Probing black hole formation through the observed population of binary black hole mergers

通过观测到的双黑洞合并种群探索黑洞的形成

基本信息

批准号：
2893052
负责人：
金额：
--
依托单位：
CARDIFF UNIVERSITY
依托单位国家：
英国
项目类别：
Studentship
财政年份：
2023
资助国家：
英国
起止时间：
2023 至无数据
项目状态：
未结题

来源：
https://gtr.ukri.org/projects?ref=studentship-2893052
关键词：
Probing black hole formation through

项目摘要

Following the first observation of gravitational waves in 2015, we have now observed close to 100 signals from merging black holes and neutron stars. These observations have enabled us to begin to identify, often unexpected, properties in the black hole population. For example, we are beginning to see the emergence of structure in the observed black hole mass distribution, as well as hints that black hole masses and spins are correlated.This PhD project involves developing and improving techniques to infer the properties of the black hole population from the observed gravitational wave signals. In spring 2023, the LIGO, Virgo and KAGRA observatories will begin their fourth observing run, which is expected to yield several new observations of black hole mergers each week. This PhD project will make use of these observations, to more accurately extract astrophysical distributions of black holes in the universe. It will then investigate how better understanding the mass, mass-ratio, spin and eccentricity of black holes in merging binaries can be used to probe the astrophysical formation mechanisms of black hole binaries. Towards the end of the PhD, the observatories are expected to begin their fifth observing run, with daily observations of gravitational wave signals. This will provide an opportunity to test any predictions that have been made and further improve our astrophysical understanding of black holes.

继 2015 年首次观测到引力波之后，我们现在已经观测到了近 100 个来自黑洞和中子星合并的信号。这些观察使我们能够开始识别黑洞群体中常常意想不到的特性。例如，我们开始在观测到的黑洞质量分布中看到结构的出现，以及黑洞质量和自旋相关的暗示。这个博士项目涉及开发和改进技术来推断黑洞群体的特性来自观测到的引力波信号。 2023 年春季，LIGO、Virgo 和 KAGRA 天文台将开始第四次观测，预计每周都会产生一些关于黑洞合并的新观测结果。该博士项目将利用这些观测结果，更准确地提取宇宙中黑洞的天体物理分布。然后，它将研究如何更好地了解合并双星中黑洞的质量、质量比、自旋和偏心率，以探索黑洞双星的天体物理形成机制。在博士学位即将结束时，天文台预计将开始第五次观测，每天观测引力波信号。这将为检验已经做出的任何预测提供机会，并进一步提高我们对黑洞的天体物理学理解。