Blanchet Luc, Faye Guillaume, Henry Quentin, Larrouturou François, Trestini David
𝒢ℝϵℂ𝒪, Institut d'Astrophysique de Paris, UMR 7095, CNRS, Sorbonne Université, 98bis boulevard Arago, 75014 Paris, France.
Centre for Strings, Gravitation and Cosmology, Department of Physics, Indian Institute of Technology Madras, Chennai 600036, India.
Phys Rev Lett. 2023 Sep 22;131(12):121402. doi: 10.1103/PhysRevLett.131.121402.
The inspiral phase of gravitational waves emitted by spinless compact binary systems is derived through the fourth-and-a-half post-Newtonian (4.5PN) order beyond quadrupole radiation, and the leading amplitude mode (ℓ,m)=(2,2) is obtained at 4PN order. We also provide the radiated flux, as well as the phase in the stationary phase approximation. Rough numerical estimates for the contribution of each PN order are provided for typical systems observed by current and future gravitational wave detectors.
无自旋致密双星系统发出的引力波的旋进阶段是通过四极辐射之外的四点五阶后牛顿（4.5PN）阶推导得出的，并且在4PN阶获得了主导振幅模式（ℓ,m）=（2,2）。我们还给出了辐射通量以及驻相近似下的相位。针对当前和未来引力波探测器观测到的典型系统，给出了各PN阶贡献的粗略数值估计。
