从拼凑的 CMB 偏振图重建透镜的系统效应

IF 8.3 4区 物理与天体物理 Q1 Physics and Astronomy
Ryo Nagata, Toshiya Namikawa
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引用次数: 0

摘要

我们研究了应用于宇宙微波背景偏振拼凑图的透镜分析中系统误差的容限。我们重点研究了组成拼凑图的各个偏振图的特性,并讨论了与这些子拼凑图相关的校准残差。我们用数值模拟了作为一个整体拼凑的偏振场调制,并应用一套透镜分析来揭示重建的引力透镜势和脱镜效率的响应。我们发现,在不久的将来,在预计的系统误差水平下,可以在大于子斑尺寸的尺度上准确地重建透镜势,而且在随后的脱透镜分析中,透镜B模去除效率不会严重下降。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Systematic effects on lensing reconstruction from a patchwork of CMB polarization maps
We investigate the tolerance for systematic errors in lensing analysis applied to a patchwork map of Cosmic Microwave Background polarization. We focus on the properties of the individual polarization maps that comprise the patchwork and discuss the associated calibration residuals that are coherent on those subpatches. We numerically simulate the polarization field modulated as a whole patchwork and apply a suite of lensing analyses to reveal the response of the reconstructed gravitational lensing potential and delensing efficiency. At systematic error levels expected in the near future, we find that it is possible to accurately reconstruct the lensing potential on scales larger than the subpatch size and that there is no severe degradation of the lensing B-mode removal efficiency in the subsequent delensing analysis.
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来源期刊
Progress of Theoretical and Experimental Physics
Progress of Theoretical and Experimental Physics PHYSICS, MULTIDISCIPLINARY-PHYSICS, PARTICLES & FIELDS
CiteScore
12.00
自引率
5.70%
发文量
148
审稿时长
17 weeks
期刊介绍: Progress of Theoretical and Experimental Physics (PTEP) is an international journal that publishes articles on theoretical and experimental physics. PTEP is a fully open access, online-only journal published by the Physical Society of Japan. PTEP is the successor to Progress of Theoretical Physics (PTP), which terminated in December 2012 and merged into PTEP in January 2013. PTP was founded in 1946 by Hideki Yukawa, the first Japanese Nobel Laureate. PTEP, the successor journal to PTP, has a broader scope than that of PTP covering both theoretical and experimental physics. PTEP mainly covers areas including particles and fields, nuclear physics, astrophysics and cosmology, beam physics and instrumentation, and general and mathematical physics.
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