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Ground-based Cosmic Microwave Background polarization observations.

Zannoni M.
  Venerdì 15/09   15:30 - 18:30   Aula A203   III - Astrofisica
Cosmic Microwave Background (CMB) is one of the most sensitive tool to investigate the very early universe. The last frontier in this field is the quest for B mode on large angular scales, directly probing the stochastic background of gravitational waves predicted by the inflationary paradigm. The detection of this extremely weak signal passes through a deep knowledge of systematic effects, both of instrumental and astrophysical in origin. In this contribution I shall review the status of the ground-based activities, with a particular focus on two international experiments, QUBIC and LSPE-STRIP, where the Italian community plays a major role.