EoR-Spec: Revealing the reionization of the Universe with CII intensity mapping

EoR-Spec：通过 CII 强度映射揭示宇宙的再电离

• 批准号: 2009767
• 负责人: Gordon Stacey
• 金额: $ 96.14万
• 依托单位: Cornell University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2020
• 资助国家: 美国
• 起止时间: 2020-08-01 至 2024-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2009767&HistoricalAwards=false
• 关键词: EoR; Spec; Revealing; reionization; Universe

This project will map the formation and evolution of galaxies and the large-scale structure of the Universe. The team will design, build and use an imaging spectrometer, which is referred to as EoR-Spec. EoR-Spec will map the far-infrared spectral line of singly ionized carbon. This carbon line traces where stars formed and allows mapping of the history of star formation over a large fraction of the universe’s existence. Such mapping also reveals the underlying distribution of matter in the universe. This instrument will utilize a new optimized telescope for this task located on an 18,400 foot mountain in northern Chile. This program provides a training ground for both graduate and undergraduate students. The PI and Co-I have trained, or are training, many PhDs and undergraduates including female and underrepresented minority researchers. This program seeks to develop an instrument to study the evolution of star formation in galaxies from the Epoch of Reionization (EoR), when the first galaxies were forming to near “Cosmic Noon”. This is done by mapping the aggregate 158 micron [CII] line emission over large regions. Since the [CII] line tracks star formation, and star formation occurs at gravitational over-densities, this [CII] line intensity mapping traces the cosmic star formation rate. It also illuminates the underlying and evolving Cosmic Web. To make such measurements, the team will build EoR-Spec. This instrument will deploy on the 6 meter aperture Cerro Chajnantor Atcama Telescope (CCAT-prime), which is located at 5600m elevation in northern Chile and is expected to see first light in late 2021. The science is enabled by CCAT-prime and a combination of state-of-the-art technologies: broad-band Fabry–Pérot interferometer (FPI) etalons based on silicon substrate mirrors with metamaterial antireflection coatings and large format Kinetic Inductance Detector (KID) arrays. The proposers have trained, or are training 20 PhDs and 80 undergraduates. About half of these are female and about 10 are underrepresented minority (URM) researchers. Students from local K-12 schools will visit team laboratories, and local K-12 schools will be visited by team scientists. The team also plans Virtual Lab Visits and summer student workshops on instrumentation and science.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

该项目将绘制星系的形成和演化以及宇宙的大尺度结构。 该团队将设计，建造和使用成像光谱仪，这是被称为EoR-Spec。EoR-Spec将映射单离子化碳的远红外光谱线。 这条碳线描绘了恒星形成的地方，并允许绘制宇宙存在的大部分时间里星星形成的历史。 这种映射也揭示了宇宙中物质的潜在分布。 该仪器将利用一台新的优化望远镜来完成这项任务，该望远镜位于智利北方一座18，400英尺的山上。 该计划为研究生和本科生提供了一个培训基地。 PI和Co-I已经培训或正在培训许多博士和本科生，包括女性和代表性不足的少数民族研究人员。该方案旨在开发一种仪器，研究从再电离时代（第一批星系形成时）到“宇宙正午”附近星系中星星形成的演变。 这是通过在大区域上映射聚合的158微米[CII]线发射来完成的。由于[CII]线跟踪星星的形成，而星星的形成发生在引力超密度下，因此[CII]线强度映射跟踪宇宙星星的形成速率。 它还阐明了潜在的和不断发展的宇宙网络。为了进行这样的测量，该团队将建造EoR-Spec。该仪器将部署在6米口径的Cerro Chajnantor Atcama望远镜（CCAT-prime）上，该望远镜位于智利北方海拔5600米处，预计将于2021年底看到第一束光。该科学由CCAT-prime和最先进技术的组合实现：宽带法布里-珀罗干涉仪（FPI）标准具，基于具有超材料涂层的硅衬底反射镜和大格式动态电感检测器（KID）阵列。 提案人已经培训或正在培训20名博士和80名本科生。其中约一半是女性，约10人是代表性不足的少数民族（URM）研究人员。来自当地K-12学校的学生将参观团队实验室，当地K-12学校将由团队科学家参观。 这个奖项反映了NSF的法定使命，并通过使用基金会的智力价值和更广泛的影响审查标准进行评估，被认为值得支持。