Large Scale Structure Probes of Cosmic Acceleration

宇宙加速大尺度结构探测器

• 批准号: 1516997
• 负责人: David Weinberg
• 金额: $ 24.87万
• 依托单位: Ohio State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2015
• 资助国家: 美国
• 起止时间: 2015-09-01 至 2019-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1516997&HistoricalAwards=false
• 关键词: Large; Scale; Structure; Probes; Cosmic

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.

该计划将解决宇宙学暗能量和替代重力模型使用宇宙结构的增长探针的约束。 这项工作的更广泛影响包括培训一名研究生，以及利用宇宙学启发的雕塑作为面向科学和艺术受众的公共宣传的基础。这项研究将联合收割机结合星系-星系透镜效应和星系团，以确定暗物质团的演化。使用PI开发的一种新方法，该提案还旨在通过观测莱曼α森林来测量中等红移的几何和暗物质分布。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引力。