论文标题
重新访问GW150914
Revisiting the ringdown of GW150914
论文作者
论文摘要
我们最近研究了GW150914二进制黑洞合并的响声的证据是噪声异常的结果。我们无法再现这些主张，发现我们对该事件的先前分析对于数据分析选择是可靠的，并且与期望峰值后的应变被很好地描述为残余黑洞的准模式的叠加。我们讨论了确定检测到任何特定的响声模式的含义和含义，并认为将实际的Ligo-Virgo数据误认为是为了告知合并是否线性或为什么合并看起来是线性的讨论。
We examine recent claims that evidence for an overtone in the ringdown of the GW150914 binary black hole merger was a result of noise anomalies. We cannot reproduce these claims, finding that our previous analysis of this event is robust to data analysis choices and consistent with the expectation that strain after the peak is well described as a superposition of quasinormal modes of the remnant black hole. We discuss the meaning and implications of establishing that any specific ringdown mode was detected, and argue that it is misguided to expect actual LIGO-Virgo data to inform the discussion of whether or why the merger looks linear.
