HI 21cm probes of reionization, and beyond

Abstract

I review the potential for observing cosmic reionization using the HI 21cm line of neutral hydrogren. Studies include observations of the evolution of large scale structure of the IGM (density, excitation temperature, and neutral fraction), through HI 21cm emission, as well as observations of small to intermediate scale structure through absorption toward the first discrete radio sources. I summarize predictions for the HI signals, then consider capabilities of facilities being built, or planned, to detect these signals. I also discuss the significant observational challenges.

"First light and reionization," New Astronomy Reviews, eds. A. Cooray & E. Barton; 20 pages, elsart12.sty, fixed typo

References in corpus (20)

• Multifrequency analysis of 21 cm fluctuations from the Era of Reionization
• Detecting the Earliest Galaxies Through Two New Sources of 21cm Fluctuations
• A Method for Separating the Physics from the Astrophysics of High-Redshift 21cm Fluctuations
• On using visibility correlations to probe the HI distribution from the dark ages to the present epoch I: Formalism and the expected signal
• Power Spectrum Sensitivity and the Design of Epoch of Reionization Observatories
• Evidence for a Cosmological Stromgren Surface and for Significant Neutral Hydrogen Surrounding the Quasar SDSS J1030+0524
• A Size of ~10 Mpc for the Ionized Bubbles at the End of Cosmic Reionization
• Nonlinear clustering during the cosmic Dark Ages and its effect on the 21-cm background from minihalos
• Improved Constraints on The Neutral Intergalactic Hydrogen Surrounding Quasars at Redshifts z>6
• The accretion history of the Universe with the SKA
• How Universal is the Gunn-Peterson Trough at z~6?: A Closer Look at the Quasar SDSS J1148+5251
• HI Signal from Reionization Epoch
• Radio Afterglows of Gamma-Ray Bursts and Hypernovae at High Redshift, and their Potential for 21-cm Absorption Studies
• Structure in the polarized Galactic synchrotron emission, in particular `depolarization canals'
• Reionization History from Coupled CMB/21cm Line Data
• 21 cm Tomography of the High-Redshift Universe with the Square Kilometer Array
• Observations of HI 21cm absorption by the neutral IGM during the epoch of re-ionization with the Square Kilometer Array
• The spin temperature of neutral hydrogen during cosmic pre-reionization
• Redshifted 21 cm Emission From the Pre-Reionization Era II. HII Regions Around Individual Quasars
• Polarization Signals of the 21 cm Background from the Era of Reionization

Cited by in corpus (12)

• Observational constraints on Cosmic Reionization
• Distant Radio Galaxies and their Environments
• The multi-frequency angular power spectrum of the epoch of reionization 21 cm signal
• Lyman-alpha radiative transfer during the Epoch of Reionization: contribution to 21-cm signal fluctuations
• The Outer Disk of the Milky Way Seen in 21-cm Absorption
• Redshift space 21 cm power spectra from reionization
• Detecting the redshifted 21cm forest during reionization
• A search for HI 21cm absorption toward the highest redshift radio loud objects
• Particle decay in the early universe: predictions for 21 cm
• Detection and Fundamental Applications of Individual First Galaxies
• Cospatial 21 cm and metal-line absorbers in the epoch of reionization -- I : Incidence and observability
• Probing Cosmological Reionization through Radio-interferometric Observations of Neutral Hydrogen