Collaborative Research: Coordinated Surveys to Study the Nature of the Dark Energy.

合作研究：研究暗能量本质的协调调查。

• 批准号: 0506752
• 负责人: Christopher Stubbs
• 金额: --
• 依托单位: Harvard University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-07-15 至 2010-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0506752&HistoricalAwards=false
• 关键词: Collaborative; Research; Coordinated; Surveys; Study

AST-0506752StubbsOne of today's most pressing open issues is to understand the nature of the dark energy apparently responsible for the accelerating expansion of the Universe. This project will carry out a one hundred square degree multi-band optical survey of the southern sky, in conjunction with even deeper images of smaller fields, coordinated with a millimeter-wave survey that will map the cosmic microwave background (CMB) to detect galaxy clusters out to moderate redshifts. These coordinated surveys will enable the most precise cosmological study to date with galaxy clusters, and will enable complementary studies of the dark energy using supernova distances, cosmic shear, and the galaxy power spectrum. This research will use the NSF-supported Blanco telescope at the Cerro Tololo Interamerican Observatory, and the privately supported Magellan telescope, both operational in Chile, and the CMB data will come from the NSF-funded South Pole Telescope, currently under construction.The key science question of the dark energy has already engaged significant public interest. This research will leverage the scientific productivity of multiple NSF-funded facilities, break new ground in real-time image analysis and observing optimization, directly benefit future large surveys currently in the planning stages, and continue a tradition of graduate and undergraduate student participation.

AST-0506752 Stubbs当今最紧迫的开放问题之一是理解暗能量的本质，暗能量显然是宇宙加速膨胀的原因。 该项目将对南部天空进行一次100平方度的多波段光学勘测，并结合更深层次的较小区域图像，配合毫米波勘测，绘制宇宙微波背景图，以探测中等红移的星系团。 这些协调的调查将使迄今为止最精确的宇宙学研究与星系团，并将使暗能量的补充研究使用超新星距离，宇宙切变和星系功率谱。 这项研究将使用国家科学基金会资助的托洛洛山美洲天文台的布兰科望远镜和私人资助的麦哲伦望远镜，这两个望远镜都在智利运行，CMB数据将来自国家科学基金会资助的南极望远镜，目前正在建设中。暗能量的关键科学问题已经引起了公众的极大兴趣。 这项研究将利用多个NSF资助的设施的科学生产力，在实时图像分析和观察优化方面开辟新天地，直接有利于目前处于规划阶段的未来大型调查，并延续研究生和本科生参与的传统。