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Astrophysics with populations of binary black holes

双黑洞群的天体物理学

基本信息

批准号：
2604872
负责人：
金额：
--
依托单位：
University of Glasgow
依托单位国家：
英国
项目类别：
Studentship
财政年份：
2021
资助国家：
英国
起止时间：
2021 至无数据
项目状态：
未结题

来源：
https://gtr.ukri.org/projects?ref=studentship-2604872
关键词：
Astrophysics populations binary black holes

项目摘要

Since the first direct detection of gravitational waves in 2015 by the STFC-funded Laser Interferometer Gravitational-Wave Observatory (LIGO), gravitational-wave astronomy has revolutionised our understanding of black hole binaries. Over the coming years, the population of gravitational wave observations will explode, with hundreds of observations of binary black holes. Using this rapidly growing gravitational-wave catalogue, it will be possible to infer the population properties, such as the distribution of black hole masses and spins across a range of redshifts, while cross-correlation with galaxy catalogues can enable inference of the Hubble constant. This project will aim to construct and apply a Bayesian hierarchical inference scheme to binary black hole observations, building upon both the current techniques and Glasgow's leading international expertise in gravitational-wave analysis. Using these cutting-edge population results, it will be possible to place unprecedented constraints of the currently uncertain physics of binary stellar evolution as well as the evolution of the Universe. The final goal of this project will be to compare our gravitational-wave observations to the latest binary population synthesis models to complete a comprehensive, multidimensional inference of the parameters which describe the physics of binary evolution in an evolving Universe, and hence reveal the mysteries of binary black hole formation across cosmic time.

自2015年STFC资助的激光干涉引力波天文台（LIGO）首次直接探测到引力波以来，引力波天文学已经彻底改变了我们对黑洞双星的理解。在接下来的几年里，引力波观测的数量将爆炸式增长，对二元黑洞的观测将达到数百个。利用这个快速增长的引力波目录，将有可能推断出人口属性，例如黑洞质量和自旋在红移范围内的分布，而与星系目录的互相关可以推断出哈勃常数。该项目的目标是在现有技术和格拉斯哥在引力波分析方面领先的国际专业知识的基础上，构建并应用贝叶斯分层推理方案对二元黑洞进行观测。使用这些尖端的人口结果，将有可能对目前不确定的双星演化物理学以及宇宙演化进行前所未有的限制。该项目的最终目标是将我们的引力波观测结果与最新的双星总体合成模型进行比较，以完成对描述演化宇宙中双星演化物理学的参数的全面，多维推断，从而揭示跨宇宙时间的双星黑洞形成的奥秘。