Understanding the Long-term Evolution of Tidal Disruption Events

了解潮汐破坏事件的长期演变

基本信息

批准号：
2006684
负责人：
Eric Coughlin
金额：
$ 29.17万
依托单位：
Syracuse University
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2020
资助国家：
美国
起止时间：
2020-09-01 至 2024-08-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=2006684&HistoricalAwards=false
关键词：
Understanding Long term Evolution Tidal

项目摘要

Supermassive black holes (SMBHs) are fundamental to the evolution of the Universe and reside at the center of nearly every galaxy, but their statistics (e.g., distribution of masses) are not well constrained due to observational difficulties. Tidal disruption events (TDEs) – which occur when a star is destroyed by the immense gravitational field of a SMBH – illuminate the central regions of an otherwise-quiescent galaxy and provide a unique means of overcoming this difficulty. Nevertheless, our theoretical understanding of the long-term evolution of the debris from TDEs is underdeveloped, which restricts our ability to infer SMBH properties from TDE observations. A research group at Syracuse University will use state of the art numerical simulations and develop new models to study the long-term evolution of TDEs. The principal investigator will also work with a professional artist and teacher at a high school in New York to create new and innovative teaching and learning tools, which combine art and science to teach both of these subjects. These science and art modules will be developed and taught initially at the high school level, and will be transformed into complete and standalone units, which can be downloaded by any teacher across the globe. This work will significantly advance the teaching of science and art in underdeveloped and underfunded schools, and will thereby offer students in those areas a unique opportunity to learn and succeed. Black holes form the basis for many of the well-established theories governing, for example, the formation of the first galaxies, the reionization of the Universe, and the hierarchical model of galaxy growth. These theories will remain largely unconstrained, however, until the properties of black holes can be firmly established. By simulating tidal disruption events and tying the results to observations, the group will enhance the understanding of variability in TDEs, better constrain the salient features of TDE light curves, and provide direct insight into the nature of stellar cores from partial TDEs. The results of this analysis are essential for understanding the thousands of tidal disruption events that will be observed by the Vera Rubin Observatory. In addition, the physical evolution of tidally disrupted stars shares many similarities with other astrophysical systems, including compact object mergers and rapidly rotating stars. The results of these analyses and the research methodologies are therefore directly applicable to a broad range of astrophysical problems.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.

超大质黑洞（SMBH）是宇宙进化的基础，几乎居住在每个星系的中心，但是由于观察到的困难，它们的统计数据（例如，群众的分布）并没有很好地限制。潮汐破坏事件（TDE）（TDES）发生在恒星被SMBH的巨大引力场破坏时，它阐明了一个原本差异的星系的中央区域，并提供了克服困难的独特含义。然而，我们对TDE碎片长期演变的理论理解尚未发育，这限制了我们从TDE观察结果中推断出SMBH特性的能力。锡拉丘兹大学的研究小组将使用最先进的数值模拟，并开发新的模型来研究TDE的长期演变。首席调查员还将与纽约一所高中的专业艺术家和老师合作，创建新的，创新的教学工具，这些教学工具结合了艺术和科学来教授这两个学科。这些科学和艺术模块将最初在高中级别开发和教授，并将转变为完整的独立单位，可以由全球任何老师下载。这项工作将大大提高欠发达和资金不足的学校的科学和艺术教学，从而为这些领域的学生提供一个独特的学习和成功机会。黑洞构成了许多良好理论的基础，例如，第一个星系的形成，宇宙的电源和星系生长的分层模型。这些理论将在很大程度上不受限制，但是，直到首先建立黑洞的性质为止。通过模拟潮汐破坏事件并将结果与观测联系在一起，该小组将增强对TDE的可变性的理解，更好地限制TDE光曲线的显着特征，并直接从部分TDES中对恒星核心的性质进行直接见解。该分析的结果对于理解Vera Rubin天文台将观察到的数千种潮汐破坏事件至关重要。此外，潮汐恒星的物理进化与其他天体物理系统（包括紧凑的对象合并和快速旋转的恒星）具有许多相似之处。因此，这些分析和研究方法的结果直接适用于广泛的天体物理问题。该奖项反映了NSF的法定任务，并使用基金会的知识分子优点和更广泛的影响审查标准，被认为是通过评估来获得的支持。

项目成果

期刊论文数量（25）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

On the Impact of Relativistic Gravity on the Rate of Tidal Disruption Events

论相对论引力对潮汐破坏事件发生率的影响

DOI：
10.3847/1538-4357/ac85b3
发表时间：
2022
期刊：
The Astrophysical Journal
影响因子：
0
作者：
Coughlin, Eric R.;Nixon, C. J.
通讯作者：
Nixon, C. J.

Stellar Revival and Repeated Flares in Deeply Plunging Tidal Disruption Events

DOI：
10.3847/2041-8213/ac5118
发表时间：
2022-01
期刊：
The Astrophysical Journal Letters
影响因子：
0
作者：
C. Nixon;E. Coughlin
通讯作者：
C. Nixon;E. Coughlin

Short Gamma-Ray Bursts and the Decompression of Neutron Star Matter in Tidal Streams

短伽马射线暴和潮汐流中中子星物质的减压

DOI：
10.3847/2041-8213/abae6f
发表时间：
2020
期刊：
The Astrophysical Journal
影响因子：
0
作者：
Nixon, C. J.;Coughlin, Eric R.;Pringle, J. E.
通讯作者：
Pringle, J. E.

Simulated optical light curves of super-Eddington tidal disruption events with ZEBRA flows

使用 ZEBRA 流模拟超级爱丁顿潮汐破坏事件的光学光曲线

DOI：
10.1093/mnras/stac3073
发表时间：
2022
期刊：
Monthly Notices of the Royal Astronomical Society
影响因子：
4.8
作者：
Eyles-Ferris, R. A. J.;Starling, R. L. C.;O’Brien, P. T.;Nixon, C. J.;Coughlin, Eric R.
通讯作者：
Coughlin, Eric R.

The dynamics of debris streams from tidal disruption events: exact solutions, critical stream density, and hydrogen recombination

潮汐破坏事件产生的碎片流动力学：精确解、临界流密度和氢重组