Frontiers in gravitational wave astronomy (FRoGW)

引力波改变了我们探索宇宙的方式。他们发现了新类型的天体物理物体(黑洞双星、黑洞-中子星双星)，这是我们想象但从未见过的。多亏了GWS，我们比以往任何时候都更接近于了解最密集恒星中的物质状态，引力的基本性质，我们的宇宙结构。这些进展，在不到十年的时间里，只有两个探测器，展示了GW天文学的独特潜力：探测最大引力的能力，同时，大规模天体物理。这个项目的目标是利用GW天文学的这两个优势，提供数据分析工具、分析结果和实用策略。在根本方面，该项目将解决有关两个黑洞合并的最后阶段(“环形关闭”)的紧迫问题。多亏了微扰理论的最新进展，人们终于有可能了解--除了主导秩序--黑洞在合并后是如何稳定下来的。这个项目将有助于填补我们对百年引力理论的理解中为数不多的缺失模块之一。这一点，以及将新物理学与旧天体物理学区分开来的实用策略，对于利用近期(2023+)和未来(2030年代)的全球观测至关重要。作为MSCA研究员，申请者将在诺丁汉重力中心(诺丁汉大学)接受重要的重力基本方面的培训。该中心的专业知识横跨引力、粒子物理和宇宙学，将是这一跨学科项目的理想环境。该项目的方法还借鉴了申请人在理论物理和天体物理、数据分析和数值方法方面的专业知识。加州理工学院的学术借调人员将完成前沿全球水资源研究所需的多方面培训，并将确保该项目对关键利益攸关方的影响，包括目前的全球水资源探测器。

Gravitational waves (GWs) have changed the way we explore the cosmo. They have uncovered new types of astrophysical objects (black hole binaries, black hole-neutron star binaries), which we had imagined but never seen. Thanks to GWs, we are closer than ever before to understanding the state of matter in the densest stars, the fundamental nature of gravity, the structure of our Universe.These advances, made in less then a decade with only two detectors, show GW astronomy's unique potential: the ability to probe gravity at its extreme and, at the same time, large-scale astrophysics.The goal of this project is to exploit both of GW astronomy's strengths, delivering data analysis tools, analytic results and practicalstrategies. On the fundamental side, the project will address burning questions about the final stage of the merging of two blackholes (the "ringdown"). Thanks to recent advances in perturbation theory, it is finally possible to understand - beyond leading order - how black holes settle down after a merger. This project will help fill-in one of the few missing blocks in the understanding of our century-old theory of gravity. This, together with practical strategies to distinguish new physics from old-fashioned astrophysics, will be essential to exploit near future (2023+) and future (2030s) GW observations.As an MSCA fellow, the applicant will receive crucial training in the fundamental aspects of gravity at the Nottingham Centre ofGravity (University of Nottingham). The Centre, whose expertise spans gravity, particle physics and cosmology, will be the idealenvironment for this interdisciplinary project. The project's approach draws also from the applicant's expertise in theoretical physicsand astrophysics, data analysis and numerical methods. An academic secondment at Caltech will complete the multifaceted trainingnecessary for cutting-edge GW research, and will ensure the project's impact on key stakeholders, including current GW detectors.