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First stars, first black holes

by Andrea Ferrara (Scuola Normale Superiore, Pisa)

Feb 06, 2014 from 02:00 PM to 04:00 PM

Where Seminars' room, floor -1, via Ranzani 1

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The phase transition by which the cosmic gas turned again into an ionized state after recombination is dubbed Cosmic Reionization. This process is driven by the first sources of UV light in the universe and therefore can teach us a lot on the formation of the first stars and black holes. Additional information is stored into various cosmic backgrounds (UV, Near Infrared, X-ray) and intensity mapping (hydrogen Lyman Alpha and 21 cm line) data. Theory is on the way to successfully interpret the wealth of information extracted from a number of relevant experiments but many questions remain that are far cry from being answered. I will review the recent advances and sketch promising lines for future research.