Planck star phenomenology

TL;DR

This paper explores the phenomenology of Planck star models, suggesting that evaporating black holes with quantum-gravitational cores could produce observable gamma-ray bursts within our local universe.

Contribution

It provides a phenomenological framework for detecting Planck star signatures through gamma-ray bursts, linking quantum gravity effects to observable astrophysical phenomena.

Findings

Up to several short gamma-ray bursts per day predicted

Bursts expected around 10 MeV energy

Sources within a few hundred light years

Abstract

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.