Dark matter halo abundances, clustering and assembly histories at high redshift

Abstract

We use a suite of high-resolution N-body simulations to study the properties, abundance and clustering of high mass halos at high redshift, including their mass assembly histories and mergers. We find that the analytic form which best fits the abundance of halos depends sensitively on the assumed definition of halo mass, with common definitions of halo mass differing by a factor of two for these low concentration, massive halos. A significant number of massive halos are undergoing rapid mass accretion, with major merger activity being common. We compare the mergers and mass accretion histories to the extended Press-Schechter formalism. We consider how major merger induced star formation or black hole accretion may change the distribution of photon production from collapsed halos, and hence reionization, using some simplified examples. In all of these, the photon distribution for a halo of a given mass acquires a large scatter. If rare, high mass halos contribute significantly to the photon production rates, the scatter in photon production rate can translate into additional scatter in the sizes of ionized bubbles.

arXiv comment9 pages, 9 figures, resubmitted to MNRAS, added some references and convergence tests to better constrain bias

References in corpus (75)

• A Universal Density Profile from Hierarchical Clustering
• Simulating the joint evolution of quasars, galaxies and their large-scale distribution
• Large scale bias and the peak background split
• Profiles of dark haloes: evolution, scatter, and environment
• Ellipsoidal collapse and an improved model for the number and spatial distribution of dark matter haloes
• Gasdynamics and Starbursts in Major Mergers
• Mass function of dark matter halos
• An analytic model for the spatial clustering of dark matter haloes
• Cosmology at Low Frequencies: The 21 cm Transition and the High-Redshift Universe
• In the Beginning: The First Sources of Light and the Reionization of the Universe
• The Dependence of Star Formation History and Internal Structure on Stellar Mass for 10^5 Low-Redshift Galaxies
• Concentrations of Dark Halos from their Assembly Histories
• A Unified Model for the Evolution of Galaxies and Quasars
• Observational constraints on Cosmic Reionization
• Merger rates in hierarchical models of galaxy formation. II: Comparison with N-body simulations
• The Growth of HII Regions During Reionization
• The Structure of Dark Matter Haloes in Hierarchical Clustering Models
• Precision Determination of the Mass Function of Dark Matter Halos
• Sample Variance Considerations for Cluster Surveys
• Efficient Simulations of Early Structure Formation and Reionization
• On the Mass-to-Light Ratio of Large Scale Structure
• Clustering of High Redshift ($z\ge 2.9$) Quasars from the Sloan Digital Sky Survey
• Cosmological Reionization by Stellar Sources
• The halo mass function from the dark ages through the present day
• Simulating Cosmic Reionization at Large Scales I: the Geometry of Reionization
• The morphology of HII regions during reionization
• Simulations and Analytic Calculations of Bubble Growth During Hydrogen Reionization
• Early reionization by miniquasars
• Reionization of Hydrogen and Helium by Early Stars and Quasars
• Natural Downsizing in Hierarchical Galaxy Formation
• The Excursion Set Theory of Halo Mass Functions, Halo Clustering, and Halo Growth
• Radiative transfer simulations of cosmic reionization I: methodology and initial results
• The Halo Mass Function: High-Redshift Evolution and Universality
• Evolution of the Mass Function of Dark Matter Haloes
• Cosmological Radiative Transfer Codes Comparison Project I: The Static Density Field Tests
• Statistics of Physical Properties of Dark Matter Clusters
• Taxing the Rich: Recombinations and Bubble Growth During Reionization
• Simulating Cosmic Reionization at Large Scales II: the 21-cm Emission Features and Statistical Signals
• Early and Rapid Merging as a Formation Mechanism of Massive Galaxies: Empirical Constraints
• The mass of a halo
• The detectability of baryonic acoustic oscillations in future galaxy surveys
• Large scale bias and stochasticity of halos and dark matter
• Simulating the Sunyaev-Zel'dovich effect(s): including radiative cooling and energy injection by galactic winds
• Cosmic Reionisation by Stellar Sources: Population III Stars
• Cosmic Reionisation by Stellar Sources: Population II Stars
• Minihalo photoevaporation during cosmic reionization: evaporation times and photon consumption rates
• The Era of Massive Population III Stars: Cosmological Implications and Self-Termination
• Simulating IGM Reionization
• Biasing and the distribution of dark matter haloes
• The Fall of the Quasar Population
• Environmental Dependence of Cold Dark Matter Halo Formation
• The Clustering of Massive Halos
• On The Assembly History of Dark Matter Haloes
• The Assembly of Matter in Galaxy Clusters
• The Ultimate Halo Mass in a LCDM Universe
• Evaluating Semi-Analytic Halo Merging Histories
• On the Distribution of Haloes, Galaxies and Mass
• Self-Consistent Theory of Halo Mergers
• First Structure Formation: A Simulation of Small Scale Structure at High Redshift
• The Epoch of Reionization
• Non-uniform reionization by galaxies and its effect on the cosmic microwave backgroun
• The First Generation of Star-Forming Haloes
• The Formation Histories of Galaxy Clusters
• Large-Scale Simulations of Reionization
• Damped Lyman alpha systems and disk galaxies: number density, column density distribution and gas density
• Spatial distribution of galactic halos and their merger histories
• Early structure formation in quintessence models and its implications for cosmic reionisation from first stars
• Capturing Halos at High Redshifts
• On the Spatial Correlations of Lyman Break Galaxies
• A Comparison of Simulated and Analytic Major Merger Counts
• An analytic model for the epoch of halo creation
• On Correlated Random Walks and 21-cm Fluctuations During Cosmic Reionization
• The build-up of halos within Press-Schechter theory
• The Cosmological History of Accretion onto Dark Halos and Supermassive Black Holes
• Source Mergers and Bubble Growth During Reionization

