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Tidal deformability of neutron stars with realistic nuclear energy density functionals

机译:中子恒星与现实核能密度函数的潮汐可变形性

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We investigate the constraints on the mass and radius of neutron stars by considering the tidal deformability in the merge of neutron star binaries. We employ models based on the Skyrme force and density-functional theory and select models that are consistent with empirical data of finite nuclei, measured properties of nuclear matter around the saturation density, and observation of the maximum mass of neutron stars. From the selected models, we calculate the Love number k(2), dimensionless tidal deformability Lambda, and mass-weighted deformability (Lambda) over tilde in the binary system. We find that all the models considered in this work give (Lambda) over tilde less than 800, which is the constraint obtained from the measurement of GW170817. The results from our models show a relationship between A and radius (Lambda similar to R-7.5) for a neutron star with a fixed mass of 1.4M(circle dot), which is consistent with the recent statistical analyses.
机译:考虑到中子星二进制二进制文件合并中的潮汐可变形性,我们研究了中子恒星质量和半径的约束。 我们采用基于Skyrme力和密度功能理论的模型,选择与有限核的经验数据一致的模型,围绕饱和密度的核物质的测量性能,观察最大质量的中子恒星。 从所选模型中,我们在二元体系中计算了在二元系统中的波浪上的LOVE Number K(2),无量值的潮汐可变性Lambda和大量加权可变形性(Lambda)。 我们发现,在这项工作中考虑的所有模型给予(Lambda)在小于800的波浪上,这是从GW170817的测量获得的约束。 我们模型的结果显示了一个和半径(Lambda类似于R-7.5类似的关系),用于固定质量为1.4m(圆点)的中子星,这与最近的统计分析一致。

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