论文标题
脉冲配对稳定性和种群的质量差距III黑洞：过冲的影响
Pulsational pair-instability and the mass gap of Population III Black Holes: Effects of overshooting
论文作者
论文摘要
自从发现GW190521以来，已经提出了一些建议，以解释由（脉动）配对稳定性引起的质量间隙中的黑洞形成，$ m = 65-130 m_ \ odot $。我们使用恒星进化和流体动力学代码通过脉冲配对（PPI）过程来计算流行III恒星的质量排斥。如果对过冲的参数采用了相对较小但合理的值，则在PPI阶段，恒星不会成为红色的超级巨人。我们表明，在这种情况下，大多数氢包膜在PPI的质量喷射后仍存在。我们发现，BH质量最多可能是$ M = 109 m_ \ odot $以下质量稳定超新星的质量范围。
Since the discovery of GW190521, several proposals have been put forward to explain the formation of a black hole in the mass gap caused by (pulsational) pair-instability, $M = 65-130 M_\odot$. We calculate the mass ejection of Pop III stars by the pulsational pair-instability (PPI) process using a stellar evolution and hydrodynamical code. If a relatively small, but reasonable value is adopted for the overshooting parameter, the stars do not become red super giants during the PPI phase. We show that in this case most of the hydrogen envelope remains after the mass ejection by PPI. We find that the BH mass could be at most $M = 109 M_\odot$ below the mass range of pair-instability supernovae.
