论文标题
核物质和组成在核心溢出的超新星和长期原始中子恒星冷却中的影响
Effects of nuclear matter and composition in core-collapse supernovae and long-term proto-neutron star cooling
论文作者
论文摘要
我们通过基于微观核多体框架采用最新的状态核方程（EOS）来研究热物质在核心爆发超新星中的影响。我们通过基于变异方法的比较来探索基于Dirac Brueckner Hartree-Fock理论的EOS的影响。我们还通过通过变异方法使用相同的EOS来检查核和核子组成的差异的影响，但在核丰度计算中采用两种不同的治疗方法。我们对采用三个EOSS的核心爆发超新星进行数值模拟。我们还对70 s的原始恒星冷却进行了长期演化的数值模拟。我们表明，不同组成模型的影响非常明显，就像在重力崩溃，弹跳和冲击传播中的不同处理方法中一样。即使在EOS计算均匀物质中使用相同的处理方法，原始恒星的冷却和产生的中微子发射也会受到组成差异的影响。
We study the influence of hot and dense matter in core-collapse supernovae by adopting up-to-date nuclear equation of state (EOS) based on the microscopic nuclear many-body frameworks. We explore effects of EOS based on the Dirac Brueckner Hartree-Fock theory through comparisons with those based on the variational method. We also examine effects of the differences in the composition of nuclei and nucleons by using the same EOS by the variational method but employing two different treatments in computations of nuclear abundances. We perform numerical simulations of core-collapse supernovae adopting the three EOSs. We also perform numerical simulations of the long-term evolution over 70 s of the proto-neutron star cooling. We show that impacts by different modeling of composition are remarkable as in those by different treatments of uniform matter in the gravitational collapse, bounce, and shock propagation. The cooling of proto-neutron star and the resulting neutrino emission are also affected by the compositional difference even if the same treatment in computing uniform matter of EOS.
