Studies of Black Hole Binary Systems Using Time-Domain Perturbation Theory

利用时域微扰理论研究黑洞双星系统

• 批准号: 2010685
• 负责人: Gaurav Khanna
• 金额: $ 7.54万
• 依托单位: University of Massachusetts, Dartmouth
• 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 2020-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2010685&HistoricalAwards=false
• 关键词: Studies; Black; Hole; Binary; Systems

The emergent field of gravitational wave astronomy is undergoing a major transformation as a result of the now-routine detections of gravitational waves from a black hole and neutron star binary systems by the US LIGO detector alongside other international observatories. Observations of these waves from compact binary systems will be used to obtain additional information about the most mysterious objects in the Universe. LIGO has also generated significant spin-off technologies, and helped direct public and youth attention towards STEM disciplines. This research project aids in the development of the theory-based science 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 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. Previous research projects by the PI have been discussed in the general media, and this work also has great potential at being successful for outreach to the general public. This research project will contribute to a number of challenging and important problems in the area of gravitational physics. The main objective is the development and application of an advanced computational model for the gravitational wave emission from a black hole binary system using point-particle perturbation theory. Significant contributions will be made to the development of fast and accurate models (effective-one-body, surrogate and other models) for gravitational waveform generation, that will positively impact the data analysis capabilities of current and future gravitational wave detectors (such as LIGO, next generation and even future space-borne missions, such as LISA). In addition, the planned work will bring about a much better understanding of the late-stage quasi-normal phase radiation from black hole binary systems. The project will also contribute to the gravitational wave data-analysis effort via the open and public Einstein@Home project. All the research activities in the context of this project will involve students and collaborations with other US and European research groups.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.

由于美国LIGO探测器与其他国际天文台一起对黑洞和中子星星双星系统的引力波进行了常规探测，引力波天文学的新兴领域正在经历一场重大变革。从紧凑的双星系统中观测这些波将用于获得有关宇宙中最神秘物体的额外信息。LIGO还产生了重要的副产品技术，并帮助引导公众和青年对STEM学科的关注。该研究项目有助于发展基于理论的科学，不仅在LIGO的使命中，而且在下一代探测器中发挥着非常关键的作用。主要目标是利用理论和计算技术来理解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一个重要的STEM领域的指导，培训和保留。学生发展的计算技能是高度“便携”的，因此将使他们能够获得各种职业选择，包括在国家需求很大的领域。公众参与者以前的研究项目已经在普通媒体上进行了讨论，这项工作也有很大的潜力成功地向公众推广。该研究项目将有助于解决引力物理领域的一些具有挑战性的重要问题。主要目标是利用点粒子微扰理论发展和应用一个先进的黑洞双星系统引力波发射计算模型。将为开发用于引力波形生成的快速准确模型（有效单体模型、替代模型和其他模型）做出重大贡献，这将对当前和未来引力波探测器（如LIGO、下一代甚至未来的空间任务，如丽莎）的数据分析能力产生积极影响。此外，计划中的工作将带来更好地了解黑洞双星系统的后期准正常相位辐射。该项目还将通过公开的Einstein@Home项目为引力波数据分析工作做出贡献。该项目的所有研究活动都将涉及学生以及与其他美国和欧洲研究团体的合作。该奖项反映了NSF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。