Source separation on astrophysical data sets from the WMAP satellite

TL;DR

This paper applies blind source separation techniques to WMAP satellite data, successfully isolating the CMB component and confirming its consistency with cosmological models, demonstrating the method's usefulness in cosmology.

Contribution

First application of blind ICA to WMAP data, enabling component separation and cosmological analysis with validation against existing models.

Findings

Successful extraction of CMB component

CMB emission law matches cosmological expectations

Spatial power spectrum consistent with models

Abstract

This paper presents and discusses the application of blind source separation to astrophysical data obtained with the WMAP satellite. Blind separation permits to identify and isolate a component compatible with CMB emission, and to measure both its spatial power spectrum and its emission law. Both are found to be compatible with the present concordance cosmological model. This application demonstrates the usefulness of blind ICA for cosmological applications.