发表机构
University of Florida（佛罗里达大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
利用RingCWB算法对迄今最响亮的引力波信号GW250114进行振铃分析，测量其主导准正规模及第一泛音，所得频率和阻尼时间偏差与广义相对论预言一致，并严格约束了残余黑洞自旋。
AI 中文摘要
双黑洞并合事件GW250114是迄今探测到的最响亮的引力波信号，为精确检验爱因斯坦广义相对论（GR）提供了机会。其异常高的信噪比使得能够精确测量准正规模（QNMs）以及残余黑洞的性质。在本工作中，我们利用RingCWB算法对GW250114进行了振铃分析。我们测量了主导的(2,2,0)准正规模及其第一泛音，并约束了频率和阻尼时间相对于广义相对论预言值的分数偏差，得到δf_220 = 0.004_{-0.023}^{+0.022}和δτ_220 = 0.010_{-0.087}^{+0.096}，两者在给出的不确定度范围内均与零一致。这些结果代表了对于广义相对论偏差的严格约束。该分析还对残余自旋施加了严格限制，其结果与通过恒星演化形成的双黑洞一致。
英文摘要
The binary black hole merger GW250114, the loudest gravitational-wave signal detected to date, offers an opportunity to perform a precise test of Einstein's general relativity (GR). Its exceptionally high signal-to-noise ratio enables accurate measurements of the quasi-normal modes (QNMs) and properties of the remnant black hole. In this work, we present a ringdown analysis of GW250114 using the RingCWB algorithm. We measure the dominant $(2,2,0)$ QNM along with its first overtone and constrain the fractional deviations in frequency and damping time from their GR-predicted values, finding $δf_{220} = 0.004_{-0.023}^{+0.022}$ and $δτ_{220} = 0.010_{-0.087}^{+0.096}$ , both consistent with zero within the quoted uncertainties. These results represent stringent constraints on deviations from GR. The analysis also places tight constraints on the remnant spin, consistent with a binary black hole formed through stellar evolution.
Comments5 pages, 6 figures
