对黑洞质谱的研究
Shedding light on the black hole mass spectrum
摘要：
恒星黑洞（BH）的质量谱是高度不确定的。BH形成的理论模型强烈依赖于祖星的星风效率和超新星（SN）爆炸机制。我们讨论的BH质谱，我们使用SEVN，一个新的公共人口合成代码，包括最新的星风处方和几个SN爆炸模型。我们的模型表明，亚太阳的金属环境的引力波源GW 150914的祖先。我们表明，我们的模型预测大得多的BH群众（高达~100 Msun）比其他人口合成代码，在低金属丰度。在这个过程中，我们还讨论了对不稳定性SNe对我们以前发表的模型的影响。
英文摘要：
The mass spectrum of stellar black holes (BHs) is highly uncertain. Theoretical models of BH formation strongly depend on the efficiency of stellar winds of the progenitor star and on the supernova (SN) explosion mechanism. We discuss the BH mass spectrum we obtain using SEVN, a new public population-synthesis code that includes up-to-date stellar-wind prescriptions and several SN explosion models. Our models indicate a sub-solar metallicity environment for the progenitors of the gravitational wave source GW150914. We show that our models predict substantially larger BH masses (up to ~100 Msun) than other population synthesis codes, at low metallicity. In this proceeding, we also discuss the impact of pair-instability SNe on our previously published models.
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