ar X iv : a st ro - p h / 04 09 20 5 v 2 2 2 Se p 20 04 21 cm Tomography of the High - Redshift Universe with the Square Kilometer Array


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… (More)


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