25 years of Cosmic Microwave Background research at INPE

TL;DR

This paper reviews 25 years of Cosmic Microwave Background research at INPE, highlighting technological developments, data analysis advancements, and scientific findings in anisotropy and polarization studies.

Contribution

It provides a comprehensive historical overview of INPE's contributions to CMB research, including instrumental innovations and data analysis techniques over 25 years.

Findings

Development of balloon-borne radiometers for CMB measurements

Advancements in polarization data analysis and foreground characterization

Insights into CMB anisotropy and non-Gaussianity studies

Abstract

This article is a report of 25 years of Cosmic Microwave Background activities at INPE. Starting from balloon flights to measure the dipole anisotropy caused by the Earth's motion inside the CMB radiation field, whose radiometer was a prototype of the DMR radiometer on board COBE satellite, member of the group cross the 90s working both on CMB anisotropy and foreground measurements. In the 2000s, there was a shift to polarization measurements and to data analysis, mostly focusing on map cleaning, non-gaussianity studies and foreground characterization.