University of Minnesota
School of Physics & Astronomy

Physics and Astronomy Calendar

Monday, February 29th 2016
12:15 pm:
Speaker: Tomotake Matsumura, Institute of Space and Astronautical Science (ISAS/JAXA)
Subject: Next generation inflationary probe using CMB polarization: LiteBIRD

LiteBIRD is a next generation satellite mission to probe the physics of inflation by measuring the cosmic microwave background polarization. The science goal of LiteBIRD is to measure the primordial B-mode with a sensitivity of sigma_r<0.001, and this enables to test the major large-single-field slow-roll inflation models. The design philosophy is to focus on measuring the inflationary B-mode at ell below 200. Currently there is a worldwide competition to hunt this inflationary B-mode signal first by ground- based, balloon-borne, and space-borne CMB experiments. A satellite platform is ideal to probe the large angular scale B-mode with high sensitivity due to no atmosphere. LiteBIRD measures from L2 for three years using a superconducting detector array. The observing frequency spans from 40 to 400 GHz and LiteBIRD scans about 50 % of sky within a day. A signal is modulated by a half-wave plate to mitigate the detector system 1/f and the differential systematics. Currently LiteBIRD is in transition to Phase-A1. In this talk, we will describe the mission concept, the overview, and the current status of LiteBIRD.

Faculty Host: Shaul Hanany

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