arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2403.03147gr-qchep-phhep-th
收藏

黑洞双星中引力原子的共振历史

Resonant history of gravitational atoms in black hole binaries

Giovanni Maria Tomaselli, Thomas F. M. Spieksma, Gianfranco Bertone

AI总结:

本文研究黑洞双星旋近中超轻玻色子云的共振历史,首次一致考虑轨道反作用非线性及一般偏心率与倾角,揭示共振启动或中断的临界条件,并刻画了未来毫赫兹引力波探测中的观测特征。

摘要:

旋转黑洞可以产生超轻玻色子的超辐射云。当黑洞处于双星系统中时,其云可能经历共振和电离。这些过程会在引力波形上留下依赖于云性质的独特特征。为了确定系统进入未来毫赫兹探测器频段时云的状态,我们研究了旋近过程中所遇到共振的时间顺序。我们首次一致地考虑了轨道反作用引起的非线性,并允许轨道具有一般的偏心率和倾角。我们发现共振现象学展现出引人注目的新特征。共振可以在参数的临界阈值之上“启动”或“中断”,我们对此进行了解析计算,并发现共振会引发偏心率和倾角的剧烈变化。将这些结果应用于现实系统,我们发现了两种可能的结果。如果双星与云足够接近反向旋转,云将以其原始状态存活,直到系统进入探测频段;否则,云会在较大间距处的一次共振中被摧毁,但会在偏心率和倾角上留下印记。在这两种情形下,我们都刻画了观测特征,并特别关注未来的引力波探测器。

英文摘要:

Rotating black holes can produce superradiant clouds of ultralight bosons. When the black hole is part of a binary system, its cloud can undergo resonances and ionization. These processes leave a distinct signature on the gravitational waveform that depends on the cloud's properties. To determine the state of the cloud by the time the system enters the band of future millihertz detectors, we study the chronological sequence of resonances encountered during the inspiral. For the first time, we consistently take into account the nonlinearities induced by the orbital backreaction and we allow the orbit to have generic eccentricity and inclination. We find that the resonance phenomenology exhibits striking new features. Resonances can "start" or "break" above critical thresholds of the parameters, which we compute analytically, and induce dramatic changes in eccentricity and inclination. Applying these results to realistic systems, we find two possible outcomes. If the binary and the cloud are sufficiently close to counter-rotating, the cloud survives in its original state until the system enters in band; otherwise, the cloud is destroyed during a resonance at large separations, but leaves an imprint on the eccentricity and inclination. In both scenarios, we characterize the observational signatures, with particular focus on future gravitational wave detectors.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