Search for a diffuse flux of photons with energies above tens of PeV at the Pierre Auger Observatory
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F25%3A00640197" target="_blank" >RIV/68378271:_____/25:00640197 - isvavai.cz</a>
Alternative codes found
RIV/00216208:11320/25:10510628 RIV/61989592:15310/25:73632227
Result on the web
<a href="https://hdl.handle.net/11104/0370623" target="_blank" >https://hdl.handle.net/11104/0370623</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/1475-7516/2025/05/061" target="_blank" >10.1088/1475-7516/2025/05/061</a>
Alternative languages
Result language
angličtina
Original language name
Search for a diffuse flux of photons with energies above tens of PeV at the Pierre Auger Observatory
Original language description
Diffuse photons of energy above 0.1 PeV, produced through the interactions between cosmic rays and either interstellar matter or background radiation fields, are powerful tracers of the distribution of cosmic rays in the Galaxy. Furthermore, the measurement of a diffuse photon flux would be an important probe to test models of super-heavy dark matter decaying into gamma-rays. In this work, we search for a diffuse photon flux in the energy range between 50 PeV and 200 PeV using data from the Pierre Auger Observatory. For the first time, we combine the air-shower measurements from a 2 km2 surface array consisting of 19 water-Cherenkov surface detectors, spaced at 433 m, with the muon measurements from an array of buried scintillators placed in the same area. Using 15 months of data, collected while the array was still under construction, we derive upper limits to the integral photon flux ranging from 13.3 to 13.8 km-2 sr-1 yr-1 above tens of PeV. We extend the Pierre Auger Observatory photon search program towards lower energies, covering more than three decades of cosmic-ray energy. This work lays the foundation for future diffuse photon searches: with the data from the next 10 years of operation of the Observatory, this limit is expected to improve by a factor of ∼20.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10303 - Particles and field physics
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Cosmology and Astroparticle Physics
ISSN
1475-7516
e-ISSN
1475-7516
Volume of the periodical
2025
Issue of the periodical within the volume
05
Country of publishing house
US - UNITED STATES
Number of pages
35
Pages from-to
61
UT code for WoS article
001498259500001
EID of the result in the Scopus database
2-s2.0-105006557821