Reionization and Cosmology with 21 cm Fluctuations

Abstract

Measurement of the spatial distribution of neutral hydrogen via the redshifted 21 cm line promises to revolutionize our knowledge of the epoch of reionization and the first galaxies, and may provide a powerful new tool for observational cosmology from redshifts 1<z<4 . In this review we discuss recent advances in our theoretical understanding of the epoch of reionization (EoR), the application of 21 cm tomography to cosmology and measurements of the dark energy equation of state after reionization, and the instrumentation and observational techniques shared by 21 cm EoR and post reionization cosmology machines. We place particular emphasis on the expected signal and observational capabilities of first generation 21 cm fluctuation instruments.

Invited review for Annual Review of Astronomy and Astrophysics (2010 volume)

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• Bayesian Multi-line Intensity Mapping
• Can EDGES observation favour any dark matter model?
• Altitude Estimation of Radio Frequency Interference Sources via Interferometric Near Field Corrections
• A Differentiable, End-to-End Forward Model for 21 cm Cosmology: Estimating the Foreground, Instrument, and Signal Joint Posterior
• Foreground and sensitivity analysis for broad band (2D) 21cm--Ly-alpha and 21cm--H-alpha correlation experiments probing the Epoch of Reionization
• A Method to Extract the Angular Power Spectrum of the Epoch of Reionization from Low-Frequency Radio Interferometers
• Statistical estimation of full-sky radio maps from 21cm array visibility data using Gaussian constrained realizations
• Energy injection in pre-recombination era and EDGES detection
• Automated Detection of Antenna Malfunctions in Large-N Interferometers: A Case Study with the Hydrogen Epoch of Reionization Array
• Characterizing Beam Errors for Radio Interferometric Observations of Reionization
• Comparing sampling techniques to chart parameter space of 21 cm Global signal with Artificial Neural Networks
• Lyman-alpha Heating of Inhomogeneous High-redshift Intergalactic Medium
• Maximum likelihood analysis of systematic errors in interferometric observations of the cosmic microwave background
• Influence of synchrotron self-absorption on the 21cm experiments
• The Impact of ionization Morphology and X-ray Heating on the Cosmological 21cm Skew Spectrum
• Improvements to the Search for Cosmic Dawn Using the Long Wavelength Array
• The Chemistry of the Early Universe
• Intensity Mapping with the 21-cm and Lyman Alpha Lines
• Bayesian jackknife tests with a small number of subsets: Application to HERA 21cm power spectrum upper limits
• Constraining a Model of the Radio Sky Below 6 MHz Using the Parker Solar Probe/FIELDS Instrument in Preparation for Upcoming Lunar-based Experiments
• Probing the physics and history of cosmic reionization with the Sunyaev-Zel'dovich Effect
• The Statistics of Negative Power Spectrum Systematics in some 21 cm Analyses
• 21 cm Intensity Mapping with the DSA-2000
• Reconstructing the epoch of reionisation with Planck PR4
• Analyzing the 21-cm signal brightness temperature in the Universe with inhomogeneities
• Cross-correlation of the Polarizations of the 21-cm and Cosmic Microwave Backgrounds
• HI Intensity Mapping with the MIGHTEE Survey: First Results of the HI Power Spectrum
• Field-level Reconstruction from Foreground-Contaminated 21-cm Maps
• Detecting 21 cm EoR Signal using Drift Scans: Correlation of Time-ordered Visibilities
• Standard Model Prediction for Cosmological 21cm Circular Polarization
• Cosmic Bandits: Exploration versus Exploitation in CMB B-Mode Experiments
• Detecting Cosmic 21 cm Global Signal Using an Improved Polynomial Fitting Algorithm
• Impact of Calibration and Position Errors on Astrophysical Parameters of the HI 21cm Signal
• Reionization Parameter Inference from 3D Minkowski Functionals of the 21 cm Signals
• Fisher matrix forecasts on the astrophysics of galaxies during the epoch of reionisation from the 21-cm power spectra
• 21 cm Signal from the Thermal Evolution of Lyman-$\alpha$ during Cosmic Dawn
• An Alcock-Paczynski Test on Reionization Bubbles for Cosmology
• Calibration requirement for Epoch of Reionization 21-cm signal observation -- III. Bias and variance in uGMRT ELAIS-N1 field power spectrum
• Observable predictions of generalised inflationary scenarios
• oLIMpus: An Effective Model for Line Intensity Mapping Auto- and Cross- Power Spectra in Cosmic Dawn and Reionization
• Sensitivity toward dark matter annihilation imprints on 21-cm signal with SKA-Low: A convolutional neural network approach
• Predicting the intensity mapping signal for multi-$J$ CO lines
• The prospects of measuring the angular power spectrum of the diffuse Galactic synchrotron emission with SKA1 Low
• Star Formation for Predictive Primordial Galaxy Formation
• Epoch of Reionization Power Spectrum Limits from Murchison Widefield Array Data Targeted at EoR1 Field
• Mapping our Universe in 3D with MITEoR
• Foreground removal and angular power spectrum estimation of 21 cm signal using harmonic space ILC method
• Modified Cosmology or Modified Galaxy Astrophysics is Driving the z>6 JWST Results? CMB Experiments can discover the Origin in the Near Future
• CDM and Baryons as Distinct Fluids in a Linear Approximation for the Growth of Structure
• Beamforming approaches toward detecting the 21-cm global signal from Cosmic Dawn with radio array telescopes
• Thermal Evolution of the IGM due to Lyman-α photons during the Cosmic Dawn
• Fisher Matrix Optimization of Cosmic Microwave Background Interferometers
• Measuring CMB non-Gaussianity as a probe of Inflation and Cosmic Strings
• Comparison of Fast, Hybrid Imaging Architectures for Multi-scale, Hierarchical Aperture Arrays
• Observing the influence of growing black holes on the pre-reionization IGM
• Radiative transfer of 21-cm line through ionised cavities in an expanding universe
• Streaming Velocity Effects on the Post-reionization 21 cm Baryon Acoustic Oscillation Signal
• Imaging and Modeling Data from the Hydrogen Epoch of Reionization Array
• Seeing Wiggles without Seeing Wiggles: BAO Recovery in 21 cm Intensity Mapping with Deep Learning
• SNIFFLES I: Intended Emission, Unwanted Emission, and Unintended Radiation from Low-Earth Orbiting Satellites Impacting Radio Astronomy from 1-26 GHz
• Operational Non-identifiability of Single-epoch Low-rank RFI Mitigation: Controlled Failure-mode Analysis and HERA Evidence
• Probing the warm dark matter mass with [C II] intensity mapping
• Direction-Dependent Polarised Primary Beams in Wide-Field Synthesis Imaging
• Probing the Inflaton Potential with SKA
• Exploring the Model Dependence of MCMC-Based 21 cm Power Spectrum Parameter Constraints
• Uncertainty-Aware Neural Networks for Fuzzy Dark Matter Model Selection from \texorpdfstring{$x_{\mathrm{HI}}$}{x_HI} Measurements
• The MWA Long Baseline Epoch of Reionisation Survey: I. Improved Source Catalogue for the EoR 0 field
• The Correlation Calibration of PAPER-64 data
• Imaging the Southern Sky at 159MHz using Spherical Harmonics with the Engineering Development Array 2
• The DORCHA suite: nature, nurture, and the phase space distribution of the Milky Way's high redshift progenitors today
• Constraints on the velocity dispersion of Dark Matter from Cosmology and new bounds on scattering from the Cosmic Dawn