Using the Sunyaev-Zel'dovich Effect to Measure AGN Feedback

使用 Sunyaev-Zeldovich 效应测量 AGN 反馈

• 批准号: 1407835
• 负责人: Evan Scannapieco
• 金额: $ 49.82万
• 依托单位: Arizona State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2014
• 资助国家: 美国
• 起止时间: 2014-08-15 至 2018-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1407835&HistoricalAwards=false
• 关键词: Using; Sunyaev; Zel; dovich; Effect

This program will use the Sunyaev-Zeldovich (SZ) effect (scattering of certain kinds of light by electrons) to assess, through data analysis and simulations, the impact of quasars on heating the gas between galaxies and influencing galaxy evolution. Broader impacts of the work include training of undergraduate and graduate students. The project will also include a significant component targeted at communicating the work to the general public. At the national level, Dr. Scannapieco will continue to contribute to popular science journals such as Scientific American, and present lectures at REU programs. At the local level, he will give regular public lectures, which will be coordinated through the Mars Education Project (http://marsed.asu.edu).The SZ effect occurs when inverse Compton scattering increases the energy of cosmic microwave background (CMB) photons passing through hot, dense gas. In this way the SZ effect acts as a calorimeter, indicating exactly how much energy was added to the intergalactic medium and when. Dr. Scannapieco will employ stacking of public archival data from the South Pole Telescope (SPT), analyzing a suite of simulations using three codes, and making targeted observations to determine the way that energy deposits from active nuclei affect galaxy evolution.

该计划将利用Sunyaev-Zeldovich（SZ）效应（电子对某些类型的光的散射），通过数据分析和模拟评估类星体对星系之间气体加热和影响星系演化的影响。这项工作的更广泛影响包括培训本科生和研究生。该项目还将包括一个重要组成部分，旨在向公众宣传这项工作。在国家一级，Scannapieco博士将继续为《科学美国人》等科普期刊撰稿，并在REU项目中讲课。 在地方一级，他将定期举办公开讲座，这些讲座将通过火星教育项目（http：//marsed.asu.edu）进行协调。当逆康普顿散射增加宇宙微波背景（CMB）光子穿过热的致密气体的能量时，就会发生SZ效应。 这样，SZ效应就像一个量热计，准确地指示出有多少能量被添加到星系际介质中，以及何时被添加。 Scannapieco博士将使用南极望远镜（SPT）的公共档案数据进行叠加，使用三个代码分析一套模拟，并进行有针对性的观察，以确定来自活跃核的能量沉积影响星系演化的方式。