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The rich complexity of 21-cm fluctuations produced by the first stars
Anastasia Fialkov, Rennan Barkana
We explore the complete history of the 21-cm signal in the redshift range z = 7-40. This redshift range includes various epochs of cosmic evolution related to primordial star forma…
The observable signature of late heating of the Universe during cosmic reionization
Anastasia Fialkov, Rennan Barkana, Eli Visbal
Models and simulations of the epoch of reionization predict that spectra of the 21-cm transition of atomic hydrogen will show a clear fluctuation peak, at a redshift and scale, res…
High-Redshift Star Formation in a Time-Dependent Lyman-Werner Background
Eli Visbal, Zoltan Haiman, Bryan Terrazas +2
The first generation of stars produces a background of Lyman-Werner (LW) radiation which can photo-dissociate molecular hydrogen, increasing the mass of dark matter halos required…
Detecting the First Stars and Black Holes with 21-cm Cosmology
Rennan Barkana
Understanding the formation and evolution of the first stars and galaxies represents one of the most exciting frontiers in astronomy. Since the universe was filled with neutral hyd…