Cosmic Microwave Background Images

TL;DR

This paper provides a tutorial on detecting and analyzing compact sources in cosmic microwave background data, highlighting their impact on cosmological parameter estimation and their importance for understanding the universe's structure.

Contribution

It offers a comprehensive tutorial on methods for detecting and analyzing compact sources in CMB data, emphasizing their significance for cosmology and large-scale structure studies.

Findings

Compact sources significantly bias cosmological parameter estimates.

Detection methods improve accuracy of source identification.

Analysis enhances understanding of universe's large-scale structure.

Abstract

We aim to present a tutorial on the detection, parameter estimation and statistical analysis of compact sources (far galaxies, galaxy clusters and Galactic dense emission regions) in cosmic microwave background observations. The topic is of great relevance for current and future cosmic microwave background missions because the presence of compact sources in the data introduces very significant biases in the determination of the cosmological parameters that determine the energy contain, origin and evolution of the universe and because compact sources themselves provide us with important information about the large scale structure of the universe.