论文标题
GW190521和GWTC-1事件：对合并二进制黑洞系统的黑洞质量功能的影响
GW190521 and the GWTC-1 Events: Implication on the Black Hole Mass Function of Coalescing Binary Black Hole Systems
论文作者
论文摘要
With the black hole mass function (BHMF; assuming an exponential cutoff at a mass of $\sim 40\,M_\odot$) of coalescing binary black hole systems constructed with the events detected in the O1 run of the advanced LIGO/Virgo network, Liang et al.(2017) predicted that the birth of the lightest intermediate mass black holes (LIMBHs; with a final mass of $\gtrsim 100 \，m_ \ odot $）很可能会被O3运行中的高级LIGO/处女座检测器捕获。但是，O1和O2的观察数据运行的数据强烈赞成BHMF的截止值比指数级要明显得多。在这项工作中，我们表明幂律功能随后在$ \ sim 40 \，m_ \ odot $下方突然下降了$ \ sim $几十倍，然后将延伸至$ \ geq 100m_ \ odot $的新的powerlaw组件与O1和O2观察运行数据一致。有了这个新的BHMF，可以在高级Ligo/处女座的O3观察过程中检测到很多肢体事件。 GW190521出生的第一个肢体是在高级Ligo/Pirgo网络的O3运行初期检测到的事件，为我们的假设提供了额外的动力。
With the black hole mass function (BHMF; assuming an exponential cutoff at a mass of $\sim 40\,M_\odot$) of coalescing binary black hole systems constructed with the events detected in the O1 run of the advanced LIGO/Virgo network, Liang et al.(2017) predicted that the birth of the lightest intermediate mass black holes (LIMBHs; with a final mass of $\gtrsim 100\,M_\odot$) is very likely to be caught by the advanced LIGO/Virgo detectors in their O3 run. The O1 and O2 observation run data, however, strongly favor a cutoff of the BHMF much sharper than the exponential one. In this work we show that a power-law function followed by a sudden drop at $\sim 40\,M_\odot$ by a factor of $\sim $a few tens and then a new power-law component extending to $\geq 100M_\odot$ are consistent with the O1 and O2 observation run data. With this new BHMF, quite a few LIMBH events can be detected in the O3 observation run of advanced LIGO/Virgo. The first LIMBH born in GW190521, an event detected in the early stage of the O3 run of advanced LIGO/Virgo network, provides additional motivation for our hypothesis.
