论文标题

从耗散暗物质的紧凑物体质量上的下限

A Lower Bound on the Mass of Compact Objects from Dissipative Dark Matter

论文作者

Gurian, James, Ryan, Michael, Schon, Sarah, Jeong, Donghui, Shandera, Sarah

论文摘要

我们研究了在耗散深色的光环中形成的最小深色紧凑物体的最小质量,并表明与所有当前观察结果一致的简单原子 - 漆黑物体模型可以产生低质量碎片,这些碎片可以演变成恒星天文学所禁止的紧凑物体。我们通过在两个极端假设的密度演化下追踪均匀密度元件的热化学演化来对黑晕致密核的崩溃进行建模:静水平衡和无压力塌陷。然后,我们根据这些计算中达到的最低温度来计算不限制的最小片段质量。

We study the minimum mass of dark compact objects formed in dissipative dark-matter halos and show that the simple atomic-dark-matter model consistent with all current observations can create low-mass fragments that can evolve into compact objects forbidden by stellar astrophysics. We model the collapse of the dark halo's dense core by tracing the thermo-chemical evolution of a uniform-density volume element under two extreme assumptions for density evolution: hydrostatic equilibrium and pressure-free collapse. We then compute the opacity-limited minimum fragment mass from the minimum temperature achieved in these calculations.

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