Cosmic Background Isotropy Measurements from the South Pole

该项目将尝试测量来自南极站的宇宙微波背景辐射(CMBR)的各向同性。测量将由两台不同的仪器在不同的角度大小、尺度和频率下进行，并使用不同的检测技术。其中一台仪器将使用测辐射热计探测器在90 GHz的频率下以20分钟的角度进行测量。另一台仪器将使用红宝石脉泽探测器在19 GHz的频率下测量4度的角度尺度。这些仪器具有为CMBR的各向异性设定新的上限的敏感性，如果他们这样做了，那么就有必要重新阐述当前的宇宙学理论。各向异性的探测将是对当前理论的重要证实。这可能是可以进行的最重要的宇宙学测量，而南极是地球上最适合进行测量的地方。该机构和提出者非常有资格进行这项实验。提倡者利用总统特别为此目的授予的青年调查员补助金，开发了这些文书。

This project will attempt to measure the isotropy of the cosmic microwave background radiation (CMBR) from South Pole Station. The measurements will be made by two different instruments working at different angular size scales and frequencies and using different detection techniques. One of the instruments will make measurements on an angular scale of 20 minutes at a frequency of 90 GHz using a bolometer detector. The other instrument will measure angular scales of 4 degrees at a frequency of 19 GHz using a ruby maser detector. The instruments have the sensitivity to set new upper limits on the anisotropy of the CMBR, and if they do so it will be necessary to reformulate the current cosmological theories. A detection of anisotropy would be an important confirmation of the current theories. This is probably the most important cosmological measurement that can be made, and the South Pole is the best place on earth to make it. The institution and the proposer are outstandingly qualified to perform the experiment. The proposer has developed the instruments with funding from a Presidential Young Investigator grant especially awarded for that purpose.