报告题目:Statistical Properties of CMB B-mode polarization
报告人：赵文博士
报告时间：下午 3:50-4:50
报告地点：理学楼报告厅A101
报告题目：Statistical Properties of CMB B-mode polarization
报告人：中国科学技术大学 赵文博士
报告地点：理学楼报告厅A101
报告时间：11.18 周五下午 3:50-4:50
报告摘要：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 strongly non-gaussian field due to the lensed 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.
报告人简介： 赵文博士，中国科学技术大学教授。2002年7月与2006年12月分别于中国科学技术大学天文系获得学士和博士学位。之后分别于英国Cardiff University and Wales Institute of Mathematical & Computational Sciences, 韩国Korea Astronomy & Space Science Institute, 丹麦Niels Bohr Institute and Copenhagen University从事博士后研究。2012年11月以中科院“百人计划”到中国科学技术大学天文系任教授。主要研究方向为宇宙学和引力波，包括引力波的理论和探测，宇宙微波背景辐射，宇宙加速膨胀与暗能量，暴涨宇宙学等。目前已在PRD, JCAP, PLB, ApJ, MNRAS等杂志发表论文50余篇，被引用1000余次。
报告人：中国科学技术大学 赵文博士
报告地点：理学楼报告厅A101
报告时间：11.18 周五下午 3:50-4:50
报告摘要：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 strongly non-gaussian field due to the lensed 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.
报告人简介： 赵文博士，中国科学技术大学教授。2002年7月与2006年12月分别于中国科学技术大学天文系获得学士和博士学位。之后分别于英国Cardiff University and Wales Institute of Mathematical & Computational Sciences, 韩国Korea Astronomy & Space Science Institute, 丹麦Niels Bohr Institute and Copenhagen University从事博士后研究。2012年11月以中科院“百人计划”到中国科学技术大学天文系任教授。主要研究方向为宇宙学和引力波，包括引力波的理论和探测，宇宙微波背景辐射，宇宙加速膨胀与暗能量，暴涨宇宙学等。目前已在PRD, JCAP, PLB, ApJ, MNRAS等杂志发表论文50余篇，被引用1000余次。
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