Simulating the LOcal Web (SLOW): I. Anomalies in the local density field

Abstract

Context: Several observations of the local Universe (LU) point towards the existence of very prominent structures. The presence of massive galaxy clusters and local super clusters on the one hand, but also large local voids and under-densities on the other hand. However, it is highly non trivial to connect such different observational selected tracers to the underlying dark matter (DM) distribution. Methods (abridged): We used a 500 Mpc/h large constrained simulation of the LU with initial conditions based on peculiar velocities derived from the CosmicFlows-2 catalogue and follow galaxy formation physics directly in the hydro-dynamical simulations to base the comparison on stellar masses of galaxies or X-ray luminosity of clusters. We also used the 2668 Mpc/h large cosmological box from the Magneticum simulations to evaluate the frequency of finding such anomalies in random patches within simulations. Results: We demonstrate that haloes and galaxies in our constrained simulation trace the local DM density field very differently. Thereby, this simulation reproduces the observed 50% under-density of galaxy clusters and groups within the sphere of ~100 Mpc when applying the same mass or X-ray luminosity limit used in the observed cluster sample (CLASSIX), which is consistent with a ~1.5$\sigma$ feature. At the same time, the simulation reproduces the observed over-density of massive galaxy clusters within the same sphere, which on its own also corresponds to a ~1.5$\sigma$ feature. Interestingly, we find that only 44 out of 15635 random realizations (i.e. 0.28%) are matching both anomalies, making the LU to be a ~3$\sigma$ environment. We finally compared a mock galaxy catalogue with the observed distribution of galaxies in the LU, finding also a match to the observed factor of two over-density at ~16 Mpc as well as the observed 15% under-density at ~40 Mpc distance.

arXiv comment16 pages, 12 figure, accepted for publication in A&A

References in corpus (89)

