Microwave Background Radiation Observations at the Owens Valley Radio Observatory

将使用欧文斯河谷射电天文台的40米和5.5米望远镜，以20和32 GHz的频率测量宇宙微波背景辐射在7分钟和24分钟弧度尺度上的固有各向异性。40米望远镜的灵敏度水平为5x10-6，5.5米望远镜的灵敏度水平为2.5x10-6。在这个层面上，现有的基于详细计算的理论预测是可以实现的。除了这些本征各向异性的观测外，还将观测到宇宙微波背景辐射与星系中的热气体相互作用所引起的Sunyaev-Zel‘dovich效应。

Measurements of the intrinsic anisotropy of the cosmic microwave background radiation on scales of 7 minutes and 24 minutes of arc will be made using the Owens Valley Radio Observatory 40 meter and 5.5 meter telescopes at a frequency of 20 and 32 GHZ. A sensitivity level of Trms/T = 5x10-6 will be achieved on the 40 meter telescope and 2.5x10-6 on the 5.5 meter telescope. At this level existing theoretical predictions based on detailed calculations are within reach. In addition to these observations of the intrinsic anisotropy, observations will be made of the Sunyaev-Zel'dovich effect caused by the interaction of the cosmic microwave background radiation with the hot gas in galaxies.