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https://hdl.handle.net/2440/139236
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Type: | Journal article |
Title: | Search for the evaporation of primordial black holes with H.E.S.S. |
Author: | Aharonian, F. Ait Benkhali, F. Aschersleben, J. Böttcher, M. Backes, M. Barbosa Martins, V. Batzofin, R. Becherini, Y. Berge, D. Bi, B. Boisson, C. Bolmont, J. De Bony De Lavergne, M. Borowska, J. Bradascio, F. Brose, R. Brun, F. Bruno, B. Bulik, T. Burger-Scheidlin, C. et al. |
Citation: | Journal of Cosmology and Astroparticle Physics, 2023; 2023(4):040-1-040-17 |
Publisher: | IOP Publishing |
Issue Date: | 2023 |
ISSN: | 1475-7516 1475-7516 |
Statement of Responsibility: | F. Aharonian ... P. Marinos ... G. Rowell ... et al. (The H.E.S.S. collaboration) |
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. |
Keywords: | gamma ray experiments; primordial black holes; dark matter experiments |
Description: | Published April 14, 2023 |
Rights: | © 2023 IOP Publishing Ltd and Sissa Medialab |
DOI: | 10.1088/1475-7516/2023/04/040 |
Published version: | http://dx.doi.org/10.1088/1475-7516/2023/04/040 |
Appears in Collections: | Physics publications |
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