Collaborative Research: It's TIME! Mapping cosmic star formation history with CO and CII

合作研究：是时候了！

• 批准号: 2308042
• 负责人: James Bock
• 金额: $ 19.95万
• 依托单位: California Institute of Technology
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2023
• 资助国家: 美国
• 起止时间: 2023-09-01 至 2026-08-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2308042&HistoricalAwards=false
• 关键词: Collaborative; Research; TIME; Mapping; cosmic

This award supports observations and analysis with the Tomographic Ionized-carbon Mapping Experiment (TIME), an imaging spectrometer that will observe on the Arizona Radio Observatory 12-meter radio telescope at Kitt Peak. TIME will probe the evolution of our universe over cosmic time and deepen our understanding of astrophysics and cosmology by answering fundamental questions like how is gas evolving into ionizing sources, and how does that ionization trace with large-scale structure? TIME will map large portions of the sky in order to probe the early epochs of the universe by measuring the bright ionized carbon emission line from galaxies during the Epoch of Reionization (EoR) and by measuring carbon monoxide during the peak of star formation. The TIME team will continue to expand their existing efforts to open pathways for student experiential learning and train students from high school to graduate school in experimental techniques in astrophysics. These opportunities for students will bolster the preparation of the workforce for an increasingly complex and competitive world and address the need to increase participation from underrepresented groups in STEM. The data and publication of scientific results will contribute to our understanding of how structure evolved in our universe.TIME is a high-throughput millimeter-wave imaging spectrometer array designed to perform line intensity mapping. TIME will constrain the total [CII] emissivity during the Epoch of Reionization (EoR) by measuring [CII] clustering signals, and determine the cosmic abundance of molecular gas by measuring carbon monoxide (CO) intensity fluctuations at 0.5 z 2. TIME combines large light-gathering throughput with 32 novel waveguide spectrometers using 1,920 bolometers to observe between 183 to 326 GHz with spectral resolving power of 100. TIME has been deployed to the Arizona Radio Observatory 12m ALMA prototype antenna (ARO 12m) for an engineering run in 2019 and a commissioning run in 2022, during which the team demonstrated detector responsivity, optical performance, and noise suppression techniques. This award supports carrying out scientific operations through 10 months of winter-month telescope time spread over three years, developing and deploying a data reduction pipeline, and publishing scientific and technical findings from the program.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.

该奖项通过层析成像化碳映射实验（TIME）来支持观察和分析，这是一个成像光谱仪，将在基特峰的亚利桑那无线电观测站12米射程望远镜上观察。时间将通过回答基本问题（例如气体如何演变为电离来源）来探究我们宇宙在宇宙时间上的演变，并加深我们对天体物理学和宇宙学的理解，以及如何使用大型结构进行电离轨迹？时间将绘制天空的大部分，以探测宇宙的早期时代，通过测量电离时期（EOR）（EOR）的明亮电离碳发射线（EOR）的明亮电离碳发射线，并通过测量恒星形成峰期间测量一氧化碳。时间团队将继续扩大他们现有的努力，以开放学生体验式学习的途径，并从高中培训学生到研究生院的天体物理学实验技术。这些机会为学生提供了为越来越复杂和竞争的世界准备劳动力的准备，并解决了增加代表性不足的STEM参与的需求。科学结果的数据和发表将有助于我们理解结构在宇宙中的发展。时间是高通量毫米波成像光谱仪阵列，旨在执行线强度映射。时间将通过测量[CII]聚类信号来限制在重离（EOR）期间的总[CII]发射率，并通过在0.5 z 2上测量0.5 Z 2的碳一氧化碳（CO）强度波动来确定分子气体的宇宙丰度。具有光谱分辨能力为100的GHz。时间已部署到2019年的工程运行，并于2022年进行了调试，在此期间，该团队展示了探测器响应性，光学性能，光学性能和噪声抑制技术。该奖项支持在10个月的冬季望远镜时间内进行三年的10个月进行科学操作，开发和部署减少数据管道，并发布该计划的科学和技术发现。该奖项反映了NSF的法定任务，并被认为是通过基金会的智力功能和广泛影响的评估来审查CRITERIA的评估，并被认为是值得通过评估的支持。