论文标题
固定积聚流，核燃烧
Stationary accretion flow with nuclear burning
论文作者
论文摘要
我们提出了一系列由中子恒星（或黑洞）积聚的球形对称固定流的数值解。我们考虑了由碳和氧气组成的物质的积聚，这些物质和氧气在中子恒星被巨大恒星的CO恒星或CO核心吞没后模仿流动。发现有两种类型的跨音速解决方案，具体取决于吸积率。具有较小积聚速率的流量以超音速速度到达中心（或中心对象的表面）。具有较大积聚速率的另一种类型在跨多个点内有另一个声音点，而流动点处的流动截断。划分这两种类型的关键积聚率是在环境物质中质量和特定焓的函数得出的。我们讨论了解决方案的含义，对超级型ia型超新星和ICN型超新星的新机制的含义。
We present a series of numerical solutions of spherically symmetric stationary flows with nuclear burning accreted by a neutron star (or black hole). We consider the accretion of matter composed of carbon and oxygen, which mimics the flow after a neutron star is engulfed by a CO star or CO core of a massive star. It is found that there are two types of transonic solutions depending on the accretion rate. The flow with a small accretion rate reaches the center (or the surface of the central object) at supersonic speeds. The other type with a large accretion rate has another sonic point inside the transonic point and the flow truncates at the sonic point. The critical accretion rate dividing these two types is derived as a function of the mass of the central object and the specific enthalpy in the ambient matter. We discuss implications from the solutions for a new mechanism of super-Chandrasekhar type Ia supernovae and type Icn supernovae.
