标题： 致密双星并合和发散过程中超轻玻色子的特征 显示英文标题

标题： Signatures of Ultralight Bosons in Compact Binary Inspiral and Outspiral

摘要： 超轻玻色子是各种物理和宇宙学理论中被广泛支持的粒子，并且可以在超辐射过程中自发产生，围绕旋转黑洞形成密集的类氢云。 当增长饱和后，云会通过引力波辐射缓慢耗尽其质量。 在这项工作中，我们研究了包含这种处于自旋0、1、2超辐射态的饱和引力原子的双星系统的轨道动力学，同时考虑了动力摩擦效应和云质量耗散的影响。 我们评估了质量耗散的重要性，发现尽管动力摩擦可能主导吸积阶段，但它通常不会影响由质量耗散驱动的外向扩张阶段。 聚焦于大轨道半径，我们探讨了观测外向扩张的条件，以及在黑洞 - 脉冲星双星系统中通过脉冲星计时信号探测云的可能性。 显示英文摘要

摘要： Ultralight bosons are well-motivated particles from various physical and cosmological theories, and can be spontaneously produced during the superradiant process, forming a dense hydrogen-like cloud around the spinning black hole. After the growth saturates, the cloud slowly depletes its mass through gravitational-wave emission. In this work we study the orbit dynamics of a binary system containing such a gravitational atom saturated in various spin-0,1,2 superradiant states, taking into account both the effects of dynamical friction and the cloud mass depletion. We estimate the significance of mass depletion, finding that although dynamical friction could dominate the inspiral phase, it typically does not affect the outspiral phase driven by the mass depletion. Focusing on the large orbit radius, we investigate the condition to observe the outspiral, and the detectability of the cloud via pulsar-timing signal in the case of black hole-pulsar binary.