Cited by in corpus (54)

• Toward a halo mass function for precision cosmology: the limits of universality
• The Large Scale Bias of Dark Matter Halos: Numerical Calibration and Model Tests
• Halos and galaxies in the standard cosmological model: results from the Bolshoi simulation
• Resolving Cosmic Structure Formation with the Millennium-II Simulation
• Formation of Galaxy Clusters
• Haloes gone MAD: The Halo-Finder Comparison Project
• The Observed Growth of Massive Galaxy Clusters I: Statistical Methods and Cosmological Constraints
• The halo mass function through the cosmic ages
• Halo Assembly Bias in Hierarchical Structure Formation
• Merger Histories of Galaxy Halos and Implications for Disk Survival
• On the Cluster Physics of Sunyaev-Zel'dovich Surveys II: Deconstructing the Thermal SZ Power Spectrum
• Halo mass function and scale-dependent bias from N-body simulations with non-Gaussian initial conditions
• Simulating the Universe with MICE: The abundance of massive clusters
• Mass Function Predictions Beyond LCDM
• The overdensity and masses of the friends-of-friends halos and universality of the halo mass function
• The growth of dark matter halos: evidence for significant smooth accretion
• The FABLE simulations: A feedback model for galaxies, groups and clusters
• The Mira-Titan Universe: Precision Predictions for Dark Energy Surveys
• Imprint of Inhomogeneous Hydrogen Reionization on the Temperature Distribution of the Intergalactic Medium
• The effects of baryons on the halo mass function
• Cross-Correlation of SDSS DR7 Quasars and DR10 BOSS Galaxies: The Weak Luminosity Dependence of Quasar Clustering at z~0.5
• On the radiative efficiencies, Eddington ratios, and duty cycles of luminous high-redshift quasars
• The effect of AGN feedback on the halo mass function
• Collapse Barriers and Halo Abundance: Testing the Excursion Set Ansatz
• Can 21-cm observations discriminate between high-mass and low-mass galaxies as reionization sources?
• SCORCH I: The Galaxy-Halo Connection in the First Billion Years
• Simulating Subhalos at High Redshift: Merger Rates, Counts, and Types
• Constraints on the correlation between QSO luminosity and host halo mass from high-redshift quasar clustering
• Cosmological HII Bubble Growth During Reionization
• The Observed Growth of Massive Galaxy Clusters III: Testing General Relativity on Cosmological Scales
• Large-Scale Structure Formation: from the first non-linear objects to massive galaxy clusters
• Interpreting the Clustering of Distant Red Galaxies
• High-redshift JWST Observations and Primordial Non-Gaussianity
• A high precision semi-analytic mass function
• The Q Continuum Simulation: Harnessing the Power of GPU Accelerated Supercomputers
• The Impact of Theoretical Uncertainties in the Halo Mass Function and Halo Bias on Precision Cosmology
• The halo mass function in interacting Dark Energy models
• PICS: Simulations of Strong Gravitational Lensing in Galaxy Clusters
• BIRTH of the COSMOS Field: Primordial and Evolved Density Reconstructions During Cosmic High Noon
• Probing the first galaxies with the SKA
• The clustering of the first galaxy halos
• Some assembly required: assembly bias in massive dark matter halos
• Synergies between radio, optical and microwave observations at high redshift
• The halo mass function conditioned on density from the Millennium Simulation: insights into missing baryons and galaxy mass functions
• The abundance of dark matter haloes down to Earth mass
• The impact of systematic uncertainties in N-body simulations on the precision cosmology from galaxy clustering: a halo model approach
• The importance of secondary halos for strong lensing in massive galaxy clusters across redshift
• Future sensitivity of neutrino telescopes to dark matter annihilations from the cosmic diffuse neutrino signal
• The environment and redshift dependence of accretion onto dark matter halos and subhalos
• Isotropic extragalactic flux from dark matter annihilations: lessons from interacting dark matter scenarios
• Gas around galaxy haloes: methodology comparisons using hydrodynamical simulations of the intergalactic medium
• Questioning Planck-selected star-forming high-redshift galaxy protoclusters and their fate
• The cusp-halo relation
• Aemulus $\nu$: Precision halo mass functions in w$\nu$CDM cosmologies