The Atacama Cosmology Telescope: map-based noise simulations for DR6
The Atacama Cosmology Telescope: map-based noise simulations for DR6
Abstract The increasing statistical power of cosmic microwave background (CMB) datasets requires a commensurate effort in understanding their noise properties. The noise in maps from ground-based instruments is dominated by large-scale correlations, which poses a modeling challenge. This paper develops novel models of the complex noise covariance structure in the …