Eccentric Black Hole Mergers: Search and Interpretation with Gravitational Waves

偏心黑洞合并：用引力波进行搜索和解释

• 批准号: 2207661
• 负责人: Imre Bartos
• 金额: $ 5万
• 依托单位: University of Florida
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-07-01 至 2024-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2207661&HistoricalAwards=false
• 关键词: Eccentric; Black; Hole; Mergers; Search

The discovery of gravitational waves from two merging black holes opened a new window on the Universe. Nevertheless, despite ongoing new discoveries, the physical process that makes black holes merge is still not understood. The proposed research will probe this question of origin by targeting mergers that retain eccentric orbits observable through their gravitational wave emission. The project will develop a targeted algorithm optimized to find eccentric mergers to be used during LIGO/Virgo/KAGRA’s upcoming observing runs. These research activities will provide training for graduate students in modeling and data analysis, skillsets which are in great demand and of great benefit to society. In addition, members of the group will engage in outreach activities in order to educate and inspire the public about this new field of physics and astronomy.The first theme of the project is the enhancement of search sensitivity to eccentric mergers. This will be carried out using simulated eccentric gravitational waveforms and optimizing search parameters to detect these waveforms. The second theme of the project will be the characterization of this sensitivity. The reach of the search needs to be established for the full range of expected gravitational waveforms in order to enable the astrophysical interpretation of future detections. With these steps the project will help maximize the ability of the next LIGO/Virgo/KAGRA observing runs to elucidate the origin of newly detected black hole mergers.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.

从两个合并黑洞中发现引力波打开了宇宙的新窗口。然而，拼命持续的新发现，使黑洞合并的物理过程仍然尚不清楚。拟议的研究将通过针对通过其重力波发射可观察到的偏心轨道的合并来探讨这个起源问题。该项目将开发出优化的有针对性算法，以发现在Ligo/Pirgo/Kagra即将进行的观察者运行期间使用的偏心合并。这些研究活动将为研究生进行建模和数据分析，对社会有很大需求和巨大好处的技能提供培训。此外，该小组的成员将进行外展活动，以教育和激发公众关于这个新的物理和天文学领域。该项目的第一个主题是增强对偏心合并的搜索敏感性。这将使用模拟的偏心重力波形和优化的搜索参数来检测这些波形。该项目的第二个主题是这种灵敏度的表征。为了使未来检测的天体物理解释能够，需要为全部预期引力波形建立搜索的范围。通过这些步骤，该项目将有助于最大化下一个Ligo/处女座/Kagra观察的能力，以阐明新发现的黑洞合并的起源。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通过评估来诚实地支持。

项目成果

Detecting and Diagnosing Terrestrial Gravitational-Wave Mimics Through Feature Learning

• DOI: 10.1103/physrevd.107.062006
• 发表时间: 2022-03
• 期刊: ArXiv
• 作者: R. Colgan;Z. M'arka;Jingkai Yan;I. Bartos;John N. Wright;S. M'arka

Gravitational Wave Source Populations: Disentangling an AGN Component

• DOI: 10.3847/2041-8213/acbfb8
• 发表时间: 2023-01
• 期刊: The Astrophysical Journal Letters
• 作者: V. Gayathri;D. Wysocki;Y. Yang;V. Delfavero;R. O’Shaughnessy;Z. Haiman;H. Tagawa;I. Bartos