Gravitational Wave Modeling Using Time-Domain Black Hole Perturbation Theory

使用时域黑洞微扰理论进行引力波建模

• 批准号: 2307236
• 负责人: Gaurav Khanna
• 金额: $ 12万
• 依托单位: University of Rhode Island
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2023
• 资助国家: 美国
• 起止时间: 2023-05-01 至 2025-04-30
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2307236&HistoricalAwards=false
• 关键词: Gravitational; Wave; Modeling; Using; Time

Observations of gravitational waves from a black hole and neutron star binary systems are now routine by the NSF's LIGO alongside other international detectors. Beyond learning about the most mysterious objects in the Universe, such efforts have generated significant spin-off technologies, and helped turn public and youth attention towards STEM disciplines. This research project aids in the development of the computational tools and the theory that plays a very critical role in not only LIGO’s mission, but also that of next generation detectors. The main objective is to understand important aspects of binary black hole systems using theoretical and computational techniques. The project includes support for students and therefore directly contributes to student mentorship, traineeship and retention in an important STEM area. The computational skills that students develop are highly “portable”, and therefore will allow them access to a variety of career options, including in areas of great national need.This award is about the development and application of the time-domain point-particle black hole perturbation theory approach that models the gravitational wave emission from large mass-ratio black hole binary systems. Significant contributions will be made to the development of approximate gravitational waveform models (such as data-driven “surrogate” models, the effective-one-body approach, and others), that will ultimately impact the data analysis effort of current and future detectors (such as LIGO/Virgo/KAGRA and future 3G detectors and space-borne missions). Additionally, collaborative work will be completed with the gravitational self-force and mathematical relativity communities, and progress will be made on a number of challenging and important problems in the area of gravitational physics.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.

现在，美国国家科学基金会的LIGO与其他国际探测器一起，对黑洞和中子星双星系统的引力波进行了常规观测。除了了解宇宙中最神秘的物体之外，这些努力还产生了重要的衍生技术，并帮助公众和年轻人将注意力转向STEM学科。这个研究项目有助于计算工具和理论的发展，这些工具和理论不仅在LIGO的任务中起着非常关键的作用，而且对下一代探测器的任务也起着至关重要的作用。主要目标是利用理论和计算技术了解双黑洞系统的重要方面。该项目包括对学生的支持，因此直接有助于学生在重要的STEM领域获得指导、培训和保留。学生们培养的计算技能是高度“便携”的，因此将允许他们获得各种各样的职业选择，包括在国家非常需要的领域。该奖项是关于时域点粒子黑洞摄动理论方法的发展和应用，该方法模拟了大质量比黑洞双星系统的引力波发射。将对近似重力波形模型的发展做出重大贡献（如数据驱动的“替代”模型，有效的单一体方法等），这将最终影响当前和未来探测器（如LIGO/Virgo/KAGRA和未来的3G探测器和太空任务）的数据分析工作。此外，将与引力自作用力和数学相对论团体合作完成工作，并将在引力物理领域的一些具有挑战性和重要的问题上取得进展。该奖项反映了美国国家科学基金会的法定使命，并通过使用基金会的知识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

Interplay between numerical relativity and black hole perturbation theory in the intermediate-mass-ratio regime

中间质量比状态下数值相对论与黑洞微扰理论之间的相互作用

• DOI: 10.1103/physrevd.108.044013
• 发表时间: 2023
• 期刊: Physical Review D
• 影响因子: 5
• 作者: Islam, Tousif

Interplay between numerical relativity and perturbation theory: Finite size effects

数值相对论和微扰理论之间的相互作用：有限尺寸效应

• DOI: 10.1103/physrevd.108.044012
• 发表时间: 2023
• 期刊: Physical Review D
• 影响因子: 5
• 作者: Islam, Tousif;Khanna, Gaurav
• 通讯作者: Khanna, Gaurav

Approximate relation between black hole perturbation theory and numerical relativity

黑洞微扰理论与数值相对论的近似关系

• DOI: 10.1103/physrevd.108.124046
• 发表时间: 2023
• 期刊: Physical Review D
• 影响因子: 5
• 作者: Islam, Tousif;Khanna, Gaurav
• 通讯作者: Khanna, Gaurav

Comparing Numerical Relativity and Perturbation Theory Waveforms for a Non-Spinning Equal-Mass Binary

比较非旋转等质量双星的数值相对论和微扰理论波形

• DOI: 10.3390/universe10010025
• 发表时间: 2024
• 期刊: Universe
• 影响因子: 2.9
• 作者: Islam, Tousif;Field, Scott E.;Khanna, Gaurav
• 通讯作者: Khanna, Gaurav