论文标题
标量超级不稳定性和重力波节的亚尺寸模式
Subdominant Modes of Scalar Superradiant Instability and Gravitational Wave Beats
论文作者
论文摘要
由于超级不稳定性，超轻标量可以从Kerr黑洞（BH）中提取能量和角动量。围绕BH旋转时，标记为$ NLM $的多种模式生长，发出连续重力波（GW）。在这项工作中，我们仔细研究了BH键合系统演变中$ n \ geq 1 $的亚域模式的贡献。我们发现，即使存在亚分手模式，BH仍沿着$ n = 0 $模式的regge轨迹发展。主导模式的干扰和亚尺寸模式在发射的GW中产生节拍，可用于将BH键合系统与其他单色GW源（例如中子星星）区分开。
Ultralight scalars could extract energy and angular momentum from a Kerr black hole (BH) because of superradiant instability. Multiple modes labelled with $nlm$ grow while rotating around the BH, emitting continuous gravitational wave (GW). In this work, we carefully study the contribution of the subdominant modes with $n\geq 1$ in the evolution of the BH-condensate system. We find the BH still evolves along the Regge trajectory of the $n=0$ modes even with the presence of the subdominant modes. The interference of the dominant and the subdominant modes produces beats in the emitted GW, which could be used to distinguish the BH-condensate systems from other monochromatic GW sources, such as neutron stars.
