28-30 March 2023
Mario Royal Kaikan (Chino, Nagano) + Online
Asia/Tokyo timezone

Impact of HWP systematics on the measurement of cosmic birefringence from CMB polarization

28 Mar 2023, 16:00
Mario Royal Kaikan (Chino, Nagano) + Online

Mario Royal Kaikan (Chino, Nagano) + Online



Marta Monelli


Employing an half-wave plate (HWP) as polarization modulator is a promising strategy to mitigate systematics in CMB experiments. However, if not calibrated well enough or accounted for correctly in the analysis, its non-idealities represent an additional source of systematics that can impact the science extracted from CMB. In this talk, I will show how their effect on the observed angular power spectra is partially degenerate with cosmic birefringence, according to both simulations and analytical computations.

Presentation Materials