阿塔卡马B模搜寻(ABS)实验的结果
宇宙学与河外天体物理
2018-09-19 v1 天体物理仪器与方法
摘要
阿塔卡马B模搜寻(ABS)是一项旨在大角尺度()上测量宇宙微波背景(CMB)偏振的实验。它在智利北部海拔5190~m的ACT台址以145 GHz运行，净灵敏度(NEQ)为41 K。它采用以2.55 Hz旋转的环境温度蓝宝石半波片来调制入射偏振信号并降低系统误差。我们在此报告对以赤纬、赤经为中心、面积为2400 deg的天区数据所作的分析。我们进行了盲分析。解盲后，我们发现与Planck在同一天区的TE和EE测量一致。我们勉强探测到偏振尘埃发射，并在相当于100个在天空观测日的观测下给出张量-标量比的上限(95% cl)。我们还给出了Tau A偏振的新测量，并介绍了与基于半波片的观测相关的新方法。
引用
@article{arxiv.1801.01218,
title = {Results from the Atacama B-mode Search (ABS) Experiment},
author = {Akito Kusaka and John Appel and Thomas Essinger-Hileman and James A. Beall and Luis E. Campusano and Hsiao-Mei Cho and Steve K. Choi and Kevin Crowley and Joseph W. Fowler and Patricio Gallardo and Matthew Hasselfield and Gene Hilton and Shuay-Pwu P. Ho and Kent Irwin and Norman Jarosik and Michael D. Niemack and Glen W. Nixon and Michael Nolta and Lyman A. Page and Gonzalo A. Palma and Lucas Parker and Srinivasan Raghunathan and Carl D. Reintsema and Jonathan Sievers and Sara M. Simon and Suzanne T. Staggs and Katerina Visnjic and Ki-Won Yoon},
journal= {arXiv preprint arXiv:1801.01218},
year = {2018}
}
备注
38 pages, 11 figures