Polarimetry at the Caltech Submillimeter Observatory

芝加哥大学开发的远红外偏振测量技术使我们有可能在我们银河系的单个云层中制作数百个点的偏振图。通过将极化向量旋转90度，可以推断出这些云团中的磁力线的地图。这个由罗杰·希尔德布兰德博士领导的项目的主要目标是测试一个假设，即来自嵌入云层的恒星的辐射或来自外部恒星辐射场的辐射穿透云层的辐射强烈地促进了负责热发射的颗粒的磁对准。第二个目标是确定恒星形成区域的磁场特性。这些调查使用了位于夏威夷莫纳克亚的加州理工大学亚毫米天文台上的芝加哥大学偏振仪，也就是众所周知的赫兹。该项目由银河天文计划资助。*

AST 9987441HildebrandTechniques of far-infrared polarimetry developed at the University of Chicago have made it possible to produce maps of polarization at hundreds of points in individual clouds in our Galaxy. Maps of magnetic field lines in these clouds can be inferred by rotating the polarization vectors through 90 degrees. The principal objective of this project, led by Dr. Roger Hildebrand, is to test the hypothesis that radiation from stars embedded in clouds or radiation penetrating the clouds from the external stellar radiation field strongly facilitates magnetic alignment of the grains that are responsible for the thermal emission. A second objective is to determine the properties of magnetic fields in star forming regions. These investigations use the University of Chicago polarimeter, known as Hertz, on the Cal Tech Submillimeter Observatory on Mauna Kea, Hawaii. This project is funded through the Galactic Astronomy Program.***