An introduction to map-making for CMB experiments

TL;DR

This paper introduces the process of map-making in CMB experiments, explaining its importance for cosmology and detailing the MAPPRAISER implementation for converting raw data into sky maps.

Contribution

It provides a comprehensive overview of CMB map-making techniques and highlights the specific features of the MAPPRAISER implementation.

Findings

Overview of CMB map-making process

Description of MAPPRAISER implementation

Emphasis on importance for cosmological analysis

Abstract

The cosmic microwave background (CMB) anisotropies are a powerful probe of the early universe, and have largely contributed to establishing the current standard cosmological model. To extract the information encoded in those tiny variations, one must first compress the raw, time-domain data collected by a telescope into maps of the sky at the observed frequencies, in a procedure known as map-making. I provide a general introduction to this problem, and highlight a few specificities of the MAPPRAISER implementation.