Extrapolating gravitational-wave data from numerical simulations
Extrapolating gravitational-wave data from numerical simulations
复制标题
从数值模拟中推断引力波数据
DOI：
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
Abdul H. Mrou'e
中科院分区：
文献类型：
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作者：
M. Boyle;Abdul H. Mrou'e
两个互补的技术开发获得的渐近形式的引力波数据在大半径的数值模拟，在易于实现的算法的形式。结果表明，如果没有外推，近场效应产生的错误提取的波形，可以显着影响LIGO数据分析。外推技术进行了讨论的范围内的纽曼-彭罗斯数据适用于外推的波形从一个等质量，nonspinning黑洞二进制模拟。这两种方法的结果一致的误差估计。各种好处和不足的方法进行了讨论。
Two complementary techniques are developed for obtaining the asymptotic form of gravitational-wave data at large radii from numerical simulations, in the form of easily implemented algorithms. It is shown that, without extrapolation, near-field effects produce errors in extracted waveforms that can significantly affect LIGO data analysis. The extrapolation techniques are discussed in the context of Newman-Penrose data applied to extrapolation of waveforms from an equal-mass, nonspinning black-hole binary simulation. The results of the two methods are shown to agree within error estimates. The various benefits and deficiencies of the methods are discussed.