The NINJA-2 catalog of hybrid post-Newtonian/numerical-relativity waveforms for non-precessing black-hole binaries

The NINJA-2 catalog of hybrid post-Newtonian/numerical-relativity waveforms for non-precessing black-hole binaries
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非进动黑洞双星的混合后牛顿/数值相对论波形的 NINJA-2 目录

DOI:
10.1088/0264-9381/29/12/124001
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发表时间:
2012
影响因子:
3.5
通讯作者:
Ajith P
Ajith P
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Ajith P

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数值注入分析 (NINJA) 项目是数值相对论和引力波数据分析社区成员之间的合作成果。 NINJA 的目的是使用数值生成的波形来研究现有引力波搜索和参数估计算法的敏感性,并促进数值相对论和数据分析社区之间更密切的合作。第一个 NINJA 项目仅使用少量短数值相对论波形的注入,这限制了其得出定量结论的能力。 NINJA-2 项目的目标是通过长期后牛顿数值相对论混合波形、大量注入和使用真实探测器数据来克服这些限制。我们报告 NINJA-2 项目的提交要求和波形目录的构建。八个数值相对论小组贡献了 56 个混合波形,其中包括模拟晚期吸气、合并和振铃的数值部分,以及模拟早期吸气的后牛顿部分。我们总结了每个小组在构建其提交内容时使用的技术。我们还报告了用于验证这些提交的程序,包括时域和频域的检查以及不同组的波形相互比较。到目前为止,这些过程仅考虑了 (l, m)=(2, 2) 模式。基于这些研究,我们判断混合波形适合 NINJA-2 研究。我们注意到这些调查的一些计划。
The numerical injection analysis (NINJA) project is a collaborative effort between members of the numerical-relativity and gravitational wave data-analysis communities. The purpose of NINJA is to study the sensitivity of existing gravitational-wave search and parameter-estimation algorithms using numerically generated waveforms and to foster closer collaboration between the numerical-relativity and data-analysis communities. The first NINJA project used only a small number of injections of short numerical-relativity waveforms, which limited its ability to draw quantitative conclusions. The goal of the NINJA-2 project is to overcome these limitations with long post-Newtonian—numerical-relativity hybrid waveforms, large numbers of injections and the use of real detector data. We report on the submission requirements for the NINJA-2 project and the construction of the waveform catalog. Eight numerical-relativity groups have contributed 56 hybrid waveforms consisting of a numerical portion modeling the late inspiral, merger and ringdown stitched to a post-Newtonian portion modeling the early inspiral. We summarize the techniques used by each group in constructing their submissions. We also report on the procedures used to validate these submissions, including examination in the time and frequency domains and comparisons of waveforms from different groups against each other. These procedures have so far considered only the (ℓ, m)=(2, 2) mode. Based on these studies, we judge that the hybrid waveforms are suitable for NINJA-2 studies. We note some of the plans for these investigations.
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