Reionization on Large Scales I: A Parametric Model Constructed from Radiation-Hydrodynamic Simulations

Abstract

We present a new method for modeling inhomogeneous cosmic reionization on large scales. Utilizing high-resolution radiation-hydrodynamic simulations with 2048^3 dark matter particles, 2048^3 gas cells, and 17 billion adaptive rays in a L = 100 Mpc/h box, we show that the density and reionization-redshift fields are highly correlated on large scales (>~ 1 Mpc/h). This correlation can be statistically represented by a scale-dependent linear bias. We construct a parametric function for the bias, which is then used to filter any large-scale density field to derive the corresponding spatially varying reionization-redshift field. The parametric model has three free parameters which can be reduced to one free parameter when we fit the two bias parameters to simulations results. We can differentiate degenerate combinations of the bias parameters by combining results for the global ionization histories and correlation length between ionized regions. Unlike previous semi-analytic models, the evolution of the reionization-redshift field in our model is directly compared cell by cell against simulations and preforms well in all tests. Our model maps the high-resolution, intermediate-volume radiation-hydrodynamic simulations onto lower-resolution, larger-volume N-body simulations (>~ 2 Gpc/h) in order to make mock observations and theoretical predictions.

10 pages, 10 figures, submitted to ApJ, comments welcome

References in corpus (17)

• Efficient Simulations of Early Structure Formation and Reionization
• The morphology of HII regions during reionization
• Reionization and the Cosmic Dawn with the Square Kilometre Array
• Radiative transfer simulations of cosmic reionization I: methodology and initial results
• Simulating Cosmic Reionization at Large Scales II: the 21-cm Emission Features and Statistical Signals
• Inside-out or Outside-in: The topology of reionization in the photon-starved regime suggested by Lyman-alpha forest data
• A radiative transfer scheme for cosmological reionization based on a local Eddington tensor
• Imprint of Inhomogeneous Hydrogen Reionization on the Temperature Distribution of the Intergalactic Medium
• Detecting the Rise and Fall of the First Stars by Their Impact on Cosmic Reionization
• Power spectrum extraction for redshifted 21-cm epoch of reionization experiments: the LOFAR case
• Fast Large-Scale Reionization Simulations
• An implementation of radiative transfer in the cosmological simulation code GADGET
• SPHRAY: A Smoothed Particle Hydrodynamics Ray Tracer for Radiative Transfer
• Connecting Reionization to the Local Universe
• A New Moment Method for Continuum Radiative Transfer in Cosmological Reionization
• Radiation-induced large-scale structure during the reionization epoch: the autocorrelation function
• Growth and anisotropy of ionization fronts near high redshift quasars in the MassiveBlack simulation

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