Comment on the CMB constraints on black hole dark matter


  Daniel Aloni  ,  Kfir Blum  ,  Raphael Flauger  
Weizmann institute of science
The university of Texas at Austin

We calculate CMB constraints on primordial black holes, assuming that dark matter is made out of black holes only. We present a critical reanalysis of some of the calculations that are currently used in the literature. Our preliminary results suggest that CMB constraints do not exclude black holes DM in the MACHO-WB gap.