters from Cosmological Simulations
• On the role of AGN feedback on the thermal and chemodynamical properties of the hot intra-cluster medium
• Cosmology and Astrophysics from Relaxed Galaxy Clusters I: Sample Selection
• Second order Fermi reacceleration mechanisms and large scale synchrotron radio emission in intra-cluster bridges
• Rhapsody-G simulations I: the cool cores, hot gas and stellar content of massive galaxy clusters
• The impact of numerical viscosity in SPH simulations of galaxy clusters
• 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
• The heart of galaxy clusters: demographics and physical properties of cool-core and non-cool-core halos in the TNG-Cluster simulation
• On the accretion history of galaxy clusters: temporal and spatial distribution
• The Three Hundred project: galaxy cluster mergers and their impact on the stellar component of brightest cluster galaxies
• Massive relic galaxies prefer dense environments
• Troubled cosmic flows: turbulence, enstrophy and helicity from the assembly history of the intracluster medium
• A study of cool core resiliency and entropy mixing in simulations of galaxy cluster mergers
• 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
• The Double Galaxy Cluster Abell 2465 I. Basic Properties: Optical Imaging and Spectroscopy
• A cluster pair : A3532 and A3530
• XMM-Newton view of the shock heating in an early merging cluster, CIZA J1358.9$-$4750
• How the cool-core population transitions from galaxy groups to massive clusters: A comparison of the largest Magneticum simulation with eROSITA, XMM-Newton, Chandra and LOFAR observations
• The double galaxy cluster Abell 2465 - II. Star formation in the cluster
• Identifying Galaxy Cluster Mergers with Deep Neural Networks using Idealized Compton-y and X-ray maps
• Simulation-based marginal likelihood for cluster strong lensing cosmology
• The eventful life journey of galaxy clusters. I. Impact of DM halo and ICM properties on their full assembly histories
• Timing the last major merger of galaxy clusters with large halo sparsity
• The eventful life journey of galaxy clusters. II. Impact of mass accretion on the thermodynamical structure of the ICM
• The signature of major mergers on the hydrostatic mass bias of galaxy clusters
• The origin of the intra-cluster light in The Three Hundred simulations
• The complex intracluster medium of Abell 1569 and its interaction with central radio galaxies