Cosmological tests of gravity using large-scale structure observations

在这个项目中，学生将改进以前的方法，利用星系团和星系团的宇宙学观测来测试重力。他们将使用最新的、最先进的流体动力学星系和星系团模拟来评估修正重力对各种星系和星系团可观测值的影响。一个特别的焦点将是通过模拟来量化星系-晕连接的影响和不确定性，并评估这种不确定性对使用红移空间星系群集来测试重力模型的影响。他们的目标是根据星团观测，如计数、SZ效应和星团气体/透镜剖面，对引力理论产生最新的约束。

In this project the student will improve on previous methods to test gravity using cosmological observations of galaxy clustering and clusters of galaxies. They will use new, state-of-the-art, hydrodynamical galaxy and cluster simulations to assess the impact of modified gravity on various galaxy and cluster observables. One particular focus will be quantifying the effect and uncertainty of galaxy-halo connection using simulations, and assessing the impact of such uncertainty on the use of redshift-space galaxy clustering to test gravity models. They will aim at producing updated constraints on gravity theories from cluster observations, such as number counts, SZ effect, and cluster gas/lensing profiles.