• Seven-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• Planck 2013 results. XVI. Cosmological parameters
• Populating a cluster of galaxies - I. Results at z=0
• The Optical and Near-Infrared Properties of Galaxies: I. Luminosity and Stellar Mass Functions
• Statistical Properties of X-ray Clusters: Analytic and Numerical Comparisons
• Cosmological SPH simulations: A hybrid multi-phase model for star formation
• Modeling feedback from stars and black holes in galaxy mergers
• Using the Evolution of Clusters to Constrain Omega
• Substructures in hydrodynamical cluster simulations
• Improving convergence in smoothed particle hydrodynamics simulations without pairing instability
• Theoretical Challenges in Galaxy Formation
• Chemical enrichment in cosmological, smoothed particle hydrodynamics simulations
• Cosmicflows-2: The Data
• Measurements of the Hubble Constant: Tensions in Perspective
• The Cosmic Energy Inventory
• Cosmicflows-3
• Cosmological simulations of black hole growth: AGN luminosities and downsizing
• Our Peculiar Motion Away from the Local Void
• Chemical enrichment of galaxy clusters from hydrodynamical simulations
• Turbulent gas motions in galaxy cluster simulations: The role of SPH viscosity
• The Laniakea supercluster of galaxies
• Simulating the effect of AGN feedback on the metal enrichment of galaxy clusters
• Constrained Simulations of the Real Universe: II. Observational Signatures of Intergalactic Gas in the Local Supercluster Region
• Wiener Reconstruction of The Large Scale Structure
• The APOSTLE project: Local Group kinematic mass constraints and simulation candidate selection
• SZ effects in the Magneticum Pathfinder Simulation: Comparison with the Planck, SPT, and ACT results
• Galaxy groups and clouds in the Local (z~0.01) universe
• Thermal Conduction in Simulated Galaxy Clusters
• Physical Bayesian modelling of the non-linear matter distribution: new insights into the Nearby Universe
• Galaxy Groups: A 2MASS Catalog
• Cosmicflows-4
• Constrained Simulations of the Real Universe: the Local Supercluster
• ELUCID - Exploring the Local Universe with reConstructed Initial Density field III: Constrained Simulation in the SDSS Volume
• Galaxy Clustering and Galaxy Bias in a Lambda-CDM Universe
• Cooling and heating the ICM in hydrodynamical simulations
• Origin and properties of dual and offset active galactic nuclei in a cosmological simulation at z=2
• Wiener Reconstruction of Large-Scale Structure from Peculiar Velocities
• The Redshift Evolution of the Mean Temperature, Pressure, and Entropy Profiles in 80 SPT-Selected Galaxy Clusters
• The Hestia project: simulations of the Local Group
• Investigating the velocity structure and X-ray observable properties of simulated galaxy clusters with PHOX
• Simulating the Formation of the Local Galaxy Population
• A Comparison of X-ray and Strong Lensing Properties of Simulated X-ray Clusters
• Gone after one orbit: How cluster environments quench galaxies
• 3D Velocity and Density Reconstructions of the Local Universe with Cosmicflows-1
• The imprints of local superclusters on the Sunyaev-Zel'dovich signals and their detectability with Planck
• Mapping deflections of extragalactic Ultra-High Energy Cosmic Rays in magnetohydrodynamic simulations of the Local Universe
• The extended ROSAT-ESO Flux Limited X-ray Galaxy Cluster Survey (REFLEX II) IV. X-ray Luminosity Function and First Constraints on Cosmological Parameters
• The Imprint of Reionization on the Star Formation Histories of Dwarf Galaxies
• Cosmic variance of the local Hubble flow in large-scale cosmological simulations
• Observational evidence for a local underdensity in the Universe and its effect on the measurement of the Hubble Constant
• Reconstructing cosmological initial conditions from galaxy peculiar velocities. I. Reverse Zeldovich Approximation
• Simulations of the Local Universe Constrained by Observational Peculiar Velocities
• AGN contamination of galaxy-cluster thermal X-ray emission: predictions for eRosita from cosmological simulations
• Dependency of halo concentration on mass, redshift and fossilness in Magneticum hydrodynamic simulations
• A Council of Giants
• Like a spider in its web: a study of the Large Scale Structure around the Coma cluster
• The Young and the Wild: What happens to Protoclusters forming at z = 4?
• Cosmic Structure and Dynamics of the Local Universe
• Cosmology dependency of halo masses and concentrations in hydrodynamic simulations
• Minimization of Biases in Galaxy Peculiar Velocity Catalogs
• Enrichment of the hot intracluster medium: numerical simulations
• SIBELIUS-DARK: a galaxy catalogue of the Local Volume from a constrained realisation simulation
• Introducing BAX: a database for X-ray clusters and groups of galaxies
• Planck intermediate results. XL. The Sunyaev-Zeldovich signal from the Virgo cluster
• Radial profile and log-normal fluctuations of intra-cluster medium as an origin of systematic bias of spectroscopic temperature
• How did the Virgo cluster form?
• The eROSITA view of the Abell 3391/95 field: a case study from the Magneticum cosmological simulation
• Reconstructing cosmological initial conditions from galaxy peculiar velocities. III. Constrained simulations
• Stellar and dark matter density in the Local Universe
• CRESCENDO: An on-the-fly Fokker-Planck Solver for Spectral Cosmic Rays in Cosmological Simulations
• Reconstructing cosmological initial conditions from galaxy peculiar velocities. II. The effect of observational errors
• Galaxy clusters in local Universe simulations without density constraints: a long uphill struggle
• Galaxy clusters in simulations of the local Universe: a matter of constraints
• Massive quiescent galaxies at $z\sim 3$: a comparison of selection, stellar population and structural properties with simulation predictions
• Rise and fall of post-starburst galaxies in Magneticum Pathfinder
• I- A hydrodynamical CLONE of the Virgo cluster of galaxies to confirm observationally-driven formation scenarios
• An alternative validation strategy for the Planck cluster catalog and $y$-distortion maps
• Toward an Optimal Sampling of Peculiar Velocity Surveys For Wiener Filter Reconstructions
• How does the grouping scheme affect the Wiener Filter reconstruction of the local Universe?
• Reionization of the Milky Way, M31, and their satellites I: reionization history and star formation
• The cosmic web around the Coma cluster from constrained cosmological simulations: I. Filaments connected to Coma at $z=0$
• The Extended Local Supercluster
• Merger types forming the Virgo cluster in recent gigayears
• The Cosmic Large-Scale Structure in X-rays (CLASSIX) cluster survey IV: Superclusters in the local Universe at z <= 0.03
• Reionization time of the Local Group and Local-Group-like halo pairs
• The Cosmic Large-Scale Structure in X-rays (CLASSIX) Cluster Survey II: Unveiling a pancake structure with a 100 Mpc radius in the local Universe
• The Past History of Galaxy Clusters told by their present neighbors
• Testing the SZ-based tomographic approach to the thermal history of the universe with pressure-density cross-correlations: Insights from the Magneticum simulation
• Efficiently estimating mean, uncertainty and unconstrained large scale fraction of local Universe simulations with paired fixed fields

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• Unveiling the largest structures in the nearby Universe: Discovery of the Quipu superstructure
• Discovery of a >13 Mpc long X-ray filament between two galaxy clusters beyond three times their virial radii
• Can the splashback radius be an observable boundary of galaxy clusters?
• Simulating the LOcal Web (SLOW) -- III: Synchrotron emission from the local cosmic web
• Revisiting the large-scale CMB anomalies: The impact of the SZ signal from the Local Universe
• Intra-Cluster Light as a Dynamical Clock for Galaxy Clusters: Insights from the MAGNETICUM, IllustrisTNG, Hydrangea and Horizon-AGN Simulations
• The SRG/eROSITA all-sky survey: View of the Fornax galaxy cluster
• Evaluating the variance of individual halo properties in constrained cosmological simulations
• The Glow of Axion Quark Nugget Dark Matter: (II) Galaxy Clusters
• Redshift drift in a universe with structure III: Numerical relativity
• Introducing cosmosTNG: simulating galaxy formation with constrained realizations of the COSMOS field
• Galaxy Superclusters and Their Complexes in the Cosmic Web
• Physical Processes Behind the Co-Evolution of Halos, Galaxies and Supermassive Black Holes in the IllustrisTNG Simulation
• Turbulence in Simulated Local Cluster Analogs: One-to-one comparisons between SLOW and XRISM/Hitomi
• Magnetic Fields in the Shapley Supercluster Core with POSSUM: Challenging Model Predictions
• Ginnungagap -- a massively parallel cosmological initial conditions generator
• The Manticore Project II: Bayesian digital twins of cosmic structure across the SDSS and BOSS volumes