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

Discussion timeslot (ZOOM-Meeting): 20. July 2021 - 12:00
ZOOM-Meeting URL: https://desy.zoom.us/j/96969970711
ZOOM-Meeting ID: 96969970711
ZOOM-Meeting Passcode: ICRC2021
Corresponding Session: https://icrc2021-venue.desy.de/channel/40-Dark-Matter-Indirect-Detection-and-Cosmological-Substructures-DM/81
Live-Stream URL: https://icrc2021-venue.desy.de/livestream/Discussion-07/8

Abstract:
"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.rnThe current upper limits on explosion rates are on the order of $10^4-10^5 pc^{-3}yr^{-1}$.rnIn 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."

Authors: Jean-Francois Glicenstein | Francois Brun | Thomas Tavernier | Vincent Marandon | for the H.E.S.S. collaboration
Collaboration: H.E.S.S.

Indico-ID: 477
Proceeding URL: https://pos.sissa.it/395/518