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Direct Detection of Hawking Radiation from Asteroid-Mass Primordial Black Holes

Profumo, Stefano; Coogan, Adam; Morrison, Logan

Light, asteroid-mass primordial black holes, with lifetimes in the range between hundreds to several millions times the age of the Universe, are well-motivated candidates for the cosmological dark matter. Using archival COMPTEL data, we improve over current constraints on the allowed parameter space of primordial black holes as dark matter by stud…