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arXiv 1908.02312gr-qcastro-ph.CO
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在双黑洞合并总体自旋测量中寻找超轻玻色子

Searching for ultralight bosons within spin measurements of a population of binary black hole mergers

Ken K. Y. Ng, Otto A. Hannuksela, Salvatore Vitale, Tjonnie G. F. Li

摘要:

如果超轻玻色子的康普顿波长与黑洞的大小相当,它们就可以在旋转的黑洞周围形成云。玻色子云通过一个被称为超辐射的过程使黑洞向下旋转,将黑洞的旋转降低到一个特征值。有人建议,由地面引力波探测器探测到的黑洞的自旋测量可以用来限制超轻玻色子的质量。不幸的是,对单个黑洞自旋的测量往往是不确定的,导致不确定的结果。相反,我们使用分层贝叶斯推断来结合来自多个引力波源的信息,并获得更强的约束。我们发现,数百个高信噪比的引力波探测足以排除(确认)在质量范围$\left[10^{-13},3\times 10^{-12}\right]~\rm{eV}$ $\left([10^{-13},10^{-12}]~\rm{eV}\right)$的非相互作用玻色子的存在。精确的数字取决于形成时黑洞自旋的分布和玻色子的质量。从LIGO和Virgo在前两次观测中检测到的二元黑洞合并的少数无信息自旋测量中,我们不能得出统计上有意义的结论。

英文摘要:

Ultralight bosons can form clouds around rotating black holes if their Compton wavelength is comparable to the black hole size. The boson cloud spins down the black hole through a process called superradiance, lowering the black hole spin to a characteristic value. It has been suggested that spin measurements of the black holes detected by ground-based gravitational-wave detectors can be used to constrain the mass of ultralight bosons. Unfortunately, a measurement of the individual black hole spins is often uncertain, resulting in inconclusive results. Instead, we use hierarchical Bayesian inference to combine information from multiple gravitational-wave sources and obtain stronger constraints. We show that hundreds of high signal-to-noise ratio gravitational-wave detections are enough to exclude (confirm) the existence of non-interacting bosons in the mass range $\left[10^{-13},3\times 10^{-12}\right]~\rm{eV}$ $\left([10^{-13},10^{-12}]~\rm{eV}\right)$. The precise number depends on the distribution of black hole spins at formation and the mass of the boson. From the few uninformative spin measurements of binary black hole mergers detected by LIGO and Virgo in their first two observing runs, we cannot draw statistically significant conclusions.

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。

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