Date: Nov. 6, 2022

Speaker: 
Prof. Rennan Barkana
School of Physics, Tel Aviv University

Title:
21-cm cosmology at a crossroads

Abstract:

Radio waves from high redshift are expected to show a rich signal due
to the 21-cm line of intergalactic hydrogen. After years of
theoretical predictions, a large international effort is now producing
the first tentative results. The coming confrontation of theory and
observations will reveal to us the mysterious era of cosmic dawn,
including the properties of the first stars and galaxies and possibly
more exotic discoveries. There are also plans to probe the pre-stellar
"dark ages" with telescopes on the moon. We will give a summary and
update of the theoretical developments and observational prospects.