论文标题
填补黑洞质量间隙：通过添加非核能量，避免大量恒星中的双对不稳定
Filling the Black Hole Mass Gap: Avoiding Pair Instability in Massive Stars through Addition of Non-Nuclear Energy
论文作者
论文摘要
在标准恒星演变中，质量的星星约150美元到$ 240 m_ \ odot $，预计将进化为没有黑洞（BH）残余的一对不稳定性超新星。这种进化行为导致黑洞质量功能的预测差距从约50美元到$ 140 m_ \ odot $。然而，Ligo和处女座的合作[1]最近发现了质量的黑洞$ 66 m_ \ odot $和$ 85 m_ \ odot $在重力波事件中GW190521。我们提出了一种填充BH质量间隙的新方法。如果除了核融合外，在整个恒星中添加了能源，改变的进化可能会避免对一对不稳定性超新星的完全破坏，而是将BH残留物留在后面。一个额外的能源的一个例子是恒星中的暗物质歼灭，但我们的结果更普遍。我们通过探索使用MESA一维恒星进化软件将能源和密度独立于$ 180 m_ \ odot $ Star添加到$ 180 m_ \ odot $ Star的效果来显示这种现象。如果$ \ sim50 $ \％的恒星能量是由于这个新来源引起的，那么恒星能够完全避免对这对不稳定，并朝着核心偏曲超新星发展，最终是质量$ \ sim $ \ sim 120 m_ \ odot $的BH残留物。
In standard stellar evolution, stars with masses ranging from approximately $150$ to $240 M_\odot$ are expected to evolve to a pair instability supernova with no black hole (BH) remnant. This evolutionary behavior leads to a predicted gap in the black hole mass function from approximately $50$ to $140 M_\odot$. Yet the LIGO and Virgo Collaborations[1] recently discovered black holes of masses $66 M_\odot$ and $85 M_\odot$ in the gravitational wave event GW190521. We propose a new method to populate the BH mass gap. If an energy source is added throughout the star in addition to nuclear fusion, it is possible for the altered evolution to avoid the complete destruction of a pair instability supernova, and instead a BH remnant is left behind. An example of an extra energy source is dark matter annihilation within the star, but our results hold more generally. We show this phenomenon by exploring the effect of adding an energy source independent of temperature and density to a $180 M_\odot$ star, using the MESA one-dimensional stellar evolution software. If $\sim50$\% of the star's energy is due to this new source, the star is capable of avoiding the pair instability entirely and evolving towards a core-collapse supernova and ultimately a BH remnant with mass $\sim 120 M_\odot$.
