Gravitational wave fluxes on generic orbits in near-extreme Kerr spacetime:Higher spin and large eccentricity  

作　　者：Changkai Chen Jiliang Jing 

机构地区：[1]Department of Physics,Key Laboratory of Low Dimensional Quantum Structures and Quantum Control of Ministry of Education,Synergetic Innovation Center for Quantum Effects and Applications,Hunan Normal University,Changsha 410081,China

出　　处：《Science China(Physics,Mechanics & Astronomy)》2024年第11期16-28,共13页中国科学：物理学、力学、天文学（英文版）

基　　金：supported by the National Natural Science Foundation of China (Grant Nos.12035005,and 12122504);the National Key Research and Development Program of China (Grant No.2020YFC2201400)。

摘　　要：To accurately obtain the waveform template of gravitational waves, substantial computational resources and extremely high precision are often required. In a previous study, we employed the confluent Heun function to obtain an exact solution to the Teukolsky equation. This approach allowed us to efficiently and accurately calculate the gravitational wave flux for a particle in circular orbits around a Schwarzschild black hole. Building on this method, we now extend its application to calculate the asymptotic gravitational wave fluxes from a particle in generic orbits around a near-extreme Kerr black hole. Our extended method proves particularly effective in handling computational challenges associated with large eccentricities(e = 0.9), higher spins(a = 0.999), higher harmonic modes, and strong-field regions. The results we obtained significantly outperform those derived from the numerical integration method based on the Mano-Suzuki-Takasugi method.

关 键 词：gravitational wave fluxes exact solution Teukolsky equation near-extreme Kerr black hole 

分 类 号：P142.84[天文地球—天体物理]