与不可见伙伴共舞：原初黑洞的三体交换
Dancing with invisible partners: Three-body exchanges with primordial black holes
AI总结：
针对原初黑洞丰度的动力学约束问题，研究其参与的双星交换过程，发现太阳系附近或存在大量此类不可见伴星双星，可解释与孤立双星演化预测相悖的观测系统。
摘要：
大质量原初黑洞的丰度历史上受动力学探针约束。由于这些天体可参与高能少体散射过程，能轻易向恒星系统传递能量，尤其会破坏宽双星。但破坏并非少体过程的唯一可能结果，原初黑洞也可参与交换过程：双星系统的一个组分被弹出，由黑洞自身替代。此时，双星中剩余天体在动力学上会表现为拥有不可见伴星。我们研究了作为暗物质组分的原初黑洞的交换过程率，并评估了探测此类双星的可能机制。发现太阳系附近可能存在大量此类双星，且该过程可解释观测到的、性质与孤立双星演化预测相悖的双星系统。
英文摘要：
The abundance of massive primordial black holes has historically been constrained by dynamical probes. Since these objects can participate in hard few-body scattering processes, they can readily transfer energy to stellar systems, and, in particular, can disrupt wide binaries. However, disruption is not the only possible outcome of such few-body processes. Primordial black holes could also participate in exchange processes, in which one component of a binary system is ejected and replaced by the black hole itself. In this case, the remaining object in the binary would dynamically appear to have an invisible companion. We study the rate of exchange processes for primordial black holes as a component of dark matter and evaluate possible mechanisms for detecting such binaries. We find that many such binaries plausibly exist in the Solar neighborhood, and show that this process can account for observed binary systems whose properties run counter to the predictions of isolated binary evolution.
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