HI Signatures of Reionization

Details HI Signatures of Reionization HI Signatures of Reionization

2002-01-09

arxiv.org/abs/astro-ph/0201136v1

Astronomy and Astrophysics

Astrophysics

8 pages. Invited talk to appear in "Seeing Through the Dust: The Detection of HI and the Exploration of the ISM in Galaxies",

Scientific paper

The exploration of the end of the Dark Ages will be one of the most exciting field of the next decade. While most of the proposed observations must await the next-generation telescopes, the observational window of the redshifted 21cm line offers the possibility to investigate the physics of reheating and reionization on a short term. Here we describe several possible signatures detectable in the wavelength range 100-200 MHz. Among the physics that can be investigated: the epoch of reheating and reionization; topology and timescales of reheating; the nature of the ionizing sources; the baryon distribution at redshift z~10. Such a good deal of information is within reach of present-day, or near-future radio facilities.

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