BICEP2/Keck Array V：Keck Array在度角尺度和150 GHz处的B模偏振测量
宇宙学与河外天体物理
2015-10-06 v2
摘要
Keck Array是一套宇宙微波背景（CMB）偏振计系统，每个都与BICEP2实验类似。在本文中，我们报告了2012年和2013年观测季的结果，在此期间Keck Array由五个接收器组成，均在与BICEP2相同的（150 GHz）频段和观测场运行。我们再次在30<ℓ<150范围内发现B模功率超过透镜化ΛCDM期望值>5σ，并通过刀切检验和基于详细校准测量的模拟确认这并非由系统误差所致。在地图差分和谱差分检验中，这些新数据与BICEP2一致。最后，我们将两个实验的地图进行组合，生成了最终的Q和U地图，在有效面积400 deg²上具有57 nK deg（3.4 μK arcmin）的深度，等效巡天权重为250,000 μK⁻²。最终BB波段功率的噪声不确定性比此前结果好2.3倍，探测超额功率的显著性为>6σ。
引用
@article{arxiv.1502.00643,
title = {BICEP2 / Keck Array V: Measurements of B-mode Polarization at Degree Angular Scales and 150 GHz by the Keck Array},
author = {The BICEP2 and Keck Array Collaborations and : and P. A. R. Ade and Z. Ahmed and R. W. Aikin and K. D. Alexander and D. Barkats and S. J. Benton and C. A. Bischoff and J. J. Bock and J. A. Brevik and I. Buder and E. Bullock and V. Buza and J. Connors and B. P. Crill and C. D. Dowell and C. Dvorkin and L. Duband and J. P. Filippini and S. Fliescher and S. R. Golwala and M. Halpern and M. Hasselfield and S. R. Hildebrandt and G. C. Hilton and V. V. Hristov and H. Hui and K. D. Irwin and K. S. Karkare and J. P. Kaufman and B. G. Keating and S. Kefeli and S. A. Kernasovskiy and J. M. Kovac and C. L. Kuo and E. M. Leitch and M. Lueker and P. Mason and K. G. Megerian and C. B. Netterfield and H. T. Nguyen and R. O'Brient and R. W. Ogburn and A. Orlando and C. Pryke and C. D. Reintsema and S. Richter and R. Schwarz and C. D. Sheehy and Z. K. Staniszewski and R. V. Sudiwala and G. P. Teply and K. L. Thompson and J. E. Tolan and A. D. Turner and A. G. Vieregg and A. C. Weber and J. Willmert and C. L. Wong and K. W. Yoon},
journal= {arXiv preprint arXiv:1502.00643},
year = {2015}
}
备注
13 pages, 9 figures