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Article Contents

ABSTRACT

1.INTRODUCTION

2.COSMOGONIC PRELIMINARIES: MOLECULAR HYDROGEN AND UV FEEDBACK

2.1.The H₂ Cooling Regime

2.2.The Atomic-Cooling Stage

3.THE EPOCH OF IONIZATION BREAKTHROUGH

3.1.UV Production in `Subgalaxies'

3.2.How Uncertain is the Ionization Epoch?

3.3.Detecting `Pregalaxies' at Very High Redshift

3.4.The `Breakthrough' Epoch

3.5.Black Hole Formation and AGNs at High z?

3.6.Distinguishing Between Objects with z > z_i and z < z_i

4.RADIO AND MICROWAVE PROBES OF THE IONIZATION EPOCH

4.1.CMB Fluctuations as a Probe of the Ionization Epoch

4.2.21 cm Emission, Absorption and Tomography

5.VERY DISTANT SUPERNOVAE (AND PERHAPS GAMMA-RAY BURSTS)

5.1.The Supernova Rate at High Redshifts

5.2.Gamma Ray Bursts: The Most Luminous Known Cosmic Objects

6.WHERE ARE THE OLDEST (AND THE EXTREME METAL-POOR) STARS?

7.SUMMARY

REFERENCES