A numerical study of observational systematic errors in lensing analysis of CMB polarization

被引：9
|
作者：
Nagata, Ryo [1 ]
Namikawa, Toshiya [2 ]
机构：
[1] Inst Space & Astronaut Sci ISAS, Japan Aerosp Explorat Agcy JAXA, Sagamihara, Kanagawa 2525210, Japan
[2] Univ Cambridge, Dept Appl Math & Theoret Phys, Wilberforce Rd, Cambridge CB3 0WA, England
来源：
PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS | 2021年 / 2021卷 / 05期
基金：
日本学术振兴会;
关键词：
100 SQUARE DEGREES; POWER SPECTRUM; MODE POLARIZATION; TEMPERATURE; SCALES;
D O I：
10.1093/ptep/ptab040
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Impacts of observational systematic errors on the lensing analysis of the cosmic microwave background (CMB) polarization are investigated by numerical simulations. We model errors of gain, angle, and pointing in observation of the CMB polarization and simulate polarization fields modulated by the errors. We discuss the response of systematics-induced B-modes to amplitude and spatial scale of the imposed errors and show that the results of the lensing reconstruction and delensing analysis behave according to it. It is observed that error levels expected in the near future lead to no significant degradation in delensing efficiency.
引用
收藏
页数：20
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