论文标题
原始黑洞二进制的合并历史
The merger history of primordial-black-hole binaries
论文作者
论文摘要
作为暗物质的候选者，原始黑洞（PBH）吸引了越来越多的注意力，因为它们可能是Ligo/Vergo观察到的重型二元黑洞（BBH）的祖细胞。准确估计PBH二进制文件的合并速率对于重建PBH的质量分布至关重要。有人指出，PBHS的合并历史可能会根据PBHS的质量函数而改变合并率分布。在本文中，我们使用了来自Ligo/处女座O1和O2观察跑步的10个BBH事件，以通过计算合并历史的影响来限制PBH的合并率分布。发现第二次合并过程对总合并率做出了亚较大的贡献，因此可以安全地忽略合并历史效果。
As a candidate of dark matter, primordial black holes (PBHs) have attracted more and more attentions as they could be possible progenitors of the heavy binary black holes (BBHs) observed by LIGO/Virgo. Accurately estimating the merger rate of PBH binaries will be crucial to reconstruct the mass distribution of PBHs. It was pointed out the merger history of PBHs may shift the merger rate distribution depending on the mass function of PBHs. In this paper, we use 10 BBH events from LIGO/Virgo O1 and O2 observing runs to constrain the merger rate distribution of PBHs by accounting the effect of merger history. It is found that the second merger process makes subdominant contribution to the total merger rate, and hence the merger history effect can be safely neglected.
