Novel constraints on mixed dark-matter scenarios of primordial black holes and WIMPs

@article{Boucenna2018NovelCO,
  title={Novel constraints on mixed dark-matter scenarios of primordial black holes and WIMPs},
  author={Sofiane Boucenna and Florian Kuhnel and Tommy Ohlsson and Luca Visinelli},
  journal={Journal of Cosmology and Astroparticle Physics},
  year={2018}
}
We derive constraints on mixed dark-matter scenarios consisting of primordial black holes (PBHs) and weakly interacting massive particles (WIMPs). In these scenarios, we expect a density spike of the WIMPs that are gravitationally bound to the PBHs, which results in an enhanced annihilation rate and increased indirect detection prospects. We show that such scenarios provide strong constraints on the allowed fraction of PBHs that constitutes the dark matter, depending on the WIMP mass $m_{\chi… 

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