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21cm Cosmology – Ue-Li Pen

Date: Tue. February 18th, 2014, 11:30 am-12:30 pm
Location: Rockefeller 221

I present recent developments in a new window to map the large scale structure of the universe through intensity mapping using the collective unresolved emission of cosmic hydrogen 21cm emission. Initial maps have been made with various existing telescopes, and an ambitious survey, the Canadian Hydrogen Intensity Mapping Experiment (CHIME) is under construction. Future potential science targets include precision measurements of dark energy, neutrino masses, and possibly gravitational waves.

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