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arXiv 1702.00909gr-qc
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非自旋模板波在排列自旋双黑洞引力波参数估计中的系统偏差

Systematic Bias Due to Nonspinning Template Waveforms in the Gravitational Wave Parameter Estimation for Aligned-Spin Binary Black Holes

Hee-Suk Cho

摘要:

我们研究了对齐自旋二进制黑洞(BBH)信号的引力波的参数估计和评估的影响,可以通过使用nonspinning模板波形产生的偏差。我们采用简单的方法来计算重叠分布的统计不确定性。对于基准波形模型,我们使用一个唯象模型,该模型被设计用于产生从合并BBH系统发射的引力波形。我们发现,nonspinning波形模板恢复的质量参数可以显着偏离对齐自旋信号的真实值。通过比较系统偏差与统计不确定性,我们检查的有效性nonspinning模板对齐自旋BBH的参数估计。

英文摘要:

We study the parameter estimation of gravitational waves for aligned-spin binary black hole (BBH) signals and assess the impact of bias that can be produced by using nonspinning template waveforms. We employ simple methods to calculate the statistical uncertainty from an overlap distribution. For the fiducial waveform model, we use a phenomenological model, which is designed to generate the gravitational waveforms emitted from merging BBH systems. We show that the mass parameters recovered by nonspinning waveform templates can be significantly biased from the true values of aligned-spin signals. By comparing the systematic bias with the statistical uncertainty, we examine the validity of nonspinning templates for the parameter estimation of aligned-spin BBHs.

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