论文标题
慢慢旋转Kerr-Newman黑洞的超级不稳定
Superradiant instability in slowly rotating Kerr-Newman black holes
论文作者
论文摘要
我们研究了在带电的大规模标扰扰动下缓慢旋转的Kerr-Newman（SKN）黑洞的超级不稳定性。这些黑洞比凯尔·纽曼黑洞更靠近Reissner-Nordström黑洞。我们计算大量标量的负吸收横截面，用于低频限制以上的超级散射。从标量势分析中，我们发现在SKN黑洞中不允许超级不稳定性，因为捕获井的条件与超沉淀条件不兼容。但是，如果将SKN黑洞放置在反射腔内，能量提取的速率可能会呈指数增长。最后，我们通过分析渐近标量电势和波功能，获得了捕获良好以在SKN黑洞中拥有quasibound状态的条件。
We study the superradiant instability of slowly rotating Kerr-Newman (sKN) black holes under a charged massive scalar perturbation. These black holes resemble closer the Reissner-Nordström black holes than the Kerr-Newman black holes. We compute the negative absorption cross section of a massive scalar for superradiant scattering in the low frequency limit. From the scalar potential analysis, we find that the superradiant instability is not allowed in the sKN black holes because the condition for a trapping well is not compatible with the superradiance condition. However, the rate of energy extraction might grow exponentially if the sKN black hole is placed inside a reflecting cavity. Finally, we obtain the condition for the trapping well to possess quasibound states in the sKN black holes by analyzing asymptotic scalar potential and wave functions.
