标题： 关于普朗克模拟：迈向“二阶”分析 显示英文标题

标题： On Planck simulations: towards `2-nd order' analyses

摘要： 我们通过采用详细的微波天空模型模拟了Planck卫星的观测，该模型包括单极子、偶极子、宇宙微波背景（CMB）各向异性以及银河系和星系际前景。我们评估了在星系际源涨落存在的情况下，主波束光学畸变对CMB各向异性测量的影响，并讨论了对Planck望远镜设计的主要影响。通过对偶极子模式的分析，我们量化了在前景污染情况下，Planck探测器确定CMB光谱畸变参数的性能。 显示英文摘要

摘要： We simulate Planck observations by adopting a detailed model of the microwave sky including monopole, dipole, anisotropies of the cosmic microwave background (CMB) and galactic and extragalactic foregrounds. We estimate the impact of main beam optical aberrations on CMB anisotropy measurements in presence of extragalactic source fluctuations and we discuss the main implications for the Planck telescope design. By analysing the dipole pattern, we quantify the Planck performance in the determination of CMB spectral distortion parameters in presence of foreground contaminations.