Precision Data Analysis Software for Hydrogen Epoch of Reionization Measurements

用于再电离测量氢时代的精密数据分析软件

• 批准号: 1506024
• 负责人: Miguel Morales
• 金额: $ 25.22万
• 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: 2015
• 资助国家: 美国
• 起止时间: 2015-08-15 至 2019-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1506024&HistoricalAwards=false
• 关键词: Precision; Data; Analysis; Software; Hydrogen

One of the highest priority science questions in cosmology today is how hydrogen gas was "reionized" when the Universe was young (known as the Epoch of Reionization, or EoR). This reionization is predicted by the Big Bang theory of the evolution of the Universe, but little is known about how this physically happened. The investigator will further develop his Fast Holographic Deconvolution analysis software for the reduction of hydrogen gas EoR observations. Such observations have the potential 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 James Webb Space Telescope observations are interpreted, constrain the optical depth of cosmic microwave background measurements, and aid our understanding of the early universe. This award will provide funding for a postdoctoral research associate to work on making the software available and usable by the general EoR community. The grant will enable an advanced software pipeline for the international radio cosmology community, and will provide sponsorship of a workshop to train the community in its use.Broader impacts of the work include training of a postdoc, and the engagement of under-represented groups toward careers in science, which has been a hallmark of Morales' group at U Washington for a number of years.

当今宇宙学中最重要的科学问题之一是氢气在宇宙年轻时是如何“再电离”的（称为再电离时代，或EoR）。 这种再电离是由宇宙演化的大爆炸理论预测的，但人们对这一物理现象是如何发生的知之甚少。 研究人员将进一步开发他的快速全息去卷积分析软件，用于减少氢气EoR观测。 这样的观测有可能测量EoR功率谱的上升和下降，对再电离和早期星星形成的模型施加有意义的限制。这些限制将对天体物理学界产生影响，并可能影响詹姆斯·韦伯太空望远镜观测的解释，限制宇宙微波背景测量的光学深度，并帮助我们理解早期宇宙。 该奖项将为博士后研究助理提供资金，以使该软件可供一般EoR社区使用。 该赠款将为国际射电宇宙学界提供先进的软件管道，并将赞助一个研讨会，培训该界使用该软件。该工作的更广泛影响包括培训博士后，以及吸引代表性不足的群体从事科学职业，这多年来一直是莫拉莱斯在华盛顿大学团队的标志。

项目成果

Exploring the consequences of chromatic data excision in 21-cm epoch of reionization power spectrum observations

探索再电离功率谱观测的 21 厘米历元中彩色数据切除的后果

• DOI: 10.1093/mnras/stab3456
• 发表时间: 2021
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: Wilensky, Michael J.;Hazelton, Bryna J.;Morales, Miguel F.
• 通讯作者: Morales, Miguel F.

A map of diffuse radio emission at 182 MHz to enhance epoch of reionization observations in the Southern hemisphere

182MHz 的漫射无线电发射图，用于增强南半球再电离观测的时代

• DOI: 10.1093/mnras/stab3276
• 发表时间: 2021
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: Byrne, Ruby;Morales, Miguel F.;Hazelton, Bryna;Sullivan, Ian;Barry, Nichole;Lynch, Christene;Line, Jack L. B.;Jacobs, Daniel C.
• 通讯作者: Jacobs, Daniel C.