Polarimetry at the Caltech Submillimeter Observatory

加州理工学院亚毫米天文台的偏振测量

• 批准号: 9987441
• 负责人: Roger Hildebrand
• 金额: $ 19.06万
• 依托单位: University of Chicago
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-07-15 至 2003-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9987441&HistoricalAwards=false
• 关键词: Polarimetry; Caltech; Submillimeter; Observatory

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.***

由芝加哥大学开发的远红外偏振测量技术使得在我们银河系的单个云中产生数百个点的偏振图成为可能。 这些云中的磁力线图可以通过将极化矢量旋转90度来推断。 由Roger Hildebrand博士领导的这个项目的主要目标是检验一个假设，即来自嵌入云中的恒星的辐射或从外部恒星辐射场穿透云的辐射强烈地促进了负责热发射的颗粒的磁性排列。 第二个目标是确定星星形成区域的磁场特性。 这些调查使用芝加哥大学的旋光仪，也就是赫兹，在位于夏威夷莫纳克亚山的加州理工学院亚毫米波天文台。 该项目由银河天文学计划资助。