12–23 Jul 2021
Online
Europe/Berlin timezone

Limits on primordial black hole evaporation from H.E.S.S. observations.

20 Jul 2021, 12:00
1h 30m
07

07

Talk DM | Dark Matter Discussion

Speaker

Dr Thomas Tavernier (IRFU, CEA Paris-Saclay)

Description

Primordial Black Holes are expected to be formed in the early Universe by the gravitational collapse of overdense regions, among other mechanism. They are also expected to loose their mass over time by the Hawking radiation process. As the rates of this radiation increase with temperature, the PBH evaporation should result in a violent explosion.
The current upper limits on explosion rates are on the order of $10^4-10^5 pc^{-3}yr^{-1}$.
In this contribution we'll present the results of a search for TeV $\gamma$-ray burst within timescale of few seconds, using nearly 5000 hours of H.E.S.S. data. The search algorithm and statistical estimation strategy will be presented as well as cosmological implications of this measurement.

Subcategory Experimental Results
Collaboration H.E.S.S.

Primary authors

Jean-Francois Glicenstein (IRFU-CEA Paris-Saclay) Francois Brun (CEA-Irfu) Dr Thomas Tavernier (IRFU, CEA Paris-Saclay) Dr Vincent Marandon (MPIK Heidelberg) for the H.E.S.S. collaboration

Presentation materials