用天文观测约束参数化中子星状态方程
Constraining the parameterized neutron star equation of state with astronomical observations
摘要：
我们利用唯象参数化的分段多方状态方程来研究中子星的各种性质。我们调查这些状态方程的遵守与几个天文观测。我们还表明，分数转动惯量的理论估计不能解释所有观察到的脉冲星毛刺。我们将地壳模拟为一个实心球壳来计算快速自旋中子星的分数转动惯量。我们还表明，在一个简单的磁偶极子辐射模型与不同的转动惯量的制动指数偏离观测数据显着。随着理论和观测的发展，分数转动惯量和制动指数可以作为中子星状态方程的观测约束条件。
英文摘要：
We utilise the phenomenologically parameterized piecewise polytropic equations of state to study various neutron star properties. We investigate the compliance of these equations of state with several astronomical observations. We also demonstrate that the theoretical estimates of the fractional moment of inertia cannot explain all the pulsar glitches observed. We model the crust as a solid spheroidal shell to calculate the fractional moment of inertia of fast-spinning neutron stars. We also show that the braking index obtained in a simple magnetic dipole radiation model with a varying moment of inertia deviates significantly from the observed data. Future developments in both theory and observations may allow us to use the fractional moment of inertia and braking index as observational constraints for neutron star equation of state.
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