Journal article

Prospects for redshifted 21 cm observations of quasar HII regions

J Stuart, B Wyithe, A Loeb, DG Barnes

ASTROPHYSICAL JOURNAL | IOP PUBLISHING LTD | Published : 2005

Abstract

The introduction of low-frequency radio arrays over the coming decade is expected to revolutionize the study of the reionization epoch. Observation of the contrast in redshifted 21 cm emission between a large H II region and the surrounding neutral IGM will be the simplest and most easily interpreted signature. We assess the sensitivity of three generations of planned low-frequency arrays to quasar-generated H II regions. We find that an instrument such as the planned Mileura Widefield Array Low Frequency Demonstrator (LFD) will be able to obtain good signal-to-noise ratios on H II regions around the most luminous quasars and determine some gross geometric properties, e.g., whether the H II ..

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University of Melbourne Researchers