论文标题
GW150914中的环形覆盖色调分析
Analysis of Ringdown Overtones in GW150914
论文作者
论文摘要
我们分析了GW150914合并后数据，以了解Ringdown Opterdone检测声明是否强大。我们没有发现波形峰值后数据中有夸张的泛音的证据。在峰值周围，贝叶斯因子并不表示泛音的存在，而对非零振幅的支撑对起始时间的变化敏感，远小得多。这表明泛音检测的主张是噪声主导的。我们在实际检测器噪声的相邻段中进行GW150914样注射，我们表明噪声确实可以诱导人工证据的泛音证据。
We analyze GW150914 post-merger data to understand if ringdown overtone detection claims are robust. We find no evidence in favor of an overtone in the data after the waveform peak. Around the peak, the Bayes factor does not indicate the presence of an overtone, while the support for a nonzero amplitude is sensitive to changes in the starting time much smaller than the overtone damping time. This suggests that claims of an overtone detection are noise-dominated. We perform GW150914-like injections in neighboring segments of the real detector noise, and we show that noise can indeed induce artificial evidence for an overtone.
