| The Correlation Between Star Formation and 21cm Emission During the Reionization Epoch (2007) | |||||||||
Abstract | |||||||||
| Reionization is thought to be dominated by low mass galaxies, while direct observations of resolved galaxies probe only the most massive, rarest objects. The cross-correlation between fluctuations in the surface brightness of the cumulative Ly-alpha emission (which serves as a proxy for the star formation rate) and the redshifted 21cm signal from neutral hydrogen in the intergalactic medium (IGM), will directly probe the causal link between the production of ionizing photons in galaxies and the reionization of the IGM. We discuss the prospects for detecting this cross-correlation for unresolved galaxies. We find that on angular scales . Comment: 12 pages. 5 figures. Submitted to MNRAS | |||||||||
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