por
Dr.Rafael Rebolo
(Instituto de Astrofísica de Canarias)
→
Europe/Madrid
Sala Seminarios IFIC (Edf. Institutos de Investigación)
Sala Seminarios IFIC
Edf. Institutos de Investigación
Descripción
Primordial gravitational waves are expected as a result of Inflation. There is general agreement that these gravitational waves imprint a specific pattern of polarization (B-modes or tensor modes) in the Cosmic Microave Background. Detection of these B-modes will provide direct constraints on the energy scale of Inflation and additional information on the nature of the Inflation potential. I will describe the predictions of B-mode angular power spectra for various models and the status of current CMB polarization experiments. In particular I will describe the spanish led project QUIJOTE-CMB (Teide Observatory) which is aimed to achieve very high sensitivity polarization measurements of the northern sky in the frequency range 10-40 GHz. The combination of QUIJOTE and Planck data will allow a better control of foreground contamination and higher sensitivity to the B-modes.