Constraints from Gravitational-wave Detections of Binary Black Hole Mergers on the 12C(α, γ)16O Rate
Constraints from Gravitational-wave Detections of Binary Black Hole Mergers on the 12C(α, γ)16O Rate
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DOI：
10.3847/2041-8213/abbadd
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发表时间：
2020-06
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影响因子：
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通讯作者：
R. Farmer;M. Renzo;S. D. Mink;M. Fishbach;S. Justham
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文献类型：
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作者：
R. Farmer;M. Renzo;S. D. Mink;M. Fishbach;S. Justham
引力波探测开始使我们能够通过它们在最后残余物上留下的印记来探测超大质量恒星演化的物理过程。恒星演化理论预言，由于对不稳定性的影响，在高质量的黑洞质量分布中存在一个缺口。以前，我们表明，差距的位置是强大的模型的不确定性，但它依赖于敏感的不确定率。这一速率具有重要的天体物理学意义，它决定了氧的生成，而碳的生成则是以牺牲碳为代价的。我们使用开源的梅萨恒星演化代码来演化大质量氦星，以探测质量间隙的位置。我们发现，最大的黑洞质量低于差距之间变化，取决于不确定的反应速率的强度。对于前10次黑洞引力波探测，我们将天体物理S因子限制在68%的置信度。通过检测到的双黑洞合并，我们希望将S因子限制在±10-30以内。我们还强调了电磁瞬变测量的独立约束的作用。对脉动对不稳定性超新星的明确探测意味着。简并与其他模型的不确定性需要进一步研究，但探测核恒星天体物理学为未来的引力波探测器提出了一个有希望的科学案例。
Gravitational-wave detections are starting to allow us to probe the physical processes in the evolution of very massive stars through the imprints they leave on their final remnants. Stellar evolution theory predicts the existence of a gap in the black hole mass distribution at high mass due to the effects of pair instability. Previously, we showed that the location of the gap is robust against model uncertainties, but it does depend sensitively on the uncertain rate. This rate is of great astrophysical significance and governs the production of oxygen at the expense of carbon. We use the open-source MESA stellar evolution code to evolve massive helium stars to probe the location of the mass gap. We find that the maximum black hole mass below the gap varies between and , depending on the strength of the uncertain reaction rate. With the first 10 gravitational-wave detections of black holes, we constrain the astrophysical S-factor for , at , to at 68% confidence. With detected binary black hole mergers, we expect to constrain the S-factor to within ±10–30 . We also highlight a role for independent constraints from electromagnetic transient surveys. The unambiguous detection of pulsational pair-instability supernovae would imply that . Degeneracies with other model uncertainties need to be investigated further, but probing nuclear stellar astrophysics poses a promising science case for the future gravitational-wave detectors.