论文标题
具有现实状态核物质方程的快速旋转中子星
Rapidly rotating neutron stars with realistic nuclear matter equation of state
论文作者
论文摘要
我们对构建平衡模型的三个不同数值代码进行了比较。 （i）用于静态平衡配置的代码，（ii）hartle的实现 - thorne慢旋转近似，（iii）通过\ texttt {lorene}的完整爱因斯坦方程的数值解。我们的目的是在各种旋转频率下构建均匀旋转构型的序列，直至开普勒频率，以进行混合hadronic-Quark Matter EOS，其中两个单独的阶段之间提供了平滑的过渡。我们分别研究了通过Hartle的实现计算的结果 - thorne慢旋转近似和\ texttt {lorene/nrotstar}计算的结果之间的差异。我们得出的结论是，这些代码可以呈指数级的缓慢旋转和快速旋转方法之间的差异，在开普勒频率下旋转的最大质量配置达到6.67％。
We performed a comparison of three different numerical codes for constructing equilibrium models; (I) a code for static equilibrium configurations, (II) an implementation of the Hartle--Thorne slow-rotation approximation, (III) a numerical solution of the full Einstein equations by \texttt{LORENE}. We aimed to construct sequences of uniformly rotating configurations at various rotation frequencies up to the Keplerian frequency for a hybrid hadronic--quark matter EOS where a smooth transition is provided between two separate phases. We investigated the difference of between the results computed by the implementation of Hartle--Thorne slow-rotation approximation and by \texttt{LORENE/nrotstar}, respectively. We have conclude that the codes can the difference between the slow rotating and the fast-rotating approach increase exponentially, reaching 6.67% for the maximal mass configuration rotating at the Keplerian frequency.
