Observing low elevation sky and the CMB Cold Spot with BICEP3 at the South Pole

Observing low elevation sky and the CMB Cold Spot with BICEP3 at the South Pole
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在南极用 BICEP3 观测低海拔天空和 CMB 冷点

DOI:
10.1117/12.2562066
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发表时间:
2020
期刊:
and Far-Infrared Detectors and Instrumentation for Astronomy X
影响因子:
--
通讯作者:
Bullock, Eric
Bullock, Eric
中科院分区:
--
文献类型:
--
作者:
Kang, Jae Hwan;Ade, P. A.;Ahmed, Zeeshan;Amiri, Mandana;Barkats, Denis;Basu Thakur, Ritoban;Bischoff, Colin A.;Bock, James J.;Boenish, Hans;Bullock, Eric

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BICEP 3是位于南极的520 mm口径轴上折射望远镜,它观测95 GHz宇宙微波背景(CMB)的偏振,以寻找暴胀引力波的B模信号。除了这一主要目标,我们还开发了一种低海拔观测策略,以扩大南极南部天空的覆盖范围,BICEP 3可以在大面积上快速实现度尺度的E模式测量。一个有趣的E模式测量是探测CMB冷点周围潜在的偏振异常。在2018-19年和2019-20年的夏季,BICEP 3用平面镜观察天空,将光束重定向到各种低海拔范围。初步的数据分析表明,度尺度的E模式测量具有高的信噪比。
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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影响因子: --
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St Germaine, Tyler;Ade, P.A.R.;Ahmed, Zeeshan;Amiri, Mandana;Barkats, Denis;Basu Thakur, Ritoban;Bischoff, Colin A.;Bock, James J.;Boenish, Hans;Bullock, Eric
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