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

这个项目将建造一个新的测量仪器，在近两厘米的波长测量银河系的偏振。Ku波段极化识别器(KUPID)将在Crawford Hill 7米毫米波天线上集成一个非常低噪声的相关偏振器。旋光仪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地区、银河系低污染地区和银河系平面附近地区的Q和U斯托克斯参数。这项调查的目标是多方面的，从星际介质的研究到宇宙学。主要目标是：(1)测量银河系高纬度和低纬度同步辐射的结构；(2)确定预计将在两厘米波长附近达到峰值的“异常发射”的来源；(3)在银河系前景处于次要地位的情况下测量宇宙微波背景(CMB)偏振；(4)对由微波各向异性探测器(MAP)和其他宇宙微波背景偏振测量确定的感兴趣区域进行补充、后续调查。

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.***