21cm Cosmology

by Prof. Ue-Li Pen (21cm Cosmology)

Monday, July 11, 2011 from 16:00 to 17:00 (Asia/Kolkata)
at Colaba Campus ( A304 )

Description

From the time the Universe was just four-hundred thousand years old to
when it was one-billion years old, most of its hydrogen was
neutral. Neutral hydrogen produces 21cm radiation, and the amount of
information in this signal dwarfs that of all other cosmological
probes.

Recently, the first cosmological detections of 21cm large scale
structure have been reported.  This is the first light from a
potentially rich window onto the universe. I will discuss some of the
physics that can be obtained from future measurements, from gravity
waves to dark energy, and describe observational strategies to achieve
that.