论文标题

由于Sunyaev-Zel'Dovich效应和CMB低多物的独立估计,Stokes参数光谱畸变造成

Stokes parameters spectral distortions due to the Sunyaev-Zel'dovich effect and an independent estimation of the CMB low multipoles

论文作者

Novikov, D. I., Pilipenko, S. V., de Petris, M., Luzzi, G., Mihalchenko, A. O.

论文摘要

我们考虑由于各向异性宇宙微波背景(CMB)辐射,Sunyaev-Zel'Dovich效应(SZ)朝向星系簇而引起的Stokes参数频谱畸变。我们挑选出一种非常特殊的扭曲类型,并为它们找到简单的分析公式。我们表明,这种失真具有非常独特的光谱形状,并且可以与其他种类的污染物分开。我们证明,这种效果使我们有机会独立估计低型角角CMB各向异性,例如偶极子,四极杆和Octupole。我们还表明,使用来自附近和远处群集的扭曲信号,可以区分Sachs-Wolfe和集成的Sachs-Wolfe效果。通过高角度分辨率和高敏性空间任务,例如即将到来的毫米毫米空间天文台实验,对这种扭曲的检测可能是可行的。

We consider the Stokes parameters' frequency spectral distortions arising due to Compton scattering of the anisotropic cosmic microwave background (CMB) radiation, the Sunyaev-Zel' dovich effect (SZ), towards clusters of galaxies. We single out a very special type of such distortions and find simple analytical formulas for them. We show that this kind of distortion has a very distinctive spectral shape and can be separated from other kinds of contaminants. We demonstrate that this effect gives us an opportunity for an independent estimation of the low-multipole angular CMB anisotropies, such as the dipole, the quadrupole, and the octupole. We also show that, using distorted signals from nearby and distant clusters, one can distinguish between the Sachs-Wolfe and the integrated Sachs-Wolfe effects. The detection of such distortions can be feasible with high-angular resolution and high-sensitivity space missions, such as the upcoming Millimetron Space Observatory experiment.

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