A Survey of High and Low Galactic Latitude Polarization at a Wavelength of Two Centimeters

AST-0206241 Gunderson，约书亚O.该计划将建立一个新的调查仪器，以测量波长接近两厘米的星系偏振。Ku波段偏振识别器（KUPID）将在克劳福德山7米毫米波天线上集成一个非常低噪声的相关偏振计。偏振计的主要部件将在迈阿密大学建造，其他关键部件，包括微波喇叭和数据采集系统将在芝加哥大学和普林斯顿大学建造。该项目将测量北天极附近区域、低银河污染区域和银道面附近区域的Q和U斯托克斯参数。这次调查的目标是多方面的，跨越星际介质的宇宙学研究。主要目标是：（1）测量银河高纬度和低纬度同步加速器辐射的结构;（2）确定“异常发射”的来源，预计在波长2厘米附近达到峰值;（3）测量银河前景次主导时的宇宙微波背景偏振;（4）对微波各向异性探测器和其他宇宙微波背景偏振探测确定的感兴趣区域进行补充性后续探测。

AST-0206241Gunderson, Joshua O.This program will build a new survey instrument to measure galactic polarization at wavelengths near two centimeters. The Ku-band Polarization Identifier (KUPID) will integrate a very low noise, correlation polarimeter onto the Crawford Hill seven meter, millimeter-wave antenna. The primary components of the polarimeter will be built at the University of Miami and other key components, including the microwave horn and data acquisition system will be built at the University of Chicago and Princeton University. This project will measure the Q and U Stokes parameters in regions near the north celestial pole, in regions of low galactic contamination, and in regions near the galactic plane. The goals of this survey are multifold and span the studies of the interstellar medium to cosmology. The primary goals are to: (1) Measure the structure of both high and low galactic latitude synchrotron radiation; (2) Identify the source of the "anomalous emission" that is predicted to peak near a wavelength of two centimeters; (3) Measure cosmic microwave background (CMB) polarization in the event that the galactic foregrounds are subdominant; (4) Perform complementary, follow-up surveys of interesting regions identified by the Microwave Anisotropy Probe (MAP) and other Cosmic Microwave Background polarization surveys.***