Postdoctoral Fellowship: AAPF: Probing the Cosmic Dawn with the OVRO-LWA

博士后奖学金：AAPF：用 OVRO-LWA 探索宇宙黎明

• 批准号: 2303952
• 负责人: Ruby Byrne
• 金额: $ 33万
• 依托单位: Byrne, Ruby
• 依托单位国家: 美国
• 项目类别: Fellowship Award
• 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=2303952&HistoricalAwards=false
• 关键词: Postdoctoral; Fellowship; AAPF; Probing; Cosmic

Ruby Byrne is awarded an NSF Astronomy and Astrophysics Fellowship to carry out a program of research and education at the California Institute of Technology. Byrne will use emission from neutral hydrogen to study the Cosmic Dawn, the phase in cosmological history when stars and galaxies first formed. She will also lead a summer research program for high school students and undergraduates that will expose students to astronomical data analysis techniques and prepare them for careers in science.This project employs the OVRO-LWA, a radio array in California’s Owens Valley that operates at frequencies of 12-85 MHz. The upgraded OVRO-LWA Stage III array is sensitive to highly redshifted signals from neutral hydrogen’s 21 cm emission line, which trace the intergalactic medium during the Cosmic Dawn and Epoch of Reionization. Byrne will implement novel precision data analysis techniques to produce three key science results: (1) a measurement of the sky-averaged 21 cm spectrum, (2) the strongest constraints to date on the power spectrum of 21 cm fluctuations during the Cosmic Dawn, and (3) high-fidelity, polarized maps of the low-frequency radio sky. These results will illuminate the dynamics of early galaxy formationmand test models of cosmological evolution.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.

鲁比·伯恩（Ruby Byrne）被授予Nstrophysics奖学金，在TEC HNOLOGY进行研究和教育计划。该项目采用12-85 MHz的OVRO-LWA频率将实施新的精确数据分析，以产生三个关键的Scy-aver-21 cm频谱，这是迄今为止在宇宙黎明期间21 cm波动的最强限制。 NSF'SFLUTORTS值得支持Thalugh评估Usistellectu al功绩和更广泛的影响审查标准。