Accurate inspiral-merger-ringdown gravitational waveforms for nonspinning black-hole binaries including the effect of subdominant modes
Accurate inspiral-merger-ringdown gravitational waveforms for nonspinning black-hole binaries including the effect of subdominant modes
复制标题
非自旋黑洞双星的精确吸气-合并-衰荡引力波形，包括次主模的影响
DOI：
10.1103/physrevd.96.124010
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发表时间：
2017
影响因子：
5
通讯作者：
Ajith, Parameswaran
中科院分区：
文献类型：
--
作者：
Mehta, Ajit Kumar;Mishra, Chandra Kant;Varma, Vijay;Ajith, Parameswaran
本文给出了一个解析波形族，描述了非自旋黑洞双星的涡卷、合并和衰荡过程中的引力波，其中包括几种非四极模[（λ =2，m=±1），（λ =3，m=±3），（λ =4，m=±4）]的影响.我们首先构建自旋加权球谐模的混合波形匹配的数值相对论模拟（质量比1-10）描述后期inspiral，合并，和衰荡的二进制后牛顿/有效的一体波形描述早期inspiral。通过对混合波形的傅里叶变换进行建模，利用微扰计算得到的解析函数，在频域中构造解析波形族。由此产生的高精度，即用型波形是高度忠实（不忠实）的观测GWs从nonspinning黑洞双星，是非常便宜的生成。
We present an analytical waveform family describing gravitational waves (GWs) from the inspiral, merger, and ringdown of nonspinning black-hole binaries including the effect of several nonquadrupole modes [(ℓ=2,m=±1),(ℓ=3,m=±3),(ℓ=4,m=±4) apart from]. We first construct spin-weighted spherical harmonics modes ofhybridwaveforms by matching numerical-relativity simulations (with mass ratio 1–10) describing the late inspiral, merger, and ringdown of the binary with post-Newtonian/effective-one-body waveforms describing the early inspiral. An analytical waveform family is constructed in frequency domain by modeling the Fourier transform of the hybrid waveforms making use of analytical functions inspired by perturbative calculations. The resulting highly accurate, ready-to-use waveforms are highly faithful (unfaithfulness) for observation of GWs from nonspinning black-hole binaries and are extremely inexpensive to generate.