Mapping Dark Matter with Light: Stellar Bar Driven Substructure in the Milky Way Dark Matter Halo

用光映射暗物质：银河系暗物质晕中的恒星棒驱动的子结构

• 批准号: 2102185
• 负责人: Angela Collier
• 金额: $ 30万
• 依托单位: Collier, Angela C
• 依托单位国家: 美国
• 项目类别: Fellowship Award
• 财政年份: 2021
• 资助国家: 美国
• 起止时间: 2021-09-01 至 2022-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2102185&HistoricalAwards=false
• 关键词: Mapping; Dark; Matter; Light; Stellar

Angela Collier is awarded an NSF Astronomy and Astrophysics Postdoctoral Fellowship to conduct a program of research and education at the University of Colorado. Collier will perform theoretical calculations to predict the structure and flux of dark matter in the bar and near the center of the Milky Way. Results from this project will allow astronomers to understand how dark matter influences baryonic matter in barred galaxies. For the education component of this project, Collier will develop a planetarium show to improve the science outcomes and social-emotional development of pre-kindergarten and kindergarten students, and she will provide research experiences to undergraduate students.This project will investigate the role of stellar bar-driven substructure in dark matter and its consequences for the detection of dark matter in the Galaxy. Analytical calculations and numerical simulations undertaken in this project will predict the impact of dark matter trapped in the stellar bar on dark matter in the Galactic halo. The resultant insight into halo-bar coupling and dynamics will permit accurate predictions of indirect signatures to aid future astronomical searches for dark matter near the Galactic Center. More generally, it will advance our understanding of how dark matter bars are formed in galaxies.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.

安吉拉·科利尔获得美国国家科学基金会天文学和天体物理学博士后奖学金，在科罗拉多大学开展研究和教育项目。科利尔将进行理论计算，以预测酒吧和银河系中心附近暗物质的结构和通量。该项目的结果将使天文学家了解暗物质如何影响棒状星系中的重子物质。对于该项目的教育部分，科利尔将开发一个天文馆表演，以提高学前班和幼儿园学生的科学成果和社会情感发展，她还将为本科生提供研究经验。该项目将研究星棒驱动的子结构在暗物质中的作用及其对探测银河系暗物质的影响。该项目中进行的分析计算和数值模拟将预测困在恒星条中的暗物质对银河晕中暗物质的影响。由此产生的对晕棒耦合和动力学的深入了解将允许准确预测间接特征，以帮助未来对银河系中心附近暗物质的天文学搜索。 更广泛地说，它将增进我们对星系中暗物质条是如何形成的理解。该奖项反映了 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。

项目成果

A Lopsided Outer Solar System?

不平衡的外太阳系？

• DOI: 10.3847/1538-3881/ac2def
• 发表时间: 2021
• 期刊: The Astronomical Journal
• 作者: Zderic, Alexander;Tiongco, Maria;Collier, Angela;Wernke, Heather;Generozov, Aleksey;Madigan, Ann-Marie
• 通讯作者: Madigan, Ann-Marie

Bar-driven leading spiral arms in a counter-rotating dark matter halo

反向旋转暗物质晕中棒驱动的前旋臂

• DOI: 10.1093/mnras/stab2904
• 发表时间: 2021
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: Lieb, Emma;Collier, Angela;Madigan, Ann-Marie
• 通讯作者: Madigan, Ann-Marie