21 cm tomography of the high-redshift universe with the Square Kilometer Array

S. R. Furlanetto; F. H. Briggs

doi:10.1016/j.newar.2004.09.034

21 cm tomography of the high-redshift universe with the Square Kilometer Array

S. R. Furlanetto^*, F. H. Briggs

^*Corresponding author for this work

Research output: Contribution to journal › Short survey › peer-review

31 Citations (Scopus)

Abstract

We discuss the prospects for "tomography" of the intergalactic medium (IGM) at high redshifts using the 21 cm transition of neutral hydrogen. Existing observational constraints on the epoch of reionization imply a complex ionization history that may require multiple generations of sources. The 21 cm transition provides a unique tool to probe this era in detail, because it does not suffer from saturation effects, retains full redshift information, and directly probes the IGM gas. Observations in the redshifted 21 cm line will allow one to study the history and morphology of reionization in detail. Depending on the characteristics of the first sources, they may also allow us to probe the era before reionization, when the first structures and luminous sources were forming. The construction of high signal-to-noise ratio maps on arcmin scales will require approximately one square kilometer of collecting area.

Original language	English
Pages (from-to)	1039-1052
Number of pages	14
Journal	New Astronomy Reviews
Volume	48
Issue number	11-12
DOIs	https://doi.org/10.1016/j.newar.2004.09.034
Publication status	Published - Dec 2004

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title = "21 cm tomography of the high-redshift universe with the Square Kilometer Array",

abstract = "We discuss the prospects for {"}tomography{"} of the intergalactic medium (IGM) at high redshifts using the 21 cm transition of neutral hydrogen. Existing observational constraints on the epoch of reionization imply a complex ionization history that may require multiple generations of sources. The 21 cm transition provides a unique tool to probe this era in detail, because it does not suffer from saturation effects, retains full redshift information, and directly probes the IGM gas. Observations in the redshifted 21 cm line will allow one to study the history and morphology of reionization in detail. Depending on the characteristics of the first sources, they may also allow us to probe the era before reionization, when the first structures and luminous sources were forming. The construction of high signal-to-noise ratio maps on arcmin scales will require approximately one square kilometer of collecting area.",

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AU - Furlanetto, S. R.

AU - Briggs, F. H.

PY - 2004/12

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N2 - We discuss the prospects for "tomography" of the intergalactic medium (IGM) at high redshifts using the 21 cm transition of neutral hydrogen. Existing observational constraints on the epoch of reionization imply a complex ionization history that may require multiple generations of sources. The 21 cm transition provides a unique tool to probe this era in detail, because it does not suffer from saturation effects, retains full redshift information, and directly probes the IGM gas. Observations in the redshifted 21 cm line will allow one to study the history and morphology of reionization in detail. Depending on the characteristics of the first sources, they may also allow us to probe the era before reionization, when the first structures and luminous sources were forming. The construction of high signal-to-noise ratio maps on arcmin scales will require approximately one square kilometer of collecting area.

AB - We discuss the prospects for "tomography" of the intergalactic medium (IGM) at high redshifts using the 21 cm transition of neutral hydrogen. Existing observational constraints on the epoch of reionization imply a complex ionization history that may require multiple generations of sources. The 21 cm transition provides a unique tool to probe this era in detail, because it does not suffer from saturation effects, retains full redshift information, and directly probes the IGM gas. Observations in the redshifted 21 cm line will allow one to study the history and morphology of reionization in detail. Depending on the characteristics of the first sources, they may also allow us to probe the era before reionization, when the first structures and luminous sources were forming. The construction of high signal-to-noise ratio maps on arcmin scales will require approximately one square kilometer of collecting area.

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DO - 10.1016/j.newar.2004.09.034

M3 - Short survey

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SP - 1039

EP - 1052

JO - New Astronomy Reviews

JF - New Astronomy Reviews

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ER -

21 cm tomography of the high-redshift universe with the Square Kilometer Array

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