YCAA Seminar: “Signals from Cosmic Dawn”, Anastasia Fialkov, Harvard-Smithsonian Center for Astrophysics

Event time: 
Tuesday, March 21, 2017 - 2:30pm
Hours of operation: 

coffee/tea and cookies will be served in the lounge of Steinbach Hall (52 Hillhouse) starting at 2 PM.

Watson (), A-51 See map
60 Sachem St
New Haven, CT 06511
Event description: 

Cosmic dawn is an epoch of cosmic history when the first population of stars formed. This epoch, inaccessible to existing observations, is one of the major future observational frontiers. In my talk I will discuss methods to observe and characterize this epoch focusing on the 21-cm signal of neutral hydrogen. Detecting this signal will complete our understanding of cosmic history. As I will show in my talk, the signal is sensitive to the processes through which first stars and black holes formed, it can constrain spectra of stars and their remnants in multiple wavebands, finally it can help to determine the nature of first heating and ionizing sources.