arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2103.14386astro-ph.HEnucl-th
收藏

用变分方法得到的核物质状态方程对恒星核坍缩和中微子发射的数值研究

Numerical Study of Stellar Core Collapse and Neutrino Emission Using the Nuclear Equation of State Obtained by the Variational Method

Ken'ichiro Nakazato, Kohsuke Sumiyoshi, Hajime Togashi

摘要:

采用基于微观变分计算的状态方程,结合真实的核力,对大质量恒星的核塌缩过程进行了数值模拟。初始质量分别为$15M_\odot$、$9.6M_\odot$和$30M_\odot$的先驱体模型分别作为普通核心坍缩超新星激波失速、低质量超新星成功爆炸和黑洞形成的例子。此外,从恒星坍缩发射的中微子进行了评估。然后,变分状态方程被证实在所有情况下工作得很好。我们还研究了恒星坍缩的动力学、热结构和中微子发射对状态方程的依赖性。

英文摘要:

Core-collapse simulations of massive stars are performed using the equation of state (EOS) based on the microscopic variational calculation with realistic nuclear forces. The progenitor models with the initial masses of $15M_\odot$, $9.6M_\odot$, and $30M_\odot$ are adopted as examples of the ordinary core-collapse supernova with a shock stall, the low-mass supernova with a successful explosion, and the black hole formation, respectively. Moreover, the neutrinos emitted from the stellar collapse are assessed. Then, the variational EOS is confirmed to work well in all cases. The EOS dependences of the dynamics, thermal structure, and neutrino emission of the stellar collapse are also investigated.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