论文标题
双星的热演化中的紧凑性
Compactness in the Thermal Evolution of Twin Stars
论文作者
论文摘要
在这项工作中，我们第一次研究双星对的热演化，即恒星，恒星具有相同的质量，但半径不同和紧凑。我们收集了可用的状态方程，该方程将其起源于稳定的紧凑型恒星的第二个分支，其核心中有夸克。对于每个状态方程，我们都会研究恒星内部的粒子组成以及每个双胞胎随着时间的变化而有所不同，这取决于中央密度/压力以及随之而来的urca冷却过程阈值的越过。我们发现，尽管一般恒星热的演化取决于质量和粒子组成，但具有一个状态方程，但只有在紧凑度上有很大差异的双对，才能通过如何冷却来清楚地区分。
In this work, we study for the first time the thermal evolution of twin star pairs, i.e., stars that present the same mass but different radius and compactness. We collect available equations of state that give origin to a second branch of stable compact stars with quarks in their core. For each equation of state, we investigate the particle composition inside stars and how differently each twin evolves over time, which depends on the central density/pressure and consequent crossing of the threshold for the Urca cooling process. We find that, although the general stellar thermal evolution depends on mass and particle composition, withing one equation of state, only twin pairs that differ considerably on compactness can be clearly distinguished by how they cool down.
