论文标题
原始黑洞（包括暗物质晕机）的宇宙微波背景范围
Cosmic microwave background bounds on primordial black holes including dark matter halo accretion
论文作者
论文摘要
即使大量（$ 10 \，m_ \ odot \ Lessim m \ Lessim 10^4 m_ \ odot $）原始黑洞（PBHS）只能说明宇宙中暗物质的一小部分（DM），它们可能仍然负责由ligo/vir a and vir a and vergo and Grom and Grom and Grom and Grom and Grom and Groggo，或者是/或行动。 （SMBHS）已经在高红移（$ z \ gtrsim 6 $）上观察到。在存在主要的非PBH DM组件的情况下，CMB通过改变的电离历史设定的边界将被修改。我们通过玩具模型和专用的数值模拟来重新审视PBH周围DM光晕的宇宙学积聚，从而得出了更新的CMB界限，这也考虑到了最后的Planck数据发布。我们证明，这些约束在质量$ m \ gtrsim 20-50 \，m_ \ odot $（取决于积分物理学的不确定性）上，达到$ f _ {\ rm pbh} <3 \ 3 \ times 10^{ - 9} $ m m \ sim $ m m \ os 10^^4.4;尽管如此，这些紧密的边界仍然与SMBH大种子的原始起源的假设一致。
Even if massive ($10\,M_\odot \lesssim M \lesssim 10^4 M_\odot$) primordial black holes (PBHs) can only account for a small fraction of the dark matter (DM) in the universe, they may still be responsible for a sizable fraction of the coalescence events measured by LIGO/Virgo, and/or act as progenitors of the supermassive black holes (SMBHs) observed already at high redshift ($z\gtrsim 6$). In presence of a dominant, non-PBH DM component, the bounds set by CMB via an altered ionization history are modified. We revisit the cosmological accretion of a DM halo around PBHs via toy models and dedicated numerical simulations, deriving updated CMB bounds which also take into account the last Planck data release. We prove that these constraints dominate over other constraints available in the literature at masses $M\gtrsim 20-50\,M_\odot$ (depending on uncertainty in accretion physics), reaching the level $f_{\rm PBH}<3\times 10^{-9}$ around $M\sim 10^{4}\,M_\odot$. These tight bounds are nonetheless consistent with the hypothesis of a primordial origin of the SMBH massive seeds.
