标题： 准备对普朗克卫星CMB数据的分析，评估来自银河系偏振辐射的污染影响 显示英文标题

标题： Preparation to the CMB PLANCK data analysis, estimation of the contamination due to the galactic polarized emissions

摘要： 这项工作是为分析PLANCK卫星数据做准备的关键点。 PLANCK卫星是ESA的一项任务，于2009年5月14日发射，专门用于测量宇宙微波背景（CMB）的温度和偏振。 银河系弥漫性偏振辐射的存在干扰了CMB各向异性的测量，特别是在偏振方面。 因此，为了满足PLANCK所需的精度水平，需要详细了解这些辐射。 在此背景下，我们开发并实现了一个协调一致的三维模型，用于描述两种主要的银河系偏振辐射：同步辐射和热尘辐射。 我们将这些模型与现有的数据进行了比较：WMAP数据的23 GHz频段、Archeops数据的353 GHz频段以及408 MHz全天连续谱巡天。 我们将这些模型外推到CMB占主导地位的频率，并能够估算极化前景辐射对PLANCK测量的极化CMB辐射的贡献。 显示英文摘要

摘要： This work is point of the preparation to the analysis of the PLANCK satellite data. The PLANCK satellite is an ESA mission which has been launched the 14th of may 2009 and is dedicaced to the measurement of the Cosmic Microwave Background (CMB) in temperature and polarization. The presence of diffuse Galactic polarized emissions disturb the measurement of the CMB anisotropies, in particular in polarization. Therefore a precise knowledge of these emissions is needed to obtain the level of accuracy required for PLANCK. In this context, we have developed and implemented a coherent 3D model of the two mains polarized Galactic emissions : synchrotron and thermal dust. We have compared these models to preexisting data: the 23 GHz band of the WMAP data, the 353 GHz Archeops data and the 408 MHz all-sky continuum survey. We extrapolate these models to the frequencies where the CMB dominates and we are able to estimate the contribution of polarized foreground emissions to the polarized CMB emission measured with PLANCK.