GWTC-4 和 GWTC-5 中引力波残差的目录级研究
A Catalog-Wide Study of Gravitational-Wave Residuals in GWTC-4 and GWTC-5
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中文总结 AI 辅助
本研究对 GWTC-4 和 GWTC-5 目录中高信噪比事件进行残差分析，发现残差与高斯噪声一致，表明波形模型参数估计偏差不必然在残差中显现，为验证引力波波形模型提供了数据空间补充诊断。
中文摘要 AI 辅助
LIGO-Virgo-KAGRA 探测器灵敏度的提高使得大量引力波事件目录得以积累，为评估波形模型性能提供了进行目录级残差分析的机会。我们研究了 GWTC-4 和 GWTC-5 中至少一个探测器信噪比 $>12$ 的事件，对通过减去 IMRPhenomXPHM 和 SEOBNRv5PHM 波形模型获得的白化残差的归一化 Q 变换能量应用了三种拟合优度检验。在整个目录中，残差与高斯噪声一致，在多探测器事件或有效的单探测器事件中均未发现系统性偏差的证据。对于参数估计中表现出强烈模型依赖性的事件，波形模型之间的差异同样不会产生持续的残差结构。这些结果表明，与波形建模相关的参数估计偏差不一定表现为残差中可检测的特征。因此，残差分析提供了数据空间中的补充诊断手段，用于在探测器灵敏度范围内验证引力波波形模型。
英文摘要
Improved sensitivity of the LIGO-Virgo-KAGRA detectors has enabled the accumulation of a large gravitational-wave event catalog, providing an opportunity for catalog-wide residual analyses to assess waveform-model performance. We study GWTC-4 and GWTC-5 events with signal-to-noise ratio $>12$ in at least one detector, applying three goodness-of-fit tests to the normalized Q-transform energies of whitened residuals obtained by subtracting the IMRPhenomXPHM and SEOBNRv5PHM waveform models. Across the catalog, the residuals are consistent with Gaussian noise, with no evidence of systematic deviations in either multi-detector events or valid single-detector events. For events exhibiting strong model dependence in parameter estimation, variations between waveform models likewise do not produce persistent residual structures. These results demonstrate that parameter-estimation biases associated with waveform modeling do not necessarily manifest as detectable features in the residuals. Residual analyses therefore provide a complementary diagnostic in data space for validating gravitational-wave waveform models within the detector sensitivity.
发表机构
- Guangxi University（广西大学）
- Southern Medical University（南方医科大学）
- Dalian University of Technology（大连理工大学）
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