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Search for the evaporation of primordial black holes with HESS
Dublin Inst Adv Studies, Ireland;Max Planck Inst Kernphys, Germany.
Heidelberg Univ, Germany.
Univ Groningen, Netherlands.
North West Univ, South Africa.
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2023 (English)In: Journal of Cosmology and Astroparticle Physics, E-ISSN 1475-7516, no 4, article id 040Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
Institute of Physics Publishing (IOPP), 2023. no 4, article id 040
Keywords [en]
gamma ray experiments, primordial black holes, dark matter experiments
National Category
Astronomy, Astrophysics and Cosmology
Research subject
Physics, Astroparticle Physics
Identifiers
URN: urn:nbn:se:lnu:diva-123664DOI: 10.1088/1475-7516/2023/04/040ISI: 001004513900001Scopus ID: 2-s2.0-85153538419OAI: oai:DiVA.org:lnu-123664DiVA, id: diva2:1787615
Available from: 2023-08-14 Created: 2023-08-14 Last updated: 2024-10-22Bibliographically approved

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Becherini, YvonnePunch, Michael

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Department of Physics and Electrical Engineering
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