Multifrequency analysis of 21 cm fluctuations from the Era of Reionization

Abstract

We study the prospects for extracting detailed statistical properties of the neutral Hydrogen distribution during the era of reionization using the brightness temperature fluctuations from redshifted 21 cm line emission. Detection of this signal is complicated by contamination from foreground sources such as diffuse Galactic synchrotron and free-free emission at low radio frequencies, extragalactic free-free emission from ionized regions and radio point sources. We model these foregrounds to determine the extent to which 21 cm fluctuations can be detected with upcoming experiments. We find that not only the level of correlation from one frequency to another, but also the functional form of the foreground correlations has a substantial impact on foreground removal. We calculate how well the angular power spectra of the 21cm fluctuations can be determined. We also show that the large-scale bias of the neutral Hydrogen gas distribution with respect to the density field, can be determined with high precision and used to distinguish between different reionization histories.

arXiv comment14 pages, 14 figures. New version to match paper accepted for publication in ApJ. The frequency cross-correlations of the signal are now smaller. Main conclusions of the paper remain unchanged

References in corpus (49)

• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Determination of Cosmological Parameters
• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Preliminary Maps and Basic Results
• Halo Models of Large Scale Structure
• Karhunen-Loeve eigenvalue problems in cosmology: how should we tackle large data sets?
• Evidence for Reionization at z ~ 6: Detection of a Gunn-Peterson Trough in a z=6.28 Quasar
• Wilkinson Microwave Anisotropy Probe (WMAP) First Year Observations: TE Polarization
• 21-cm Tomography of the Intergalactic Medium at High Redshift
• Effect of Reionization on the Structure Formation in the Universe
• The Growth of HII Regions During Reionization
• Reionization of the Universe and the Early Production of Metals
• Evolution of the Ionizing Background and the Epoch of Reionization from the Spectra of z~6 Quasars
• Reionization of the Inhomogeneous Universe
• 21 Centimeter Fluctuations from Cosmic Gas at High Redshifts
• Foregrounds and Forecasts for the Cosmic Microwave Background
• The Universe Was Reionized Twice
• The Spin-Kinetic Temperature Coupling and the Heating Rate due to Lyman Alpha Scattering before Reionization: Predictions for 21cm Emission and Absorption
• Radio Signatures of HI at High Redshift: Mapping the End of the ``Dark Ages''
• Toward Epoch of Reionization Measurements with Wide-Field Radio Observations
• The Angular Clustering of Lyman-Break Galaxies at Redshift z=3
• Fossil HII Regions: Self-Limiting Star Formation at High Redshift
• An analytical model for the history of cosmic star formation
• The Reionization History at High Redshifts I: Physical Models and New Constraints from CMB Polarization
• Radio Foregrounds for the 21cm Tomography of the Neutral Intergalactic Medium at High Redshifts
• Statistical Probes of Reionization With 21 cm Tomography
• Polarization of the Microwave Background in Reionized Models
• Heating and Ionization of the Intergalactic Medium by an Early X-Ray Background
• On using visibility correlations to probe the HI distribution from the dark ages to the present epoch I: Formalism and the expected signal
• Cosmic Reionisation by Stellar Sources: Population II Stars
• On the Direct Detectability of the Cosmic Dark Ages: 21-cm Emission from Minihalos
• Was the Universe Reionized by Massive Population-III Stars?
• Probing the Reionization History of the Universe using the Cosmic Microwave Background Polarization
• Interferometric Observation of Cosmic Microwave Background Anisotropies
• Small-scale CMB Temperature and Polarization Anisotropies due to Patchy Reionization
• Power Spectrum Sensitivity and the Design of Epoch of Reionization Observatories
• Redshifted 21 cm Emission From the Pre-Reionization Era I. Mean Signal and Linear Fluctuations
• A Determination of the Spectral Index of Galactic Synchrotron Emission in the 1-10 GHz range
• The 21 centimeter emission from the reionization epoch: extended and point source foregrounds
• Photon Consumption in Minihalos during Cosmological Reionization
• Model-Independent Reionization Observables in the CMB
• Evolution of the Ionizing Radiation Background and Star Formation in the Aftermath of Cosmological Reionization
• Galactic emission at 19 GHz
• Non-uniform reionization by galaxies and its effect on the cosmic microwave backgroun
• Reionization, SLOAN, and WMAP: is the Picture Consistent?
• Observational Signatures of the First Luminous Objects
• Removing real-world foregrounds from CMB maps
• Multiple Methods for Estimating the Bispectrum of the Cosmic Microwave Background with Application to the MAXIMA Data
• A Deep, High-Resolution Survey at 74 MHz
• Free-Free Emission at Low Radio Frequencies
• Can Non-Gaussian Cosmological Models Explain the WMAP's High Optical Depth for Reionization?

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