Collaborative Research: Ground-based Investigations Relevant to the Joint Dark Energy Mission

合作研究：与联合暗能量任务相关的地面调查

• 批准号: 0426486
• 负责人: Robert Kirshner
• 金额: $ 2万
• 依托单位: Harvard University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-07-01 至 2006-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0426486&HistoricalAwards=false
• 关键词: Collaborative; Research; Ground; based; Investigations

AST-0426486KirshnerThe Joint Dark Energy Mission (JDEM) has recently been created through a cooperative agreement between the National Aeronautics and Space Administration (NASA) and the Department of Energy (DOE) to detect and characterize dark energy and its influence on the cosmic expansion history. Since ground-based work will impact our understanding of dark energy during the next decade, prior to the launch of JDEM, the constraints which can be expected from such studies should play an explicit role in the requirements definition phase of JDEM. The present project will explore whether and how a ground-based observing campaign could in any way influence the design of, or anticipate any part of the results from, the JDEM. It will assess whether cross-calibration can be precise enough to obviate the need for optical detectors on JDEM, what new instrumentation might be necessary at ground-based facilities, and whether a weak lensing survey from space adds value.NASA, DOE, and NSF are all devoting significant resources toward detecting and characterizing dark energy, and these investigations provide an excellent opportunity for inter-agency cooperation. Although the NSF will not, and cannot, be involved directly in JDEM itself, the science questions affect the NSF-supported community, and this project will help to define their role.

AST-0426486Kirshner联合暗能量任务（JDEM）最近通过美国国家航空航天局（NASA）和能源部（DOE）之间的合作协议创建，旨在探测和表征暗能量及其对宇宙膨胀历史的影响。 由于地面工作将影响我们在未来十年内对暗能量的理解，因此在 JDEM 启动之前，此类研究中预期的约束应该在 JDEM 的需求定义阶段发挥明确的作用。 本项目将探讨地面观测活动是否以及如何以任何方式影响 JDEM 的设计或预测 JDEM 的任何部分结果。 它将评估交叉校准是否足够精确，以消除 JDEM 上光学探测器的需要，地面设施可能需要哪些新仪器，以及来自太空的弱透镜测量是否会增加价值。NASA、DOE 和 NSF都投入了大量资源来探测和表征暗能量，这些调查为机构间合作提供了绝佳的机会。 尽管 NSF 不会也不能直接参与 JDEM 本身，但科学问题会影响 NSF 支持的社区，该项目将有助于定义他们的角色。