26 research outputs found
Upper limits on the isotropic diffuse flux of cosmic PeV photons from Carpet-2 observations
Full text linkIsotropic diffuse gamma-ray flux in the PeV energy band is an important tool
for multimessenger tests of models of the origin of high-energy astrophysical
neutrinos and for new-physics searches. So far, this flux has not yet been
observed. Carpet-2 is an air-shower experiment capable of detecting
astrophysical gamma rays with energies above 0.1 PeV. Here we report the upper
limits on the isotropic gamma-ray flux from Carpet-2 data obtained in 1999-2011
and 2018-2022. These results, obtained with the new statistical method based on
the shape of the muon-number distribution, summarize Carpet-2 observations as
the upgraded installation, Carpet-3, starts its operation.Comment: 5 pages, 3 figures, JETPL.cls; V2: references added, version accepted
by JETP Letter
Hardware and Software for the Data AŃquisition Systems of the Andyrchi and Carpet-3 Air Shower Facilities
No full textThe Carpet-3 multipurpose shower array for searching cosmic diffuse gamma rays with energy E Îł
No full textStudying the muon and hadron components of extensive air showers with the Carpet-2 array
No full text
