Predicting the moment of inertia of pulsar J0737-3039A from Bayesian modeling of the nuclear equation of state
Predicting the moment of inertia of pulsar J0737-3039A from Bayesian modeling of the nuclear equation of state
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DOI：
10.1103/physrevc.100.035802
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发表时间：
2018-10
影响因子：
3.1
通讯作者：
Y. Lim;J. Holt;Robert J. Stahulak
中科院分区：
文献类型：
--
作者：
Y. Lim;J. Holt;Robert J. Stahulak
我们从核状态方程的贝叶斯后验概率分布中研究了中子星的惯性矩，该分布结合了微观多体理论和有限核的经验数据的信息。我们以PSR J0737-3039A为研究对象，预测这颗1.338 M_sun中子星的转动惯量在$0.98 \乘以10^{45}$ g cm$^{2} < I < 1.48 \乘以10^{45}$ g cm$^{2}$，在95%可信水平上，而转动惯量的最可能值为$ $ tilde I = 1.35 \乘以10^{45}$ g cm$^{2}$。假设PSR J0737-3039A的惯性矩测量精度为10%，我们研究了中子星半径和潮汐变形能力的含义。我们还确定了惯性矩的地壳成分，并发现对于典型的1.3 M_sun < M < 1.5 M_sun的中子星，地壳贡献了总惯性矩的1% - 6%，低于解释在强中子夹带情况下脉冲星大故障所需的水平。
We investigate neutron star moments of inertia from Bayesian posterior probability distributions of the nuclear equation of state that incorporate information from microscopic many-body theory and empirical data of finite nuclei. We focus on PSR J0737-3039A and predict that for this 1.338 M_sun neutron star the moment of inertia lies in the range $0.98 \times 10^{45}$ g cm$^{2} < I < 1.48 \times 10^{45}$ g cm$^{2}$ at the 95% credibility level, while the most probable value for the moment of inertia is $\tilde I = 1.35 \times 10^{45}$ g cm$^{2}$. Assuming a measurement of the PSR J0737-3039A moment of inertia to 10% precision, we study the implications for neutron star radii and tidal deformabilities. We also determine the crustal component of the moment of inertia and find that for typical neutron star masses of 1.3 M_sun < M < 1.5 M_sun the crust contributes 1% - 6% of the total moment of inertia, below what is needed to explain large pulsar glitches in the scenario of strong neutron entrainment.