Two-dimensional Topology of Cosmological Reionization

Abstract

We study the two-dimensional topology of the 21-cm differential brightness temperature for two hydrodynamic radiative transfer simulations and two semi-numerical models. In each model, we calculate the two dimensional genus curve for the early, middle and late epochs of reionization. It is found that the genus curve depends strongly on the ionized fraction of hydrogen in each model. The genus curves are significantly different for different reionization scenarios even when the ionized faction is the same. We find that the two-dimensional topology analysis method is a useful tool to constrain the reionization models. Our method can be applied to the future observations such as those of the Square Kilometer Array.

11 pages, 7 figures, 1 table, Accepted for publication in ApJ

References in corpus (20)

• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Likelihoods and Parameters from the WMAP data
• Cosmology at Low Frequencies: The 21 cm Transition and the High-Redshift Universe
• Observational constraints on Cosmic Reionization
• Efficient Simulations of Early Structure Formation and Reionization
• Radiative transfer simulations of cosmic reionization I: methodology and initial results
• A measurement of secondary cosmic microwave background anisotropies from the 2500-square-degree SPT-SZ survey
• A Method for 21cm Power Spectrum Estimation in the Presence of Foregrounds
• The 21cm angular-power spectrum from the dark ages
• Imprint of Inhomogeneous Hydrogen Reionization on the Temperature Distribution of the Intergalactic Medium
• Multi-redshift limits on the 21cm power spectrum from PAPER
• Searching for the reionization sources
• Topology of structure in the Sloan Digital Sky Survey: model testing
• The Topology of Cosmological Reionization
• Topology of Neutral Hydrogen Within the Small Magellanic Cloud
• Probing the Epoch of Reionization with the Lyman Alpha Forest at z~4-5
• A Linear Perturbation Theory of Inhomogeneous Reionization
• Topology of HI in the Large Magellanic Cloud
• Topology of large-scale structure in the 2dF Galaxy Redshift Survey
• Probing reionization with the cross power spectrum of 21 cm and near-infrared radiation backgrounds
• Observational Limits on Patchy Reionization: Implications for B-modes

Cited by in corpus (13)

• Reionization Through the Lens of Percolation Theory
• Studying topological structure in the epoch of reionization with 3D-Minkowski functionals of 21cm line fluctuations
• Stages of Reionization as revealed by the Minkowski Functionals
• Prospects of constraining reionization model parameters using Minkowski tensors and Betti numbers
• Morphology of 21cm brightness temperature during the Epoch of Reioinization using Contour Minkowski Tensor
• A novel probe of bubble size statistics and time scales of the epoch of reionization using the contour Minkowski Tensor
• Weakly non-Gaussian formula for the Minkowski functionals in general dimensions
• Cosmological Parameter Estimation Using the Genus Amplitude - Application to Mock Galaxy Catalogs
• Deep-Learning Study of the 21cm Differential Brightness Temperature During the Epoch of Reionization
• MEDUSA: Minkowski functionals estimated from Delaunay tessellations of the three-dimensional large-scale structure
• Topology of Large-Scale Structures of Galaxies in Two Dimensions - Systematic Effects
• Small-scale Effects of Thermal Inflation on Halo Abundance at High-$z$, Galaxy Substructure Abundance and 21-cm Power Spectrum
• Reionization Parameter Inference from 3D Minkowski Functionals of the 21 cm Signals