Mass Dependent Bias in the Local Universe

米勒教授和他的团队将研究星系团的空间分布，特别关注星系团大小的暗物质晕的偏向。这种偏向是在原始物质密度场的最大起伏中形成大量暗物质晕的结果。这导致了晕质量和星团本身的幅度之间的相关性。对偏差的观测约束是使用星系团进行高精度宇宙学的先决条件。该计划将发布一个大约1000个星系团的样本，这些星系团的质量得到了测量，并出现了很好的错误特征。这项工作的广泛影响包括培训一名研究生，为基于网络的天文学工具建立教程，这些工具带领非专业人员完成一些最伟大的天文发现，让非科学家自己发现宇宙的基本规律。

Professor Miller and his group will study the spatial distribution of galaxy clusters, paying specific attention to the bias of cluster-sized dark matter halos. Such a bias results from massive dark matter halos forming within the largest fluctuations in the primordial matter density field. This induces a correlation between the halo mass and the amplitude of the clustering itself. Observational constraints on bias are a prerequisite to high precision cosmology using galaxy clusters. The program will publish a sample of approximately 1000 clusters with measured masses and well characterized errors.Broader impacts of the work include training of a graduate student, building tutorials for web-based astronomy tools which lead non-specialists through some of the greatest astronomical discoveries, allowing non-scientists to discover for themselves the fundamental laws of the Universe.