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

该项目将利用Sunyaev-Zeldovich （SZ）效应（某些类型的光被电子散射），通过数据分析和模拟来评估类星体对加热星系间气体和影响星系演化的影响。这项工作更广泛的影响包括培养本科生和研究生。该项目还将包括一个重要的组成部分，旨在将工作传达给公众。在国家层面，Scannapieco博士将继续为《科学美国人》（Scientific American）等科普期刊撰稿，并在REU的项目中发表演讲。在地方层面，他将定期进行公开讲座，这些讲座将通过火星教育计划（http://marsed.asu.edu）.The)进行协调，当逆康普顿散射增加宇宙微波背景（CMB）光子穿过高温致密气体的能量时，就会发生SZ效应。通过这种方式，SZ效应就像一个量热计，准确地指出了星系间介质中添加了多少能量以及何时添加的能量。斯坎纳皮科博士将利用南极望远镜（SPT）的公共档案数据进行堆叠，使用三种代码分析一套模拟，并进行有针对性的观察，以确定活动核的能量沉积影响星系演化的方式。

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.