奇异星：紧凑天体家族中有趣的一员
Strange Stars : An interesting member of the compact object family
摘要：
我们研究了奇异星在零温度和有限温度下的性质，并在γ射线，X射线和射电天文学中寻找奇异星的特征。我们建立了奇异夸克物质的物态方程，求解TOV方程，得到了奇异星的结构。奇异星的最大质量随着温度的升高而减小，因为在高温下，EoS变得更软。奇异星的一个重要方面是，表面张力取决于恒星的大小和结构，并且明显大于常规值。转动惯量是致密星的另一个重要参数，通过比较理论值和观测值，可以约束致密物质状态方程。我们希望这种方法能帮助我们确定双脉冲星系统PSR J 0737 -3039的成员是中子星还是奇异星。
英文摘要：
We have studied strange star properties both at zero temperature and at finite temperatures and searched signatures of strange stars in gamma-ray, x-ray and radio astronomy. We have a set of Equations of State (EoS) for strange quark matter (SQM) and solving the TOV equations, we get the structure of strange stars. The maximum mass for a strange star decreases with the increase of temperature, because at high temperatures, the EoS become softer. One important aspect of strange star is that, surface tension depends on the size and structure of the star and is significantly larger than the conventional values. Moment of inertia is another important parameter for compact stars as by comparing theoretical values with observed estimate, it is possible to constrain the dense matter Equation of State. We hope that this approach will help us to decide whether the members of the double pulsar system PSR J0737-3039 are neutron stars or strange stars.
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