论文标题
广义天际星星的准宇宙关系
Quasi-universal relations for generalized Skyrme stars
论文作者
论文摘要
Yagi and Yunes于2013年首次提出，Quasi Universal \ emph {i-love-Q关系}由惯性时刻，自旋诱导的四极力矩与中性星星的电动四极性变形性之间的一系列关系组成，中子星的中性星可独立于状态（eos）$ 1 $ $ $ $ \ f。在这项工作中，我们表明，这些关系适用于不同的基于天际的核物质EO，以及不同爱因斯坦-BPS-Skyrme模型的星形解决方案，其中一些甚至没有提出预性状态方程。此外，分析了其他准宇宙关系，并与最近的GW观察结果一起，我们使用它们来选择更好地再现观测值的广义Skyrme模型。我们的结果重申了\ emph {i-love-q}关系的普遍性，以及广义的天际模型对描述中子恒星内的核物质的适用性。
First proposed in 2013 by Yagi and Yunes, the quasi-universal \emph{I-Love-Q relations} consist of a set of relations between the moment of inertia, the spin-induced quadrupole moment and the electric quadrupolar tidal deformability of neutron stars which are independent of the Equation of State (EoS) within an accuracy of $\sim1\%$. In this work, we show that these relations hold for different Skyrme-based nuclear matter EoS and also for the star-like solutions of different Einstein-BPS-Skyrme-models, some of which do not even present a barotropic equation of state. Further, other quasi-universal relations are analyzed, and together with recent GW observations, we use them to select the generalized Skyrme model that better reproduces observations. Our results reaffirm both the universality of the \emph{I-Love-Q} relations and the suitability of generalized Skyrme models to describe nuclear matter inside neutron stars.
