论文标题
来自毛茸茸的黑洞的回声
Echoes from Hairy Black Holes
论文作者
论文摘要
我们研究了标量扰动在静态毛茸茸的黑洞中产生的时间信号的波形，其中扰动可以由双峰有效的有效潜力控制。内部电位峰将引起回声，这为测试Kerr假设提供了强大的工具。波形是在时间和频域中构建的，我们发现延迟时波形由长寿命和较长的寿命型准模式确定，这些模式分别被困在电位山谷和较小的峰附近。当峰之间的距离明显大于峰的宽度时，通过长寿和较长的寿命模式的叠加产生了一系列腐烂的回声脉冲。在某些情况下，回声可能会消失，然后再出现。当峰足够接近时，一个人检测到的回声信号和以下正弦尾巴的尾巴较少，该尾巴由长寿或较长的模式控制，因此衰减非常缓慢。
We study the waveforms of time signals produced by scalar perturbations in static hairy black holes, in which the perturbations can be governed by a double-peak effective potential. The inner potential peak would give rise to echoes, which provide a powerful tool to test the Kerr hypothesis. The waveforms are constructed in the time and frequency domains, and we find that the late-time waveforms are determined by the long-lived and sub-long-lived quasinormal modes, which are trapped in the potential valley and near the smaller peak, respectively. When the distance between the peaks is significantly larger than the width of the peaks, a train of decaying echo pulses is produced by the superposition of the long-lived and sub-long-lived modes. In certain cases, the echoes can vanish and then reappear. When the peaks are close enough, one detects far fewer echo signals and a following sinusoid tail, which is controlled by the long-lived or sub-long-lived mode and hence decays very slowly.
