Selection of an Experimental Site in Colombia and Preliminary Measurements of the Sky Brightness and Polarization at Long Wavelengths

该奖项将支持乔治与 斯穆特说， 加州伯克利和天体物理学的塞尔吉奥托雷斯 波哥大安第斯山脉大学的研究小组， 哥伦比亚. 该项目旨在研究大气 条件和初步射电天文测量， 与国家科学基金会支持的低 宇宙微波背景的频率测量 辐射（CMBR）。 通过观察CMBR的光谱分布， 研究人员可以研究发生在一个 宇宙的早期， 引发的星系形成一定会在 辐射 来自赤道附近的数据将 提供对银道面的最大观测。 这 该项目将绘制银河系发射的正交 线性极化，以产生更精确的 比现在的地图还多。 除了获得银河系 强度数据，研究人员将选择网站， 未来的极化测量需要相关 在不同地点收集的数据。 美国集团已 为CMBR开发了辐射测量技术 在项目中使用的测量。 哥伦比亚 集团将为该项目提供基础设施， 哥伦比亚，以及拟议的设施和进入 收集数据以改进银河系模型的网站。

This award will support collaboration between George Smoot of the space sciences group at the University of California-Berkeley and Sergio Torres of the astrophysics group at the Universidad de los Andes in Bogota, Colombia. The project aims to study atmospheric conditions and preliminary radioastronomical measurements, in conjunction with the NSF-supported project on low frequency measurements of the cosmic microwave background radiation (CMBR). By looking at the spectral distribution of the CMBR, the researchers can study the process that took place in an early epoch of the universe when the mechanisms that triggered galaxy formation must have left an imprint in the radiation. Data from a site near the equator will provide maximum observation of the galactic plane. This project will map the galactic emission in orthogonal linear polarizations, in order to produce more precise maps than exist today. Besides acquiring galactic intensity data, the researchers will select sites for future polarization measurements requiring correlation of data taken at different sites. The U.S. group has developed the radiometric technique for the CMBR measurements to be used in the project. The Colombian group will provide the infrastructure for the project in Colombia, as well as facilities and access to proposed sites for collecting data to improve galactic models.