论文标题
通过冲击感应的冷中子恒星形成的最大杂种恒星质量
Maximum mass of hybrid star formed via shock induced phase transition in cold neutron stars
论文作者
论文摘要
本文研究了冷中子星的冲击诱导相变过的相位过渡后形成的夸克恒星的最大质量极限。通过采用满足当前质量约束的状态状态和夸克方程，我们使用燃烧的绝热条件来找到这种限制。燃烧的绝热状况导致在中间密度范围内局部或全球最大压力。最大压力对应于相变的杂种恒星的局部或全局最大质量。如果我们具有局部最大质量，则相变的相位通常是放热的。放热或吸热相的标准取决于夸克压力/能量比/能量/能量/能量/能量/能量比小或大于1。我们发现冷中子恒星中的放热相位过渡通常会导致杂种恒星的质量小于父母中性恒星的质量。对于全球最大压力，相转换是吸热的。因此，一个获得全球最大质量。如果在相变过程中存在一些外部能源，则可以形成比相变的局部最大质量大的杂种恒星。但是，在某些情况下，即使是大型杂种恒星也可以形成具有全球最大压力的EOSS的放热相变。
This article studies the maximum mass limit of the quark star formed after the shock-induced phase transition of a cold neutron star. By employing hadronic and quark equation of state that satisfies the current mass bound, we use combustion adiabat conditions to find such a limit. The combustion adiabat condition results in a local or a global maximum pressure at an intermediate density range. The maximum pressure corresponds to a local or global maximum mass for the phase transformed hybrid star. The phase transition is usually exothermic if we have a local maximum mass. The criteria for exothermic or endothermic phase transition depend on whether the quark pressure/energy ratios to nuclear pressure/energy are smaller or greater than 1. We find that exothermic phase transition in a cold neutron star usually results in hybrid stars whose mass is smaller than a parent neutron star. The phase transition is endothermic for a global maximum pressure; thereby, one gets a global maximum mass. Hybrid stars much massive than phase transformed local maximum mass can be formed, provided there is some external energy source during the phase transition process. However, for some cases, even massive hybrid stars can form with exothermic phase transition for EoSs having global maximum pressure.
