HI 21cm probes of reionization, and beyond

Details HI 21cm probes of reionization, and beyond HI 21cm probes of reionization, and beyond

2005-09-02

arxiv.org/abs/astro-ph/0509055v1

New Astron.Rev.50:162-172,2006

Astronomy and Astrophysics

Astrophysics

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

Scientific paper

10.1016/j.newar.2005.11.031

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.

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