低密度物态方程对中子星性质的影响
朱照寰;班淑芳;李俊;孟杰
【期刊名称】《高能物理与核物理》 【年(卷),期】2005(029)006
【摘要】Using the RMF theory to describe the neutron liquid region in the neutron star and the Fermi gas model or FMT, BPS, and BBP model to describe the crust of the neutron star (referred as Fermi gas+RMF and RMF* respectively), the properties of the neutron star are calculated and compared with those from the RMF theory. Although the EOS at low density has negligible influence on the maximum mass of the neutron star, and its corresponding central density, energy density, and pressure, it changes the mass-radius relationship of neutron stars considerably. The differences of the neutron star radius corresponding to maximum mass between the RMF theory and RMF* calculations are 0.23-0.33 km.%利用相对论平均场理论描述中子星的液体区域,Fermi气体模型或者FMT,BPS和BBP模型描述中子星外壳,分别称为Fermi gas+RMF和RMF*.计算了中子星性质并且和相对论平均场理论给出的结果进行比较.虽然低密度物态方程对中子星最大质量、中心密度、能量密度和压强的影响很小,但是它对中子星的质量半径关系改变很大.对应中子星的最大质量,RMF和RMF*之间的半径差别为0.23-0.33km. 【总页数】5页(565-569)
【关键词】中子星;中子星外壳;相对论平均场理论
低密度物态方程对中子星性质的影响
