Preparation to the CMB Planck analysis : contamination due to the polarized galactic emission

The Planck satellite experiment, which was launched the 14th of may 2009, will give an accurate measurement of the anisotropies of the Cosmic Microwave Background (CMB) in temperature and polarization. This measurement is polluted by the presence of diffuse galactic polarized foreground emissions. I...

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Bibliographic Details
Published inarXiv.org
Main Authors Fauvet, L, Macias-Perez, J F
Format Paper
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 19.07.2010
Subjects
Astronomical models
Big Bang theory
Contamination
Cosmic dust
Cosmic microwave background
Emission analysis
Sky surveys (astronomy)
Three dimensional models
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Summary:The Planck satellite experiment, which was launched the 14th of may 2009, will give an accurate measurement of the anisotropies of the Cosmic Microwave Background (CMB) in temperature and polarization. This measurement is polluted by the presence of diffuse galactic polarized foreground emissions. In order to obtain the level of accuracy required for the Planck mission it is necessary to deal with these foregrounds. In order to do this, have develloped and implemented coherent 3D models of the two main galactic polarized emissions : the synchrotron and thermal dust emissions. We have optimized these models by comparing them to preexisting data : the K-band of the WMAP data, the ARCHEOPS data at 353 GHz and the 408 MHz all-sky continuum survey. By extrapolation of these models at the frequencies where the CMB is dominant, we are able to estimate the contamination to the CMB Planck signal due to these polarized galactic emissions.
ISSN:2331-8422