Abstract Details
| Name: Dr. Tuhin Ghosh Affiliation: National Institute of Science Education and Research Conference ID: ASI2018_1526 Title : Measurements of Degree-scale B-mode polarization with BICEP2, Keck Array and Planck Authors and Co-Authors : Tuhin Ghosh (on behalf of the Planck and BICEP2/Keck Array collaboration) Abstract Type : Invited Abstract Category : General Relativity and Cosmology Abstract : One generic prediction of cosmic inflation is the existence of a background of gravitational waves, which produces a distinct, curl-like, signature in the polarisation of the cosmic microwave background radiation (CMB), referred to as primordial B-mode signal. Planck polarization maps indicates that the foreground Galactic dust polarization signal dominates over the primordial B-mode signal even in the high-latitude sky. The BICEP/Keck Array program comprises a series of telescopes at the South Pole designed to measure CMB polarization on degree angular scale at multiple frequencies (95, 150, 220 and 270 GHz) to separate well the foreground Galactic dust contamination from the primordial B-mode signal. In my talk, I will present the current status of primordial CMB B-mode detection using multifrequency sky observations. |