Constraints on Primordial Black Holes with Extended Mass Functions

Jan 25, 2017
5 pages
Published in:
  • Phys.Rev.D 95 (2017) 8, 083508
  • Published: Apr 10, 2017
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Abstract: (APS)
Constraints on primordial black holes in the range 10-18  M⊙ to 103  M⊙ are reevaluated for a general class of extended mass functions. Whereas previous work has assumed that PBHs are produced with one single mass, instead there is expected to be a range of masses even in the case of production from a single mechanism; constraints therefore change from previous literature. Although tightly constrained in the majority of cases, it is shown that, even under conservative assumptions, primordial black holes in the mass range 10-10  M⊙ to 10-8  M⊙ could still constitute the entirety of the dark matter. This stresses both the importance for a comprehensive reevaluation of all respective constraints that have previously been evaluated only for a monochromatic mass function and the need to obtain more constraints in the allowed mass range.
Note:
  • 5 pages, 2 figures; v2: references added, minor changes
  • black hole: primordial
  • conservation law
  • dark matter