Arcminute Cosmology Bolometric Array Receiver

弧分宇宙学测辐射热阵列接收器

• 批准号: 0091840
• 负责人: William Holzapfel
• 金额: $ 90万
• 依托单位: University of California-Berkeley
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-10-01 至 2005-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0091840&HistoricalAwards=false
• 关键词: Arcminute; Cosmology; Bolometric; Array; Receiver

0091840HolzapfelThe proposed work will continue a study of the cosmic microwave background (CMB) anisotropies and the Sunyaev-Zel'dovich effect (SZE) with the ACBAR (Arcminute Cosmology Bolometer Array Receiver) instrument, operating at South Pole station. Because of its stable atmosphere and extremely low water vapor, the South Pole is the best known terrestrial site from which to carry out this program of observations. The instrument itself is a sixteen element bolometer array, operating at 0.03 deg K, designed specifically for observations of CMB anisotropy and the SZE. It will operate in atmospheric windows spanning millimeter to submillimeter wavelengths; extending the spectral range over which observations of anisotropies are made is necessary to separate cosmic microwave background signals from foreground contamination. The combination of sensitive detectors, high angular resolution, and broad frequence coverage the instrument will advance cosmology research on several fronts. The project will determine cluster peculiar velocities (the motion of galaxy clusters with respect to the rest frame of the CMB), extend measurements of primordial CMB anisotropies to small angular scales, and serve as a natural complement to balloon and satellite missions at larger angular scales. ***

0091840 Holzapfel拟议的工作将继续利用南极站运行的ACBAR（弧分钟宇宙学测辐射热仪阵列接收器）仪器研究宇宙微波背景（CMB）各向异性和Sunyaev-Zel'dovich效应（SZE）。 由于其稳定的大气层和极低的水蒸气，南极是最有名的陆地网站，从执行这一计划的观测。 该仪器本身是一个16元件测辐射热计阵列，在0.03度K，专为CMB各向异性和SZE的观测。它将在毫米到亚毫米波长的大气窗口中工作;扩展观测各向异性的光谱范围是将宇宙微波背景信号与前景污染分开所必需的。该仪器结合了灵敏的探测器、高角分辨率和宽频率覆盖范围，将在几个方面推进宇宙学研究。 该项目将确定星系团特有的速度（星系团相对于宇宙微波背景辐射静止坐标系的运动），将原始宇宙微波背景辐射各向异性的测量扩展到小角度尺度，并作为气球和卫星飞行任务在更大角度尺度的自然补充。 ***