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arXiv · 2007.13343

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

Tomoya Kinugawa·Takashi Nakamura·Hiroyuki Nakano
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Abstract

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 $\sigma_{\rm k}=0$--$500$ 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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Tomoya Kinugawa, Takashi Nakamura, Hiroyuki Nakano. 2020-07-27. Formation of mass gap compact object and black hole binary from Population III stars. https://arxiv.org/abs/2007.13343

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