Speaker
Gianni Bernardi
(INAF-IRA)
Description
The redshifted 21 cm line is a powerful probe of the epoch when the first stars and galaxies were born and, consequently, reionized the intergalactic medium. In this talk I will present upper limits on the redshifted 21 cm line obtained through observations with the Hydrogen Epoch of Reionization Array showing that the intergalacticm medium was heated above the adiabatic limit before z ~ 8. I will also present constrained on the 21 cm signal obtained from absorptioin against bright quasars, ruling out the presence of pockets of cold, neutral Hydrogen at the end of cosmic reionization.
| Stream | Science or Engineering |
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Primary author
Gianni Bernardi
(INAF-IRA)