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

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

2010-07-19

arxiv.org/abs/1007.3195v1

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

proceedings of the XXIst Rencontres de Blois, 21-26/06/2009, Blois, France

Scientific paper

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.

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