Fast and precise map-making for massively multi-detector CMB experiments

Understand

Future cosmic microwave background (CMB) polarisation experiments aim to measure an unprecedentedly small signal - the primordial gravity wave component of the polarisation field B-mode.

• To achieve this, they will analyse huge datasets, involving years worth of time-ordered data (TOD) from massively multi-detector focal planes.
• This creates the need for fast and precise methods to complement the M-L approach in analysis pipelines.
• In this paper, we investigate fast map-making methods as applied to long duration, massively multi-detector, ground-based experiments, in the context of the search for B-modes.