9–11 Sept 2024
Catania
Europe/Rome timezone

Regular primordial black hole constraint from isotropic gamma- ray background

9 Sept 2024, 17:45
25m
Villa Cerami (Catania)

Villa Cerami

Catania

Via Crociferi 91

Speaker

Marco Calzà (Istituto Nazionale di Fisica Nucleare)

Description

The literature is flourishing in exotic and theoretical
black hole solutions realized in the framework of general relativity
or modified gravity theories to cure the singularity affecting the
vacuum solutions of general relativity. On the other hand, the
Schwarzschild solution is the standard lore when computing constraints
on primordial black hole abundance arising from the isotropic diffuse
gamma-ray background. In this study, we present an extension of such
constraint by considering a sample of the most common regular black
hole solution. We show that the constraint changes and the so-called
asteroid mass width, where primordial black holes may contribute to
the totality of the dark matter, can be enlarged or closed by those
non-Schwarzshild solutions.

Primary author

Marco Calzà (Istituto Nazionale di Fisica Nucleare)

Presentation materials