利用BICEP3在南极观测低海拔天空和CMB冷斑

J. Kang, P. Ade, Z. Ahmed, M. Amiri, D. Barkats, R. Thakur, C. Bischoff, J. Bock, J. Bock, H. Boenish, E. Bullock, V. Buza, J. Cheshire, J. Connors, J. Cornelison, M. Crumrine, A. Cukierman, E. Denison, M. Dierickx, L. Duband, M. Eiben, S. Fatigoni, J. Filippini, S. Fliescher, N. Goeckner-wald, D. Goldfinger, J. Grayson, P. Grimes, G. Hall, M. Halpern, S. Harrison, Shawn W. Henderson, S. Hildebrandt, S. Hildebrandt, G. Hilton, J. Hubmayr, H. Hui, K. Irwin, K. Karkare, E. Karpel, S. Kefeli, S. Kernasovskiy, J. Kovac, C. Kuo, K. Lau, E. Leitch, K. Megerian, L. Minutolo, L. Moncelsi, Y. Nakato, T. Namikawa, H. Nguyen, H. Nguyen, R. O’Brient, R. O’Brient, R. W. Ogburn, S. Palladino, N. Precup, T. Prouvé, C. Pryke, C. Pryke, B. Racine, C. Reintsema, Steffen Richter, A. Schillaci, B. Schmitt, R. Schwarz, C. Sheehy, A. Soliman, T. S. Germaine, B. Steinbach, R. Sudiwala, G. Teply, K. Thompson, J. Tolan, C. Tucker, A. Turner, C. Umilta, A. Vieregg, A. Wandui, A. Weber, D. Wiebe, J. Willmert, C. L. Wong, W. L. K. W
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引用次数: 1

摘要

BICEP3是一个520毫米口径的轴向折射望远镜,位于南极,观测宇宙微波背景(CMB)在95 GHz的偏振,以寻找暴胀引力波的b模信号。除了这个主要目标之外,我们还开发了一个低海拔观测策略,以扩大南极南部天空的覆盖范围,BICEP3可以在那里快速实现大面积的度尺度e模式测量。一个有趣的e模测量正在探测CMB冷点周围潜在的极化异常。在2018-19年和2019-20年的南方夏季,BICEP3用平面镜观测天空,将光束重新定向到不同的低海拔范围。初步数据分析表明,测得的度尺度e模具有较高的信噪比。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Observing low elevation sky and the CMB Cold Spot with BICEP3 at the South Pole
BICEP3 is a 520 mm aperture on-axis refracting telescope at the South Pole, which observes the polarization of the cosmic microwave background (CMB) at 95 GHz to search for the B-mode signal from inflationary gravitational waves. In addition to this main target, we have developed a low-elevation observation strategy to extend coverage of the Southern sky at the South Pole, where BICEP3 can quickly achieve degree-scale E-mode measurements over a large area. An interesting E-mode measurement is probing a potential polarization anomaly around the CMB Cold Spot. During the austral summer seasons of 2018-19 and 2019-20, BICEP3 observed the sky with a flat mirror to redirect the beams to various low elevation ranges. The preliminary data analysis shows degree-scale E-modes measured with high signal-to-noise ratio.
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