Effects of the symmetry energy on properties of neutron star crusts near the neutron drip density
Effects of the symmetry energy on properties of neutron star crusts near the neutron drip density
复制标题
对称能对中子滴密度附近中子星壳性质的影响
DOI：
10.1103/physrevc.90.045802
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发表时间：
2014-10
影响因子：
3.1
通讯作者：
Shen H.
中科院分区：
文献类型：
--
作者：
Bao S. S.;Hu J. N.;Zhang Z. W.;Shen H.
研究了对称能对中子星星壳中中子滴密度和核性质的影响。本文采用相对论平均场模型和托马斯-费米近似计算了中子滴点附近的非均匀物质。中子滴密度和地壳成分与对称能及其斜率有关。我们比较了自洽的托马斯-费米近似与其他处理的表面和库仑能量，并发现这些有限尺寸效应在确定低密度的平衡态中起着至关重要的作用。
We study the effects of the symmetry energy on the neutron drip density and properties of nuclei in neutron star crusts. The nonuniform matter around the neutron drip point is calculated by using the Thomas--Fermi approximation with the relativistic mean-field model. The neutron drip density and the composition of the crust are found to be correlated with the symmetry energy and its slope. We compare the self-consistent Thomas--Fermi approximation with other treatments of surface and Coulomb energies and find that these finite-size effects play an essential role in determining the equilibrium state at low density.