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

这个项目的目的是利用Sunyaev-Zeldovich （SZ）效应来观察星系团，这是宇宙微波背景辐射在通过热的星系团气体时的减少。该项目将使用绿岸望远镜（GBT）上的野马辐射热计相机，在90千兆赫以9角秒的分辨率制作高灵敏度群集图，这是SZ测量的最高分辨率。它将利用这种高分辨率和灵敏度来搜索冲击，寻找氦沉积的证据，并将SZ缩放关系的质量估计与基于弱透镜数据的质量估计进行比较。它还将为ALMA的后续工作进行毫米波星系高红移尾部的发现者调查。这项工作的更广泛影响包括培训本科生和研究生，为GBT开发高频能力，并为一般天文社区提供继续访问MUSTANG的机会。

The purpose of this project is to observe clusters of galaxies using the Sunyaev-Zeldovich (SZ) effect, which is the diminution of the Cosmic Microwave Background radiation as it passes through hot cluster gas. The project will use the MUSTANG bolometer camera on the Green Bank Telescope (GBT) to make high sensitivity cluster maps at 90 GHz with 9 arcsecond resolution, the highest ever for SZ measurements. It will exploit this high resolution and sensitivity to search for shocks, for evidence of helium sedimentation, and to compare mass estimates from SZ scaling relations to those based on weak lensing data. It will also carry out a finder survey for the high-redshift tail of millimeter-wave galaxies for ALMA follow-up.Broader impacts of the work include training of undergraduate and graduate students, developing high frequency capability for the GBT, and providing continued access to MUSTANG for the general astronomical community.