Interstellar gas heating by primordial black holes

@article{Takhistov2022InterstellarGH,
  title={Interstellar gas heating by primordial black holes},
  author={Volodymyr Takhistov and Philip Lu and Graciela B. Gelmini and Kohei Hayashi and Yoshiyuki Inoue and Alexander Kusenko},
  journal={Journal of Cosmology and Astroparticle Physics},
  year={2022},
  volume={2022}
}
Interstellar gas heating is a powerful cosmology-independent observable for exploring the parameter space of primordial black holes (PBHs) formed in the early Universe that could constitute part of the dark matter (DM). We provide a detailed analysis of the various aspects for this observable, such as PBH emission mechanisms. Using observational data from the Leo T dwarf galaxy, we constrain the PBH abundance over a broad mass-range, M PBH ∼ 𝒪(1)M ⊙ − 107 M ⊙, relevant for the recently… 
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