Collaborative Research: A Systematic and Comprehensive Study of Black Hole-Driven Turbulence in Massive Galactic Systems

合作研究：大规模星系系统中黑洞驱动的湍流的系统综合研究

• 批准号: 2107735
• 负责人: Yuan Li
• 金额: $ 28.27万
• 依托单位: University of North Texas
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2021
• 资助国家: 美国
• 起止时间: 2021-09-01 至 2024-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2107735&HistoricalAwards=false
• 关键词: Collaborative; Research; Systematic; Comprehensive; Study

In order to prevent the immediate conversion of a galaxy’s total gas supply into stars, a feedback mechanism must exist to slow down star formation. One promising candidate is the injection of turbulence into a galaxy’s supply of gas by a super-massive black hole. This research team has developed a technique to measure gas turbulence in systems hosting giant central black holes and will directly evaluate the viability of this mechanism using a large sample of galaxies. The team will work with artists/graphic designers to integrate their work into a series of freely available planetarium shows, mentor under-represented groups in STEM research, support a postdoc and a graduate student, and introduce undergraduates to astronomical research. This project is jointly funded by MPS/AST and the Established Program to Stimulate Competitive Research (EPSCoR). This project will deliver a more complete view of the “feedback” provided by accreting SMBHs, leading to a better understanding of the black hole-host galaxy relation. More specifically, it will directly probe the energetics of the intra-cluster, circum-galactic, and interstellar media of massive early-type galaxies. The origin of turbulence, the coupling between hot and cold gas, and the microscopic physics will be revealed through the gas kinematics of these systems at different mass scales using X-ray (Chandra), visible (VLT/MUSE), and sub-millimeter (ALMA) observations. The innovative technique of studying the velocity structure of multi-phase filaments has the potential to be a more direct and accurate way to probe turbulent gas motion, vis-a-vis X-ray surface brightness fluctuation analysis, resonant scattering analysis, and even the direct X-ray line width measurement with Hitomi. This project will be a pathfinder for the calorimeter-based X-ray observatories of the next generation such as XRISM, Athena-XIFU, and Lynx.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.

为了防止银河系的总气体供应直接转换为恒星，必须存在一种反馈机制，以减慢恒星形成。一个承诺的候选人是将湍流注射到银河系中，由超级质量黑洞注射到银河系的供应中。该研究团队已经开发了一种技术来测量托管巨型中央黑洞的系统中的燃气湍流，并将使用大量星系直接评估该机制的可行性。团队将与艺术家/图形设计师合作，将其作品整合到一系列免费的可用的天文馆表演中，精神上代表性不足的STEM研究，支持后DOC和研究生，并将本科生介绍给天文学研究。该项目由国会议员/AST共同资助，以刺激竞争研究（EPSCOR）的既定计划。该项目将对积累SMBH提供的“反馈”提供更完整的视图，从而更好地了解黑洞宿主星系关系。更具体地说，它将直接探测大规模早期型星系的群内，圆与半乳酸和星际介质的能量。使用X射线（Chandra），可见光（VLT/Muse）和亚毫米（ALMA）观测值，将通过这些系统的气体运动学来揭示湍流的起源，热气和冷气之间的耦合以及微观物理学的耦合。研究多相丝的速度结构的创新技术具有更直接，准确的方法，用于探测湍流气体运动，Vis-A-VIS X射线表面亮度波动分析，谐振散射分析，甚至具有持有的直接X射线线宽度测量。该项目将是基于量热仪的X射线观察的探路者，例如XRISM，Athena-Xifu和Lynx。该奖项反映了NSF的法定任务，并通过使用基金会的知识分子优点和更广泛的影响审查标准来评估NSF的法定任务。

项目成果

The nature of the motions of multiphase filaments in the centers of galaxy clusters

星系团中心多相丝运动的本质

• DOI: 10.3389/fspas.2023.1138613
• 发表时间: 2023
• 期刊: Frontiers in Astronomy and Space Sciences
• 影响因子: 3
• 作者: Ganguly, Shalini;Li, Yuan;Olivares, Valeria;Su, Yuanyuan;Combes, Francoise;Prakash, Sampadaa;Hamer, Stephen;Guillard, Pierre;Ha, Trung
• 通讯作者: Ha, Trung

Numerical Investigation of Dynamical and Morphological Trends in Relativistic Jets

相对论性喷流动力学和形态趋势的数值研究

• DOI: 10.3847/1538-4357/ac7e42
• 发表时间: 2022
• 期刊: The Astrophysical Journal
• 作者: Mandal, Soham;Duffell, Paul C.;Li, Yuan
• 通讯作者: Li, Yuan

Turbulence in Milky Way Star-forming Regions Traced by Young Stars and Gas

• DOI: 10.3847/1538-4357/ac76bf
• 发表时间: 2022-04
• 期刊: The Astrophysical Journal
• 作者: T. Ha;Yuan Li;M. Kounkel;Siyao Xu;Hui Li;Yonggang Zheng

Turbulence in the tail of a jellyfish galaxy

水母星系尾部的湍流

• DOI: 10.1093/mnras/stad874
• 发表时间: 2023
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: Li, Yuan;Luo, Rongxin;Fossati, Matteo;Sun, Ming;Jáchym, Pavel
• 通讯作者: Jáchym, Pavel