具有真实引力波含量的黑洞穿刺初始数据
Black hole puncture initial data with realistic gravitational wave content
摘要：
我们提出了改进的后牛顿启发的初始数据的非自旋黑洞双星，适合于数值演化与穿刺。我们回顾了Tichy et al. [W.蒂希湾Bruegmann，M. Campanelli和P.Diener，Phys.Rev.D67，064008（2003）]，显式地计算剩余的积分项。这些术语提高了远区的精度，并首次在初始数据中包括了现实的引力波。我们研究了这些数据在质心和远区的行为，证明了新度量的横向无痕部分与四极近似波形的一致性。这些数据可用于数值演化，使合并波形和后牛顿inspiral波形之间的直接连接。
英文摘要：
We present improved post-Newtonian-inspired initial data for non-spinning black-hole binaries, suitable for numerical evolution with punctures. We revisit the work of Tichy et al. [W. Tichy, B. Bruegmann, M. Campanelli, and P. Diener, Phys. Rev. D 67, 064008 (2003)], explicitly calculating the remaining integral terms. These terms improve accuracy in the far zone and, for the first time, include realistic gravitational waves in the initial data. We investigate the behavior of these data both at the center of mass and in the far zone, demonstrating agreement of the transverse-traceless parts of the new metric with quadrupole-approximation waveforms. These data can be used for numerical evolutions, enabling a direct connection between the merger waveforms and the post-Newtonian inspiral waveforms.
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