High Resolution Observations of the Sunyaev-Zel'dovich Effect in Clusters of Galaxies at 90 GHz Using the GBT

星系团是宇宙中最大的引力束缚物体，为宇宙学提供了重要的测试，并为合并和活动星系核(AGN)爆发等事件提供了丰富的天体物理实验室。作为结构演化的示踪者，星系团是一种重要的宇宙学工具，该项目旨在直接测量星系团内介质中的压力分布，以促进我们对星系团物理的理解。该项目旨在利用100米绿岸望远镜(GBT)以前所未有的测绘速度、分辨率和天空覆盖来绘制90 GHz星系团中的Sunyaev-Zel‘dovich效应(SZE)。使用Mustang-1.5仪器，研究人员将在三个季节拍摄一组具有统计意义的X射线和SZE选定的大质量星系团样本，并将通过观测确定由于星团合并、活动星系核反馈和其他天体物理过程而导致的星团-质量/SZE可观测标度关系中的散布。在教育方面，首席研究人员还将通过将本科生和高中生纳入研究计划来帮助甚至运行远程观测课程，从而为他们提供宝贵的研究经验。

Clusters of galaxies are the largest gravitationally bound objects in the Universe, provide important tests of cosmology, and serve as rich astrophysical laboratories for events such as mergers and Active Galactic Nuclei (AGN) outbursts. As tracers of the evolution of structure, clusters of galaxies represent an important cosmological tool, and this project aims to directly measure the pressure profile in the intracluster medium of clusters to advance our understanding of cluster physics.This project aims to map the Sunyaev-Zel'dovich effect (SZE) in galaxy clusters at 90 GHz with the 100-meter Green Bank Telescope (GBT) with a combination of unprecedented mapping speed, resolution, and sky coverage. Using the MUSTANG-1.5 instrument, the investigators will image a statistically significant set of X-ray and SZE selected sample of massive clusters in three seasons and will observationally determine the scatter in cluster-mass/SZE observable scaling relations due to cluster mergers, AGN feedback, and other astrophysical processes.Educationally, the principal investigator will also provide valuable research experiences to undergraduate and high school students by bringing them into the research program to assist, and even run, remote observing sessions.