Internal Delensing of Cosmic Microwave Background Polarization B-Modes with the POLARBEAR Experiment
Internal Delensing of Cosmic Microwave Background Polarization B-Modes with the POLARBEAR Experiment
复制标题
用 POLARBEAR 实验对宇宙微波背景偏振 B 模式进行内部去透镜化
DOI:
10.1103/physrevlett.124.131301
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发表时间:
2020
影响因子:
8.6
通讯作者:
H. Nishino(39番目) 他49名
中科院分区:
文献类型:
--
作者:
S. Adachi;M. Hasegawa (22番目); M. Hazumi(23番目);Y. Minami (36番目);H. Nishino(39番目) 他49名
Using only cosmic microwave background polarization data from thepolarbearexperiment, we measure-mode polarization delensing on subdegree scales at more thansignificance. We achieve a 14%-mode power variance reduction, the highest to date for internal delensing, and improve this result to 22% by applying for the first time an iterativemaximum a posterioridelensing method. Our analysis demonstrates the capability of internal delensing as a means of improving constraints on inflationary models, paving the way for the optimal analysis of next-generation primordial-mode experiments.