论文标题
二进制黑洞的形成类似于GW190521，总质量为$ \ sim 150 \，m _ {\ odot} $来自人口III二进制星星进化
Formation of Binary Black Holes Similar to GW190521 with a Total Mass of $\sim 150\,M_{\odot}$ from Population III Binary Star Evolution
论文作者
论文摘要
对于零金属（人口III或POP III）星，我们表明，来自二进制流行歌曲III星的二进制黑洞的总质量可以为$ \ sim 150 \，M _ {\ odot} $，它与Ligo/virgo最近发现的二进制黑洞GW190521相符。这种二进制黑洞合并的事件率估计为0.13---0.66 $〜（ρ_{\ rm sfr}/（6 \ times10^5〜m _ {\ odot}/{\ rm mpc}^3） yr^{-1}~Gpc^{-3}}$, where $ρ_{\rm SFR}$ and $Err_{\rm sys}$ are the cumulative comoving mass density of Pop III stars depending on star formation rate and the systematic errors depending on uncertainties in the Pop III binary parameters, respectively.我们的信托模型中使用$ρ_ {\ rm sfr} = 6 \ times10^5〜m _ {\ odot}/{\ rm mpc}^3 $和$ err _ {\ rm sys} = 1 $是0.13---0.66 $ rm rm rm rm rm rm rm rm rm rm rm rm rm yr^{ - 1} 〜gpc^{ - 3}} $，与观察到的值为0.02---0.43 $〜{\ rm yr yr^{ - 1} 〜gpc^{ - 3}} $一致。
In the case of zero-metal (population III or Pop III) stars, we show that the total mass of binary black holes from binary Pop III star evolution can be $\sim 150 \,M_{\odot}$, which agrees with the mass of the binary black hole GW190521 recently discovered by LIGO/Virgo. The event rate of such binary black hole mergers is estimated as 0.13--0.66$~(ρ_{\rm SFR}/(6\times10^5~M_{\odot}/{\rm Mpc}^3))~Err_{\rm sys}~{\rm yr^{-1}~Gpc^{-3}}$, where $ρ_{\rm SFR}$ and $Err_{\rm sys}$ are the cumulative comoving mass density of Pop III stars depending on star formation rate and the systematic errors depending on uncertainties in the Pop III binary parameters, respectively. The event rate in our fiducial model with $ρ_{\rm SFR}=6\times10^5~M_{\odot}/{\rm Mpc}^3$ and $ Err_{\rm sys}=1$ is 0.13--0.66$~{\rm yr^{-1}~Gpc^{-3}}$, which is consistent with the observed value of 0.02--0.43$~{\rm yr^{-1}~Gpc^{-3}}$.
