Search for the evaporation of primordial black holes with H.E.S.S.
Date
2023
Authors
Aharonian, F.
Ait Benkhali, F.
Aschersleben, J.
Böttcher, M.
Backes, M.
Barbosa Martins, V.
Batzofin, R.
Becherini, Y.
Berge, D.
Bi, B.
Editors
Advisors
Journal Title
Journal ISSN
Volume Title
Type:
Journal article
Citation
Journal of Cosmology and Astroparticle Physics, 2023; 2023(4):040-1-040-17
Statement of Responsibility
F. Aharonian ... P. Marinos ... G. Rowell ... et al. (The H.E.S.S. collaboration)
Conference Name
Abstract
Primordial Black Holes (PBHs) are hypothetical black holes predicted to have been formed from density fluctuations in the early Universe. PBHs with an initial mass around 10¹⁴–10¹⁵ g are expected to end their evaporation at present times in a burst of particles and very-high-energy (VHE) gamma rays. Those gamma rays may be detectable by the High Energy Stereoscopic System (H.E.S.S.), an array of imaging atmospheric Cherenkov telescopes. This paper reports on the search for evaporation bursts of VHE gamma rays with H.E.S.S., ranging from 10 to 120 seconds, as expected from the final stage of PBH evaporation and using a total of 4816 hours of observations. The most constraining upper limit on the burst rate of local PBHs is 2000 pc⁻³ yr⁻¹ for a burst interval of 120 seconds, at the 95% confidence level. The implication of these measurements for PBH dark matter are also discussed.
School/Discipline
Dissertation Note
Provenance
Description
Published April 14, 2023
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Rights
© 2023 IOP Publishing Ltd and Sissa Medialab