AI 中文总结
该研究针对双黑洞遗迹的振铃引力波，提出基于cWB重建引力波信号的振铃分析方法，对QNM频率和阻尼时间约束更严，通过分析GWTC - 3数据，验证了广义相对论预测，联合分析给出频率和阻尼时间分数偏差，与零在不确定性内一致。
AI 中文摘要
双黑洞合并产生的振铃引力波是遗迹黑洞准正则模（QNM）的叠加。在广义相对论中，QNM是具有由遗迹质量和自旋唯一确定的频率和阻尼时间的阻尼谐波振荡。测量振铃模式并进行黑洞光谱分析为检验广义相对论的有效性提供了一种工具。我们提出了一种基于用相干波爆发（cWB）重建引力波信号的振铃分析方法。该方法对QNM频率和阻尼时间的约束比以前的测量更严格。精度的提高源于cWB重建实现的降噪和增强的振铃分析，后者能在更早、更接近合并的时间探测遗迹特性。我们分析了第三次引力波瞬态目录（GWTC - 3）中公开可用的双黑洞探测数据。对于所有考虑的事件，主导的（l,m）=(2,2)模式的测量频率和阻尼时间与广义相对论的预测一致。联合分析进一步加强了这些约束，频率的分数偏差为δf220 = 0.003±0.028，阻尼时间的分数偏差为δτ220 = 0.050±0.081，在给定不确定性内与零一致。
英文摘要
The ringdown gravitational wave from a binary black hole (BBH) merger is a superposition of quasi-normal modes (QNMs) of the remnant black hole. In general relativity (GR), QNMs are damped harmonic oscillations with frequencies and damping times uniquely determined by the remnant's mass and spin. The measurement of the ringdown modes and performing black hole spectroscopy provides a tool to test the validity of GR. In this work, we present RingCWB, a ringdown analysis method based on coherent WaveBurst (cWB), an unmodeled pipeline for the detection and reconstruction of gravitational-wave signals. This method yields tighter constraints on the QNM frequency and damping time than previous measurements. The improved precision results from the noise reduction achieved by the cWB reconstruction and the enhanced ringdown analysis, which probes the remnant properties at earlier times, closer to the merger. We have analysed publicly available binary black hole (BBH) detections from the third Gravitational-Wave Transient Catalog (GWTC-3). For all events considered, the measured frequency and damping time of the dominant $(l,m)=(2,2)$ mode are found to be consistent with the predictions of GR. A combined analysis further strengthens these constraints, yielding fractional deviations in frequency $δf_{220} = -0.005_{-0.028}^{+0.028}$ and damping time $δτ_{220} = 0.032_{-0.090}^{+0.108}$, consistent with zero within the quoted uncertainties.
Comments8 pages, 4 figures
