Relativistic Coulomb screening in pulsational pair instability supernovae
Relativistic Coulomb screening in pulsational pair instability supernovae
复制标题
脉动对不稳定性超新星中的相对论库仑筛选
DOI：
10.1051/0004-6361/202142433
复制
发表时间：
2022
影响因子：
6.5
通讯作者：
Mathews, G.
中科院分区：
文献类型：
--
作者：
Famiano, M. A.;Mori, K.;Balantekin, A. B.;Kajino, T.;Kusakabe, M.;Mathews, G.
脉动对不稳定超新星（PPISNe）和对不稳定超新星（PISNe）是背景电子-正电子对等离子体存在时热核失控的结果。因此，它们的演化和由此产生的黑洞质量可能会受到电子对等离子体引起的屏蔽校正的影响。目的探索了PISNe和PPISNe对相对论弱屏蔽的敏感性。方法本文开发了一个包含相对论对产生影响的弱屏蔽模型，并在接近和超过电子对产生阈值的温度下应用。这种筛选模型取代了天体物理学中常用的“经典”筛选。对弱屏蔽电子德拜长度的修改被纳入计算上易于处理的分析形式中。结果在 PPISNe 中，发现 BH 质量在高温下有所增加，尽管这种增加很小。还发现BH塌陷发生在更早的时间，并且脉动形态也发生变化。除了由此产生的 BH 质量之外，还分析了对脉动周期筛选模型、脉冲结构、PPISN 到 PISN 转变以及 BH 质量间隙移动的敏感性。还检查了喷射物质的成分的依赖性。
ContextPulsational pair-instability supernovae (PPISNe) and pair instability supernovae (PISNe) are the result of a thermonuclear runaway in the presence of a background electron-positron pair plasma. As such, their evolution and resultant black hole masses could possibly be affected by screening corrections due to the electron pair plasma.AimsThe sensitivity of PISNe and PPISNe to relativistic weak screening has been explored.MethodsIn this paper a weak screening model that includes effects from relativistic pair production has been developed and applied at temperatures approaching and exceeding the threshold for pair production. This screening model replaces “classical” screening commonly used in astrophysics. Modifications to the weak screening electron Debye length were incorporated in a computationally tractable analytic form.ResultsIn PPISNe the BH masses were found to increase somewhat at high temperatures, though this increase is small. The BH collapse is also found to occur at earlier times, and the pulsational morphology also changes. In addition to the resultant BH mass, the sensitivity to the screening model of the pulsational period, the pulse structure, the PPISN-to-PISN transition, and the shift in the BH mass gap has been analyzed. The dependence of the composition of the ejected mass was also examined.