Development of an Advanced Heterogeneous Array for Probing the High-Redshift Universe

开发用于探测高红移宇宙的先进异质阵列

• 批准号: 0096913
• 负责人: John Carlstrom
• 金额: $ 276.74万
• 依托单位: University of Chicago
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-05-01 至 2007-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0096913&HistoricalAwards=false
• 关键词: Development; Advanced; Heterogeneous; Array; Probing

ABSTRACTAST-0096913This program is to build and use an interferometric array of six 3.5m diameter radio telescopes to image the Sunyaev Zel'dovich (SZ) effect in clusters of galaxies. The array will be used to provide a new view of cosmic structure formation at high redshifts by taking a complete, redshift-independent inventory of galaxy clusters. It will obtain independent estimates of the Hubble Constant H0, the deceleration parameter q0, and the cosmological matter density WM. These measurements will then lead to independent constraints on the total energy density of the universe and the contribution from a cosmological constant. The new array, after its initial survey of clusters, will be used in conjunction with the Owens Valley Millimeter Array of six 10m antennas, and perhaps eventually as part of CARMA (Combined Array for Millimeter Astronomy), to form a heterogeneous array with many advantages for high spatial dynamic range imaging of general astronomical phenomena. After the SZ measurements are completed the array will be made available to the US astronomical community. ***

摘要-0096913该计划旨在建造并使用由六台直径为 3.5m 的射电望远镜组成的干涉阵列来对星系团中的 Sunyaev Zel'dovich (SZ) 效应进行成像。 该阵列将用于通过获取完整的、与红移无关的星系团清单，提供高红移下宇宙结构形成的新视图。 它将获得哈勃常数 H0、减速参数 q0 和宇宙物质密度 WM 的独立估计。 这些测量结果将导致对宇宙总能量密度和宇宙学常数的贡献的独立约束。新阵列在对星团进行初步勘测后，将与由六个 10m 天线组成的欧文斯谷毫米波阵列结合使用，并可能最终作为 CARMA（毫米天文学组合阵列）的一部分，形成一个具有许多优势的异构阵列，用于一般天文现象的高空间动态范围成像。 SZ 测量完成后，该阵列将提供给美国天文学界。 ***