Detection of B-mode Polarization in the Cosmic Microwave Background Radiation at Degree Angular Scales with BICEP2
Aula Bruno Touschek (LNF INFN)
Aula Bruno Touschek
Via Enrico Fermi, 40
The BICEP2 telescope is an instrument designed to search for the signature of primordial gravitational waves on the polarization of the
cosmic microwave background (CMB) at degree angular scales. Such
gravitational waves are a generic prediction of inflationary models of the early universe. BICEP2 observed from the South Pole for three seasons from 2010 to 2012, mapping the sky at 150GHz with a planar array of 500 polarization sensitive antenna-coupled TES bolometers. This new detector technology has enabled a large increase in sensitivity with respect to previous instruments. I will present the first results from this instrument, outline the observations and the analysis that led to this result, and discuss its implications for cosmology.