论文标题

人口III星的质量间隙紧凑物体和黑洞二进制的形成

Formation of mass gap compact object and black hole binary from Population III stars

论文作者

Kinugawa, Tomoya, Nakamura, Takashi, Nakano, Hiroyuki

论文摘要

当形成MGCOS(质量间隙紧凑的物体2--5 $ \,M _ {\ odot} $)时,我们对具有Maxwellian Kick速度分布的种群III二元星的种群合成模拟。我们发现,对于$σ_ {\ rm k} = 0 $ - $ 500 $ km/s的八个踢速度分散模型,黑洞的平均质量(bh)-mgco二进制质量为$ \ sim(30 \,m_ \ odot,\ odot,\,\,2.6 \,2.6 \,m_ \ odot)$。在模拟的数值数据中,我们发现BH-MGCO二进制的存在具有质量$(22.9 \,m_ \ odot,\,\,2.5 \,m_ \ odot)$,看起来像GW190814。

We performed population synthesis simulations of Population III binary stars with Maxwellian kick velocity distribution when MGCOs (Mass Gap Compact Objects with mass 2--5$\,M_{\odot}$) are formed. We found that for eight kick velocity dispersion models of $σ_{\rm k}=0$--$500$ km/s, the mean mass of black hole (BH)-MGCO binary is $\sim (30 \,M_\odot,\,2.6 \,M_\odot)$. In numerical data of our simulations, we found the existence of BH-MGCO binary with mass $(22.9 \,M_\odot,\,2.5 \,M_\odot)$ which looks like GW190814.

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