Preparation to the CMB PLANCK data analysis, bias due to the galactic polarized emissions

TL;DR

This paper develops a 3D model of polarized galactic emissions, such as synchrotron and dust, to assess their impact as foreground contamination on CMB polarization measurements by the PLANCK satellite.

Contribution

It introduces a coherent 3D model of galactic polarized emissions and compares it with observational data to estimate foreground contamination in CMB polarization.

Findings

The model aligns well with WMAP, ARCHEOPS, and 408 MHz survey data.

It quantifies the polarized foreground contribution to PLANCK's CMB measurements.

Provides a tool for improved foreground removal in CMB analysis.

Abstract

The PLANCK satellite mission has been launched the 14th of May 2009 and is dedicated to the measurement of the Cosmic Microwave Background (CMB) in temperature and polarization. The presence of diffuse galactic polarized emission contaminates the measurement of the CMB anisotropies, in particular in polarization. Therefore a good knowledge of these emissions is needed to the accuracy required for PLANCK. In this context, we have developed and implemented a coherent 3D model of the two main polarized galactic emissions : synchrotron radiation and thermal dust. We have compared these models to the WMAP and ARCHEOPS data and to the 408 MHz all-sky continuum survey. From this, we are able to estimate the contribution of polarized foreground emissions to the polarized CMB radiation measured with PLANCK.