论文标题
具有核饱和参数的中子星质量公式
Neutron star mass formula with nuclear saturation parameters
论文作者
论文摘要
我们得出了中子星质量和重力红移的经验公式，这是核饱和参数的中央密度和特定组合的函数，核饱和参数适用于以中央密度高达三倍的核饱和密度构建的恒星模型。结合了两个经验公式，也估计了中子星半径。实际上，我们发现可以在$ \ sim 10 \％$（百分之几（百分之几）的精度内估算中子星质量（半径），通过将与我们的经验公式评估的质量和半径与用特定状态确定的质量公式进行比较。由于我们的经验公式直接将中子星质量和半径与核饱和参数连接起来，因此可以通过通过核实验约束的核饱和参数的特定值讨论中子星的性质。
We derive the empirical formulas for the neutron star mass and gravitational redshift as a function of the central density and specific combination of the nuclear saturation parameters, which are applicable to the stellar models constructed with the central density up to threefold nuclear saturation density. Combining the both empirical formulas, one also estimates the neutron star radius. In practice, we find that the neutron star mass (radius) can be estimated within $\sim 10\%$ (a few percent) accuracy by comparing the mass and radius evaluated with our empirical formulas to those determined with the specific equation of state. Since our empirical formulas directly connect the neutron star mass and radius to the nuclear saturation parameters, one can discuss the neutron star properties with the specific values of nuclear saturation parameters constrained via nuclear experiments.
