论文标题
准模式，准国家，标量云和类似Kerr的黑洞的超级不稳定性
Quasinormal modes, quasibound states, scalar clouds, and superradiant instabilities of a Kerr-like black hole
论文作者
论文摘要
我们使用持续的分数方法来确定与Kerr样黑洞周围的标量场相关的特征频率。本文中考虑的Kerr样公制是Konoplya，Rezzolla和Zhidenko提出的轴对称黑洞的一般参数化的子类。除了其质量$ m $和特定的角动量$ a $外，黑洞还取决于第三个参数$η$，称为变形参数。我们研究了变形参数如何影响黑洞周围大型标量场的准模式和准式状态。特别是，我们计算与标量场的超级不稳定性相关的时间尺度。还讨论了这些不稳定性可能形成的固定标量云的属性。
We use the continued fraction method to determine the eigenfrequencies associated with a scalar field around a Kerr-like black hole. The Kerr-like metric considered in this article is a subclass of the general parametrization of axisymmetric black holes proposed by Konoplya, Rezzolla and Zhidenko. In addition to its mass $M$ and specific angular momentum $a$, the black hole depends on a third parameter $η$, called the deformation parameter. We investigate how the deformation parameter affects the quasinormal modes and the quasibound states of a massive scalar field around the black hole. In particular, we compute the time scales associated with the superradiant instabilities of the scalar field in such a spacetime. The properties of stationary scalar clouds that could be formed by these instabilities are also discussed.
