Cosmic microwave background limits on accreting primordial black holes

@article{AliHaimoud2017CosmicMB,
  title={Cosmic microwave background limits on accreting primordial black holes},
  author={Yacine Ali-Haimoud and Marc Kamionkowski},
  journal={Physical Review D},
  year={2017},
  volume={95},
  pages={043534}
}
Interest in the idea that primordial black holes (PBHs) might comprise some or all of the dark matter has recently been rekindled following LIGO’s first direct detection of a binary-black-hole merger. Here we revisit the effect of accreting PBHs on the cosmic microwave background (CMB) frequency spectrum and the angular temperature and polarization power spectra. We compute the accretion rate and luminosity of PBHs, accounting for their suppression by Compton drag and Compton cooling by CMB… 
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