Evaluating Cosmic Dawn

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• Anastasia Fialkov (KICC)
• Monday 08 October 2018, 13:00-14:00
• CMS, Pav. B, CTC Common Room (B1.19) [Potter Room].

If you have a question about this talk, please contact Tobias Baldauf.

Cosmic dawn is one of the least-explored epochs in the history of the Universe illuminated by the very first stars and black holes. 21-cm radio signal produced by the intergalactic neutral hydrogen is tied to the intensity of radiation generated by the first sources of light. The signal can be used to constrain process of primordial star and black hole formation as well as reionization. In my talk I will discuss first observational constraints on this epoch established by global 21-cm experiments at redshifts z~6-14. Pioneering radio experiments such as EDGES High-Band and SARASII deliver data which are capable to disfavor large sections of the high-redshift astrophysical parameter space. I will also discuss combined constraints with high-redshift quasars and Lyman Break Galaxies.

This talk is part of the Cosmology Lunch series.

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