Exploring Aspects of Large Mass-Ratio Black Hole Binaries using Time-Domain Perturbation Theory

使用时域微扰理论探索大型质量比黑洞双星的各个方面

• 批准号: 1606333
• 负责人: Gaurav Khanna
• 金额: $ 2万
• 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: 2016
• 资助国家: 美国
• 起止时间: 2016-09-01 至 2017-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1606333&HistoricalAwards=false
• 关键词: Exploring; Aspects; Large; Mass; Ratio

This award supports research that will advance the science behind the emerging discipline of gravitational wave astronomy -- an area which the US is deeply invested in through the NSF LIGO project that recently made the first ever direct detection of gravitational waves, confirming Einstein's 100 year old prediction. This research area has had breakthrough advances, generated significant spin-off technologies, and generated strong public and youth attention towards STEM disciplines. This project focuses on the calculation of gravitational waves emitted from merging objects such as black holes or neutron stars. It includes undergraduate students in research and therefore directly contributes to student mentorship, traineeship and retention in a STEM area. The computational skills that students develop are highly portable, and open them up 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 thus this work has great potential at being successful for outreach to the general public. This proposal is about the development and application of a time-domain model for the gravitational wave emission from a large mass-ratio black hole binary system using point-particle perturbation theory. The planned work will significantly advance the approach with the goal of not only making major improvements to the capabilities of the time-domain model, but also contribute towards various scientific applications. Significant contributions will be made to the development of effective-one-body models and gravitational waveform generation, that will ultimately positively impact the data analysis of current and future detectors (such as LIGO and future space-borne missions). In addition, the planned work will bring about a better understanding of the plunge phase radiation and quasi-normal ringing in the context of decaying binary systems due to gravitational wave emission.

该奖项支持的研究将推动引力波天文学这一新兴学科背后的科学——美国通过NSF LIGO项目对这一领域进行了深入投资，该项目最近首次直接探测到引力波，证实了爱因斯坦100年前的预言。这一研究领域取得了突破性进展，产生了重要的衍生技术，并引起了公众和青少年对STEM学科的强烈关注。这个项目的重点是计算黑洞或中子星等合并物体发出的引力波。它包括从事研究的本科生，因此直接有助于学生在STEM领域的指导、培训和保留。学生们培养的计算技能是高度可移植的，并为他们提供了各种各样的职业选择，包括在国家需要的领域。PI以前的研究项目已经在一般媒体上讨论过，因此这项工作在成功地向公众推广方面具有很大的潜力。本文提出了一种基于点粒子摄动理论的大质量比黑洞双星引力波发射时域模型的建立与应用。计划中的工作将大大推进该方法，其目标不仅是对时域模型的能力进行重大改进，而且还将为各种科学应用做出贡献。将为有效的一体模型和重力波形生成的发展做出重大贡献，这将最终对当前和未来探测器（如LIGO和未来的太空任务）的数据分析产生积极影响。此外，计划中的工作将使人们更好地理解由于引力波发射而衰减的双星系统中的暴跌相辐射和准正态环。