Map-making strategies for next generation CMB experiments

Abstract

I briefly review some of the most common map-making strategies for experiments targeting the polarization of the Cosmic Microwave Background (CMB), in light of the anticipated volumes of data collected by next generation observatories such as Simons Observatory and CMB-S4. Then, I focus on the pair-differencing approach, used for example in the POLARBEAR and BICEP collaborations. Using simulations including a number of systematic effects, I evaluate the impact of correlated and unpolarized signals such as coming from the atmosphere, which is a major contaminant for ground-based experiments.