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HI 21cm probes of reionization, and beyond | | C.L. Carilli
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2 Sep 2005 | | Subject: | astro-ph | | Affiliation: | NRAO | | 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. | | Source: | arXiv, astro-ph/0509055 | | Services: | Forum | Review | PDF | Favorites | |
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