Galaxy Formation in Modified Gravity Cosmologies

该项目的目的是扩展GALFORM星系形成的半解析模型，以在修正的引力宇宙学中预测星系的形成和演化。这些模型与用广义相对论描述引力的标准模型是竞争的。引力定律的改变可能会改变暗物质晕的结构和旋转、暗物质晕的合并历史、气体冷却的速度、星系的动力学和恒星群的演化。该项目的结果将用于为DESI和欧几里得进行模拟星系调查。

The aim of this project is to extend the GALFORM semi-analytical model of galaxy formation to predict the formation and evolution of galaxies in a modified gravity cosmology. Such models are competitors to the standard model in which gravity is described by general relativity. A change to the law of gravity can potentially change the structure and spin of dark matter halos, the merger history of dark matter halos, the rate at which gas cools, the dynamics of galaxies and the evolution of their stellar populations. The results of the project will be used to make mock galaxy surveys for DESI and Euclid.