Measuring the last burst of non-singular black holes

TL;DR

This paper explores the potential observational signatures of non-singular black hole decay, suggesting that emissions from old black holes could provide insights into quantum gravity effects through distinctive wavelength scaling and spectral distortions.

Contribution

It introduces a novel phenomenological approach to detect quantum gravity effects via astrophysical emissions from decaying non-singular black holes.

Findings

Potential radio and gamma-ray signals from old black hole explosions.

Distinctive wavelength scaling with distance can differentiate these signals.

Diffuse radiation spectrum shows unique distortions due to black hole decay.

Abstract

Non-perturbative quantum gravity prevents the formation of curvature singularities and may allow black holes to decay with a lifetime shorter than evaporation time. This, in connection with the existence of primordial black holes, could open a new window for quantum-gravity phenomenology. I discuss the possibility of observing astrophysical emissions from the explosion of old black holes in the radio and in the gamma wavelengths. These emissions can be discriminated from other astrophysical sources because of a peculiar way the emitted wavelength scales with the distance. The spectrum of the diffuse radiation produced by those objects presents a peculiar distortion due to this scaling.