GPPU Seminar
The quest for detecting inflationary B-modes in the CMB polarisation
Ricardo Tanausu Genova Santos
(Instituto de Astrofísica de Canarias Tenerife, Spain)
Date
15:30-17:30, April 06th, 2017Place
Room 745, Science Complex B (H-03), Tohoku University mapAbstract
The search for the curl component (B mode) in the cosmic microwave background (CMB) polarisation induced by inflationary gravitational waves is nowadays driving most of the observational efforts in the CMB community. Such a detection would provide essential information about the inflationary epoch of the primordial universe, one fundamental ingredient in the standard Lambda CMD cosmological model. The expected low amplitude of the B mode signal and the foreground contamination induced by Galactic emissions poses big challenges to this task. It implies the necessity to design experiments with a high number of detectors, high sensitivity, well-controlled systematics and wide frequency coverage, in order to be able to separate the foreground contaminants from the primordial signal. In this talk I will give an overview of the current observational status of the CMB sky in polarisation, as well as of future developments, with particular emphasis on the QUIJOTE experiment, a CMB polarimeter working at 10-40 GHz from the Teide observatory in Tenerife (Spain).Point
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