PRIMORDIAL BLACK HOLES, HAWKING RADIATION AND THE EARLY UNIVERSE
PRIMORDIAL BLACK HOLES, HAWKING RADIATION AND THE EARLY UNIVERSE
The 511 keV gamma emission from the galactic core may originate from a high concentration (~ 10 22 ) of primordial black holes (PBHs) in the core, each of whose Hawking radiation includes ~ 10 21 positrons per second. The PBHs we consider are taken as near the lightest with …