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Mapping the Reionization Era Through the 21 cm Line Emission

Published online by Cambridge University Press:  23 September 2016

Benedetta Ciardi  and
Simon D. M. White
Benedetta Ciardi
Affiliation:
Max-Planck-Institut für Astrophysik, Karl-Schwarzschild-Str. 1, 85741 Garching, Germany
Simon D. M. White
Affiliation:
Max-Planck-Institut für Astrophysik, Karl-Schwarzschild-Str. 1, 85741 Garching, Germany

Abstract

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We will present simulations of the IGM reionization process and discuss its observability through the 21 cm line. We find that the primordial stellar sources considered in this study give a value of the reionization epoch and of the electron optical depth consistent with the observations by WMAP, without invoking the presence of additional sources of ionization. Depending on the redshift of reionization, broad-beam observations at frequencies < 100–150 MHz with the next generation of radio telescopes should reveal angular fluctuations in the sky brightness temperature in the range 5 —20 mK on scales < 5 arcmin.

Type
Session V: Intergalactic Medium
Information
Symposium - International Astronomical Union , Volume 216: Maps of the Cosmos , 2005 , pp. 290 - 296
Copyright
Copyright © Astronomical Society of the Pacific 2005 

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