Theory Group : Cosmology & Extragalactic Astrophysics : Cosmic Reionization
The earliest generations of stars are thought to have transformed the universe from darkness to light and to have reionized and heated the intergalactic medium (Barkana & Loeb 2001). Knowing how the reionization process happened is a primary goal of cosmologists, because this would tell us when the early stars formed and in what kinds of galaxies. The clustering of these galaxies is particularly interesting since it is driven by large-scale density fluctuations in the dark matter (Barkana & Loeb 2004). While the distribution of neutral hydrogen during reionization can in principle be measured from maps of 21-cm emission by neutral hydrogen, upcoming experiments are expected to be able to detect ionization fluctuations only statistically (for reviews see, e.g., Furlanetto et al. 2006; Barkana & Loeb 2007)...
Measuring the History of Cosmic Reionization using the 21-cm PDF from Simulations
Theoretical astrophysics: cosmology, galaxy formation, the interstellar medium, the intergalactic medium, interstellar dust grains, astrophysical hydrodynamics.