论文标题
轻轴发射和合并二进制黑洞的形成
Light Axion Emission and the Formation of Merging Binary Black Holes
论文作者
论文摘要
我们通过稳定的传质和公共包膜场景研究了由于光轴发射引起的恒星冷却对黑洞二进制的形成和演化的影响。我们发现，在存在光轴发射的情况下，在较低的质量间隙（$ \ rm m _ {\ rm bh} <4 m_ \ odot $）中，没有二进制黑洞合并形成。在某些系统中，发生这种情况是因为轴可防止Roche Lobe溢出。在其他情况下，它们阻止了共同的信封被弹出。我们的结果适用于带有耦合$ g_ {aγ} \ gtrsim 10^{ - 10} \，\ rm gev^{ - 1} $（到光子）或$α_{ae} \ gtrsim 10^{ - 26} $（对电子）和$ m_a $ m_a \ ll 10 \，因此，弱耦合的粒子可能会在Ligo/virgo/kagra数据中产生质量间隙$ \ rm 2 m_ \ odot <m _ {\ rm bh} <4 m_ \ odot $，当时不存在巨大的质量间隙。
We study the impact of stellar cooling due to light axion emission on the formation and evolution of black hole binaries, via stable mass transfer and the common envelope scenario. We find that in the presence of light axion emission, no binary black hole mergers are formed with black holes in the lower mass gap ($\rm M_{\rm BH} < 4 M_\odot $) via the common envelope formation channel. In some systems, this happens because axions prevent Roche lobe overflow. In others, they prevent the common envelope from being ejected. Our results apply to axions with couplings $ g_{a γ} \gtrsim 10^{-10}\, \rm GeV^{-1}$ (to photons) or $α_{ae} \gtrsim 10^{-26} $ (to electrons) and masses $ m_a \ll 10 \, \rm keV$. Light, weakly coupled particles may therefore apparently produce a mass gap $\rm 2 M_\odot < M_{\rm BH} < 4 M_\odot $ in the LIGO/Virgo/KAGRA data, when no mass gap is present in the stellar remnant population.
