Gravitational Wave Astronomy And Numerical Relativity

As ground‑based gravitational‑wave detectors continue to uncover an increasing

number of novel and significant gravitational‑wave events, gravitational‑wave

astronomy is developing at a rapid pace. Coupled with the successful missions

of LISA Pathfinder, Taiji‑1 and Tianqin‑1, a growing number of nations

and research teams are ramping up investment in space‑based gravitational‑wave

detection. At present, the European‑American LISA space gravitational‑wave

mission has been formally approved. China’s Taiji and Tianqin programmes,

together with Japan’s DECIGO, are also being actively advanced. Against

this backdrop of fruitful cooperation and competition among these four

projects, space‑based gravitational‑wave detectors are expected to commence

operation in ten years’ time. Gravitational‑wave theoretical templates

constitute a vital theoretical foundation for gravitational‑wave data

processing, while numerical relativity serves as the core technique for

constructing such templates. This report will present to the audience

the recent and future advances in gravitational‑wave astronomy, as well

as numerical‑relativity techniques and their role in gravitational‑wave

data analysis.

曹周键，北京师范大学教授，国家重点研发计划项目首席，专门从事引力波天文学特别是数值相对论的研究。建立和改进了数值相对论算法Z4c，该算法被国际众多数值相对论小组使用并被日本专家写入数值相对论教科书；建立了椭圆轨道双黑洞完备引力波模板SEOBNRE，该模板被LIGO模板构建首席科学家评价为相关的首个模板；

发展了引力波模板构建和数据分析的AI方法。