Collaborative Research: Observing the Epoch of Reionization with the Murchison Wide field Array

合作研究：用默奇森宽场阵列观察再电离时代

• 批准号: 1410484
• 负责人: Miguel Morales
• 金额: $ 34.34万
• 依托单位: University of Washington
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2014
• 资助国家: 美国
• 起止时间: 2014-08-15 至 2017-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1410484&HistoricalAwards=false
• 关键词: Collaborative; Research; Observing; Epoch; Reionization

The investigators in this collaborative proposal will analyze low frequency radio data from the Murchison Widefield Array to detect the spatial power spectrum of fluctuations in the 21 cm signal caused by the first generation of stars and collapsed objects, during an era known as the Epoch of Reionization (EoR). Broader impacts of the work include training of graduate students and postdocs, and engagement of under-represented groups toward careers in science. Community outreach will be undertaken at local urban schools and tribal centers.The observations will have the sensitivity to measure the rise and fall of the EoR power spectrum, placing meaningful constraints on models of reionization and early star formation. These constraints will have impact on the astrophysics community and could influence how JWST observations are interpreted, constrain the optical depth of cosmic microwave background measurements, and aid our understanding of the early universe.

在这个合作提议中，研究人员将分析来自默奇森宽场阵列的低频无线电数据，以探测21厘米信号波动的空间功率谱，这些波动是由第一代恒星和坍缩天体在一个被称为再电离时代（EoR）的时代引起的。这项工作的更广泛影响包括培养研究生和博士后，以及让代表性不足的群体参与科学事业。将在当地城市学校和部落中心开展社区外展活动。观测结果将具有测量EoR功率谱上升和下降的灵敏度，为再电离和早期恒星形成模型提供有意义的约束。这些限制将对天体物理学界产生影响，并可能影响对JWST观测结果的解释，限制宇宙微波背景测量的光学深度，并有助于我们对早期宇宙的理解。