基于引力波的广义相对论零检验
Null test of general relativity based on gravitational waves
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中文总结 AI 辅助
本文提出一种基于引力波数据的广义相对论零检验方案，通过将偏差参数转化为质量-质量关系并比较其概率，应用于五个O1/O2双黑洞事件，发现GR偏差迹象但不具决定性，且网络信噪比与偏差强度无单调相关，该方案可推广至全部引力波数据。
中文摘要 AI 辅助
目前已经探测到数百个引力波事件，它们是研究各种基本问题（包括广义相对论（GR）理论的检验）的良好工具。在基于引力波数据的GR检验方案中，参数化方案已被包括LIGO-VIRGO-KAGRA合作组织（LVK）在内的许多团队广泛研究。现有结果表明，与GR的偏差参数很小。在本文中，我们希望评估这些偏差参数是否小到足以确认GR。我们将偏差参数转换为质量-质量关系，并通过比较不同参数所得的质量-质量关系，可以估计数据支持GR理论的概率。将我们的零检验方案应用于五个O1/O2双黑洞事件，我们发现了一些GR偏差迹象，但这些迹象尚不具决定性。我们还发现网络信噪比与GR偏差强度之间没有单调相关性，这表明观测到的张力并非简单地由信号强度驱动。我们的零检验方案可以轻松推广并应用于所有引力波观测数据。
英文摘要
Several hundreds of gravitational wave events have been detected. They are good tools to investigate various fundamental problems, including tests of general relativity (GR) theory. Among the GR test schemes based on gravitational wave data, the parameterized scheme has been extensively studied by many groups including the LIGO-VIRGO-KAGRA collaboration (LVK). Existing results indicate that the deviation parameters from GR are small. In the current paper, we would like to estimate whether these deviation parameters are small enough to confirm GR. We transform the deviation parameters into mass--mass relations and, by comparing the resulting mass--mass relations from different parameters, we can estimate the probabilities that the data favor the GR theory. Applying our null test scheme to five O1/O2 binary black hole events, we find some GR deviation signatures but they are not conclusive yet. We also find no monotonic correlation between the network SNR and the strength of GR deviation, suggesting that the observed tensions are not simply driven by signal strength. Our null test scheme can be easily generalized and applied to all gravitational wave observation data.
发表机构
- University of Chinese Academy of Sciences（中国科学院大学）
- Institute of Theoretical Physics, Chinese Academy of Sciences（中国科学院理论物理研究所）
- Beijing Normal University（北京师范大学）
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