论文标题
原始震撼夸克之星结构
Proto-Strange Quark Star Structure
论文作者
论文摘要
在本文中，我们调查了新生儿奇怪的夸克恒星，并具有恒定的熵。我们还使用MIT袋模型在两种情况下计算热力学特性。密度依赖的袋子常数和固定袋常数（b = 90 meV）。我们表明，通过使用密度依赖性袋常数并增加熵，状态方程变得更硬。此外，我们表明该系统的绝热指数在高密度下达到4/3。稍后，我们使用状态方程和静水平衡的一般相对论计算奇怪的夸克之星的结构，即Tolman-Oppenheimer-Volkoff（TOV）方程。我们表明，当我们在固定中央能量密度下使用密度依赖性袋常数时，恒星的重力质量通过增加熵而减小，最大重力质量会更大。结果表明，该系统的质量 - 拉迪乌斯关系遵守M r^ 3的不同情况。最后，我们表明，对于给定的恒星质量，考虑到固定的袋子常数，奇怪的夸克星的最大重力红移发生在较大的熵值下。
In this paper, we investigate the newborn strange quark stars with constant entropy. We also use the MIT bag model to calculate the thermodynamic properties in two cases; the density-dependent bag constant and the fixed bag constant (B = 90 MeV). We show that the equation of state becomes stiffer by using the density dependent bag constant and by increasing the entropy. Furthermore, we show that the adiabatic index of the system reaches to 4/3 at high densities. Later, we calculate the structure of a strange quark star using the equation of state and the general relativistic equations of hydrostatic equilibrium, the Tolman-Oppenheimer-Volkoff (TOV) equations. We show that the gravitational mass of the star decreases by increasing the entropy and the maximum gravitational mass is larger when we use the density-dependent bag constant at fixed central energy density. It is shown that the mass-radius relation for this system obeys M R^ 3 for different cases of the calculations. Finally, we show that for a given stellar mass considering the fixed bag constant, the maximum gravitational red shift of a strange quark star occurs at larger values of entropy.
