Large Scale Structure Probes of Cosmic Acceleration

该计划将解决对宇宙学暗能量的限制，以及使用宇宙结构增长探测器的替代重力模型。这项工作的更广泛影响包括对研究生的培训，以及使用受宇宙启发的雕塑作为面向科学和艺术受众的公共宣传的基础。这项研究将把星系-星系透镜与星系团相结合，以确定暗物质团的演化。使用PI开发的一种新方法，该提议还旨在通过对莱曼-阿尔法森林的观测来测量中等红移时的几何形状和暗物质分布。最后，PI建议通过测量星系团的扩展质量分布来测试修正的重力。

This program will address constraints on cosmological dark energy and alternative gravity models using probes of the growth of cosmic structures. Broader impacts of the work include training of a graduate student, and the use of cosmologically inspired sculptures as a basis for public outreach aimed at both science- and art-oriented audiences. The research will combine galaxy-galaxy lensing with galaxy clustering to determine the evolution of dark matter clustering. Using a novel method developed by the PI, the proposal also aims at measuring the geometry and dark matter distribution at intermediate redshifts via observations of the Lyman-alpha forest. Finally, the PI proposes to test modified gravity by measuring the extended mass profile of galaxy clusters.