论文标题
通过积聚磁盘发光度将原始黑洞限制为暗物质的一小部分
Constraining primordial black holes as a fraction of dark matter through accretion disk luminosity
论文作者
论文摘要
在本文中，我们考虑了以下假设：暗物质的分数可以由原始黑洞（PBHS）构成。为了测试这种可能性，我们确定了由PBH源制成的暗物质包膜中的静态黑洞的观测特性。研究了由于这种物理系统而引起的几何形状的相应修改，特别关注螺旋星系中的积聚磁盘光度。通过修改磁盘光度和运动量数量，分析了PBH存在的影响。因此，鉴于最新的理论界限，我们讨论了对PBH丰度的可能限制。我们的研究结果表明，合适的PBH质量为$ m_ \ text {pbh} \ in [10^6,10^{12}] m_ \ odot $ for pbh级分$ f_ \ f_ \ text {pbh} \ in [10^{ - 3}，1] $。特别是，与暗物质的指数球密度曲线的预测进行比较表明，对于$ f_ \ text {pbh} = 1 $和$ m_ \ text {pbh} = 10^6 m_ \ odot $，可以实现最佳匹配配置。讨论了有关当前关于原始黑洞物理学的知识的后果。
In this paper, we consider the hypothesis that fractions of dark matter could be constituted by primordial black holes (PBHs). To test this possibility, we work out the observational properties of a static black hole embedded in the dark matter envelope made of a PBH source. The corresponding modifications of geometry due to such a physical system are investigated, with a particular focus on the accretion disk luminosity in spiral galaxies. The impact of the PBH presence is analyzed through modification of the disk luminosity and kinematic quantities. Thus, we discuss possible constraints on the PBH abundance in view of the most recent theoretical bounds. The results of our study indicate that suitable PBH masses are $M_\text{PBH}\in[10^6,10^{12}]M_\odot$ for PBH fractions $f_\text{PBH}\in[10^{-3},1]$. In particular, a comparison with the predictions of the exponential sphere density profile for dark matter suggests that the best-matching configuration is achieved for $f_\text{PBH}=1$ and $M_\text{PBH}=10^6 M_\odot$. Consequences with respect to the current knowledge on primordial black hole physics are discussed.
