A Bolometric Array Receiver for Measurements of Polarization of the Cosmic Microwave Background Radiation

该奖项支持一项用于测量宇宙微波背景辐射偏振的辐射热测量阵列接收器的可行性研究。这台仪器将使用一个辐射热计阵列来搜索毫米波长的偏振，该阵列将同时在两个正交的线性偏振方向上观测天空中的40个像素点。接收器将安装在位于夏威夷莫纳克亚山的1.5米望远镜上，该地点既有极好的观测条件，又有廉价、便利的现有支持设施。该仪器将被优化为在100至220千兆赫的频率上进行观测，以使微小的极化信号与天体物理前景区分开来。该仪器将允许在50到1000的l范围内精确测量偏振模式的功率谱。＊＊＊

Church award abstractThis award supports a feasibility study of a Bolometric Array Receiver for Measurements of Polarization of the Cosmic Microwave Background Radiation. This instrument would search for polarization at millimeter wavelengths using a bolometer array that will simultaneously observe 40 pixels on the sky in two orthogonal directions of linear polarization. The receiver would be mounted on a 1.5m telescope sited at Mauna Kea, Hawaii, a location that combines superb observing conditions with a cheap, convenient location that has good existing support facilities. The instrument would be optimized to observe at frequencies of 100 to 220 GHz to allow the tiny polarized signal to be distinguished from astrophysical foregrounds. This instrument would allow a precise measurement of the power spectrum of polarization modes over an l-range of 50 to 1000. ***