Probing the statistical properties of CMB B-mode polarization through Minkowski functionals

被引：16

作者：

Santos, Larissa ^{[1
]}

Wang, Kai ^{[1
]}

Zhao, Wen ^{[1
]}

机构：

[1] Univ Sci & Technol China, Chinese Acad Sci, Dept Astron, CAS Key Lab Res Galaxies & Cosmol, Hefei 230026, Anhui, Peoples R China

来源：

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2016年 / 07期

关键词：

CMBR polarisation; cosmological parameters from CMBR; PRIMORDIAL NON-GAUSSIANITY; MICROWAVE BACKGROUND POLARIZATION; ANISOTROPY POWER SPECTRUM; C-L ESTIMATORS; WMAP OBSERVATIONS; E/B DECOMPOSITION; GRAVITATIONAL-WAVES; PLANCK; SCALE; TEMPERATURE;

D O I：

10.1088/1475-7516/2016/07/029

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The detection of the magnetic type B-mode polarization is the main goal of future cosmic microwave background (CMB) experiments. In the standard model, the B-mode map is a strong non-gaussian field due to the CMB lensing component. Besides the two-point correlation function, the other statistics are also very important to dig the information of the polarization map. In this paper, we employ the Minkowski functionals to study the morphological properties of the lensed B-mode maps. We find that the deviations from Gaussianity are very significant for both full and partial-sky surveys. As an application of the analysis, we investigate the morphological imprints of the foreground residuals in the B mode map. We find that even for very tiny foreground residuals, the effects on the map can be detected by the Minkowski functional analysis. Therefore, it provides a complementary way to investigate the foreground contaminations in the CMB studies.

引用

页数：42

共 37 条

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