Planck star phenomenology
  It is possible that black holes hide a core of Planckian density, sustained
by quantum-gravitational pressure. As a black hole evaporates, the core
remembers the initial mass and the final explosion occurs at macroscopic scale.
We investigate possible phenomenological consequences of this idea. Under
several rough assumptions, we estimate that up to several short gamma-ray
bursts per day, around 10 MeV, with isotropic distribution, can be expected
coming from a region of a few hundred light years around us.
