利用南极 BICEP3 观测低仰角天空与 CMB 冷斑
宇宙学与河外天体物理
2020-12-21 v2 天体物理仪器与方法
摘要
BICEP3 是位于南极的 520 mm 孔径同轴折射望远镜，在 95 GHz 观测宇宙微波背景（CMB）的偏振以搜寻来自暴胀引力波的 B 模信号。除这一主要目标外，我们开发了低仰角观测策略以扩展南极天空的覆盖，BICEP3 可借此在大面积区域上快速获得度尺度 E 模测量。一项有趣的 E 模测量是探测 CMB 冷斑周围的潜在偏振异常。在 2018-19 与 2019-20 的 austral 夏季，BICEP3 利用平面镜将波束重定向至不同低仰角范围进行天空观测。初步数据分析显示了以高信噪比测得的度尺度 E 模。
引用
@article{arxiv.2012.09363,
title = {Observing low elevation sky and the CMB Cold Spot with BICEP3 at the South Pole},
author = {J. Kang and P. A. R. Ade and Z. Ahmed and M. Amiri and D. Barkats and R. Basu Thakur and C. A. Bischoff and J. J. Bock and H. Boenish and E. Bullock and V. Buza and J. R. Cheshire and J. Connors and J. Cornelison and M. Crumrine and A. Cukierman and E. Denison and M. Dierickx and L. Duband and M. Eiben and S. Fatigoni and J. P. Filippini and S. Fliescher and N. Goeckner-Wald and D. C. Goldfinger and J. A. Grayson and P. Grimes and G. Hall and M. Halpern and S. A. Harrison and S. Henderson and S. R. Hildebrandt and G. C. Hilton and J. Hubmayr and H. Hui and K. D. Irwin and K. S. Karkare and E. Karpel and S. Kefeli and S. A. Kernasovskiy and J. M. Kovac and C. L. Kuo and K. Lau and E. M. Leitch and K. G. Megerian and L. Minutolo and L. Moncelsi and Y. Nakato and T. Namikawa and H. T. Nguyen and R. O'Brient and R. W. Ogburn and S. Palladino and N. Precup and T. Prouve and C. Pryke and B. Racine and C. D. Reintsema and S. Richter and A. Schillaci and B. L. Schmitt and R. Schwarz and C. D. Sheehy and A. Soliman and T. St. Germaine and B. Steinbach and R. V. Sudiwala and G. P. Teply and K. L. Thompson and J. E. Tolan and C. Tucker and A. D. Turner and C. Umiltà and A. G. Vieregg and A. Wandui and A. C. Weber and D. V. Wiebe and J. Willmert and C. L. Wong and W. L. K. Wu and E. Yang and K. W. Yoon and E. Young and C. Yu and L. Zeng and C. Zhang and S. Zhang},
journal= {arXiv preprint arXiv:2012.09363},
year = {2020}
}
备注
12 pages, 10 figures; Figure 7 shows the correct file