CLASS Q波段望远镜的实测性能
天体物理仪器与方法
2019-05-13 v2
摘要
宇宙学大角尺度巡天仪（CLASS）正在大角尺度（）上绘制宇宙微波背景（CMB）的偏振，以搜寻原初引力波B模信号直至张量-标量比。同一数据集将提供对再电离光深的近样本方差极限测量。2016年6月至2018年3月间，CLASS完成了迄今最大的地基Q波段CMB巡天，覆盖超过31 000平方度（75%天空），其瞬时阵列噪声等效温度（NET）灵敏度为。我们证明探测器光负载（）与噪声等效功率（）符合由光子聚束噪声主导的预期噪声模型。基于月球观测我们推导了至天线温度的定标，对应于的光学效率与系统噪声温度。最后，我们报告在处Tau A流量密度为，与WMAP Tau A时间依赖谱流量密度模型一致。
引用
@article{arxiv.1811.08287,
title = {On-sky performance of the CLASS Q-band telescope},
author = {John W. Appel and Zhilei Xu and Ivan L. Padilla and Kathleen Harrington and Bastián Pradenas Marquez and Aamir Ali and Charles L. Bennett and Michael K. Brewer and Ricardo Bustos and Manwei Chan and David T. Chuss and Joseph Cleary and Jullianna Couto and Sumit Dahal and Kevin Denis and Rolando Dünner and Joseph R. Eimer and Thomas Essinger-Hileman and Pedro Fluxa and Dominik Gothe and Gene C. Hilton and Johannes Hubmayr and Jeffrey Iuliano and John Karakla and Tobias A. Marriage and Nathan J. Miller and Carolina Núñez and Lucas Parker and Matthew Petroff and Carl D. Reintsema and Karwan Rostem and Robert W. Stevens and Deniz Augusto Nunes Valle and Bingjie Wang and Duncan J. Watts and Edward J. Wollack and Lingzhen Zeng},
journal= {arXiv preprint arXiv:1811.08287},
year = {2019}
}
备注
11 pages, 5 figures