论文标题
通过原始黑洞来增强小规模结构，并对Sub-Gev暗物质歼灭产生影响
Boosting small-scale structure via primordial black holes and implications for sub-GeV dark matter annihilation
论文作者
论文摘要
我们探讨了由于在存在原始黑洞（PBHS）的情况下，暗物质（DM）的an灭（DM）被提高的可能性，构成了DM的子组成部分。 PBH可以在触发早期结构形成的小尺度上产生熵波动，整个DM的很大一部分可以驻留在这些折叠的物体中，这些物体在高红移（$ z \ gtrsim 100 $）下形成。因此，这种早期形成的Minihalos的密度比常规场景（没有PBH）的密度更高，并且对潮汐破坏更具弹性。我们对DM子结构引起的歼灭的方案特别是光（$ <1 $ GEV）DM，与PBHS存在的情况下，与更重的DM相比，它的探索较少。
We explore the possibility that the annihilation of dark matter (DM) is boosted due to enhanced substructure in the presence of primordial black holes (PBHs) which constitute a sub-component of DM. The PBHs can generate entropy fluctuations at the small scales which trigger early structure formation, and a large fraction of the whole DM can reside in these collapsed objects that formed at high redshift ($z\gtrsim 100$). Such early forming minihalos consequently possess higher densities than those in the conventional scenarios (without PBHs) and would be more resilient to tidal disruptions. Our scenarios of the annihilation boost due to DM substructures are of particular interest for light ($< 1$ GeV) DM which has been less explored compared to heavier DM in the presence of the PBHs.
