论文标题
被宇宙弦刺穿的旋转黑洞的响声光谱
Ringdown Spectroscopy of Rotating Black Holes Pierced by Cosmic Strings
论文作者
论文摘要
多个仪表理论预测存在不同质量密度$Gμ/c^2 $的宇宙字符串的存在。我们得出一个方程式，该方程式沿其旋转轴刺穿了旋转的黑洞的扰动，并计算了这种黑洞的准模式频率。然后，我们对第一个检测到的引力波事件GW150914进行参数估计，假设在残余物中刺穿了一个绳子，在90 \％的置信区间，限制了$gμ/c^2 <3.8 \ times 10^{ - 3} $，在90 \％的置信区间内，与kerers分析相当的阳光因子，而没有黑色的分析。与现有的研究重点是宇宙弦或宇宙弦网的相互交集相反，我们的工作集中于宇宙弦与黑洞的相交，并具有在二元合并信号中可以识别的特征。
Multiple gauge theories predict the presence of cosmic strings with different mass densities $Gμ/c^2$. We derive an equation governing the perturbations of a rotating black hole pierced by a straight, infinitely long cosmic string along its axis of rotation and calculate the quasinormal-mode frequencies of such a black hole. We then carry out parameter estimation on the first detected gravitational-wave event, GW150914, by hypothesizing that there is a string piercing through the remnant, yielding a constraint of $Gμ/c^2 <3.8\times 10^{-3}$ at the 90\% confidence interval with a comparable Bayes factor with an analysis for a Kerr black hole without a string. In contrast to existing studies which focus on the mutual intersection of cosmic strings, or the cosmic string network, our work focuses on the intersection of a cosmic string with a black hole, with characteristics which can be identified in binary coalescence signals.
