The SXS collaboration catalog of binary black hole simulations
The SXS collaboration catalog of binary black hole simulations
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DOI：
10.1088/1361-6382/ab34e2
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发表时间：
2019-04
影响因子：
3.5
通讯作者：
M. Boyle;D. Hemberger;D. Iozzo;G. Lovelace;S. Ossokine;H. Pfeiffer;M. Scheel;L. Stein;Charles J. Woo
中科院分区：
文献类型：
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作者：
M. Boyle;D. Hemberger;D. Iozzo;G. Lovelace;S. Ossokine;H. Pfeiffer;M. Scheel;L. Stein;Charles J. Woo
黑洞合并产生的引力波的精确模型对于探测器观测尽可能多的事件，同时提取最大的科学是必要的。在黑洞合并时，黑洞合并产生的引力波只能用数值相对论来计算。在本文中，我们提出了一个重大更新的模拟极端时空（SXS）合作目录的数值模拟合并黑洞。该目录包含2018种不同的配置（与2013年SXS目录相比增加了11倍），包括1426种自旋旋进配置，质量比在1到10之间，自旋幅度高达0.998。该目录中的波形长度中位数为39个周期的主导引力波模式，最短的波形包含7.0个周期，最长的351.3个周期。我们讨论的改进，如校正移动质心和扩展覆盖的参数空间。我们还对数值误差进行了全面的分析，发现了对应于10−4波形失配的典型截断误差。模拟提供的残余质量和自旋的不确定性为0.03%和0.1%（第90百分位数），大约比残余属性的分析模型好一个数量级。完整目录可在www.black-holes.org/waveforms上公开获取。
Accurate models of gravitational waves from merging black holes are necessary for detectors to observe as many events as possible while extracting the maximum science. Near the time of merger, the gravitational waves from merging black holes can be computed only using numerical relativity. In this paper, we present a major update of the Simulating eXtreme Spacetimes (SXS) Collaboration catalog of numerical simulations for merging black holes. The catalog contains 2018 distinct configurations (a factor of 11 increase compared to the 2013 SXS catalog), including 1426 spin-precessing configurations, with mass ratios between 1 and 10, and spin magnitudes up to 0.998. The median length of a waveform in the catalog is 39 cycles of the dominant gravitational-wave mode, with the shortest waveform containing 7.0 cycles and the longest 351.3 cycles. We discuss improvements such as correcting for moving centers of mass and extended coverage of the parameter space. We also present a thorough analysis of numerical errors, finding typical truncation errors corresponding to a waveform mismatch of ∼10−4. The simulations provide remnant masses and spins with uncertainties of 0.03% and 0.1% (90th percentile), about an order of magnitude better than analytical models for remnant properties. The full catalog is publicly available at www.black-holes.org/waveforms.