论文标题
中子星中的超音音，脱糊和声速
Hyperons, deconfinement and the speed of sound in neutron stars
论文作者
论文摘要
研究了Hyperons的存在和向固定夸克物质的相变对中子恒星中声速的影响。为此，使用了由Hadron的协方差田间理论组成的复合描述，其中一个用于未结合的夸克。假定具有状态方程的连续和单调变化的相变。这些预测与有关孤立的中子恒星以及二元系统的最新观察数据形成对比。最终仅从六个不同的描述获得了一个候选人。根据目前的计算，超子的发作会导致声音的平衡速度超过保形极限。关于声音速度对中子恒星振荡速度的影响的最新工作的定性一致性。
The effects of the presence of hyperons and a phase transition to deconfined quark matter on the speed of sound in neutron stars is investigated. For this purpose a composite description consisting of a model of the covariant field theory of hadrons and one for unbound quarks are used. A phase transition with continuous and monotonous variation of the equation of state is assumed. The predictions are contrasted with recent observational data on isolated neutron stars as well as on binary systems. Only one candidate is finally obtained from six different descriptions. According to the present calculations the onset of the hyperons causes the equilibrium speed of sound to exceed the conformal limit. Qualitative agreement with recent work about the influence of the speed of sound on the g-modes of oscillation in neutron stars is obtained.
