145 citations · 372 across the 14 of their papers we have counts for
14 papers
Carpet-3 detection of a photon-like air shower with estimated primary energy above 100 TeV in a spatial and temporal coincidence with GRB 221009A
D. D. Dzhappuev, I. M. Dzaparova, T. A. Dzhatdoev +18
The brightest cosmic gamma-ray burst (GRB) ever detected, GRB 221009A, was accompanied by photons of very high energies. These gamma rays may be used to test both the astrophysical…
Muon lateral distribution function of extensive air showers: results of the Sydney University Giant Air-shower Recorder versus modern Monte-Carlo simulations
N. N. Kalmykov, I. S. Karpikov, G. I. Rubtsov +1
The Sydney University Giant Air-shower Recorder (SUGAR) measured the muon component of extensive air showers with a unique array of muon detectors. The SUGAR data allow us to recon…
Observation of photons above 300 TeV associated with a high-energy neutrino from the Cygnus region
D. D. Dzhappuev, Yu. Z. Afashokov, I. M. Dzaparova +19
Galactic sites of acceleration of cosmic rays to energies of order 10^15 eV and higher, dubbed PeVatrons, reveal themselves by recently discovered gamma radiation of energies above…
Carpet-2 search for gamma rays above 100 TeV in coincidence with HAWC and IceCube alerts
D. D. Dzhappuev, Yu. Z. Afashokov, I. M. Dzaparova +16
We report on the search of astrophysical gamma rays with energies in the 100 TeV to several PeV range arriving in directional and temporal coincidence with public alerts from HAWC…
Carpet results on astrophysical gamma rays above 100 TeV
D. D. Dzhappuev, I. M. Dzaparova, E. A. Gorbacheva +14
Carpet is an air-shower array at Baksan, Russia, equipped with a large-area muon detector, which makes it possible to separate primary photons from hadrons. We report first results…
Report on Tests and Measurements of Hadronic Interaction Properties with Air Showers
H. P. Dembinski, J. C. Arteaga-Velázquez, L. Cazon +18
We present a summary of recent tests and measurements of hadronic interaction properties with air showers. This report has a special focus on muon density measurements. Several exp…
Search for astrophysical PeV gamma rays from point sources with Carpet-2
D. D. Dzhappuev, I. M. Dzaparova, E. A. Gorbacheva +14
Early results of the search for E_γ>1 PeV cosmic photons from point sources with the data of Carpet-2, an air-shower array equipped with a 175 m^2 muon detector, are presented. The…
Carpet-2 search for PeV gamma rays associated with IceCube high-energy neutrino events
D. D. Dzhappuev, I. M. Dzaparova, E. A. Gorbacheva +14
Carpet-2 is an air-shower array at Baksan Valley, Russia, equipped with a large-area (175 m^2) muon detector, which makes it possible to separate primary photons from hadrons. We r…
Lower limit on the ultra-high-energy proton-to-helium ratio from the measurements of the tail of distribution
Ivan S. Karpikov, Grigory I. Rubtsov, Yana V. Zhezher
There are multiple techniques to determine the chemical composition of the ultra-high-energy cosmic rays. While most of the methods are primarily sensitive to the average atomic ma…
Muon content of extensive air showers: comparison of the energy spectra obtained by the Sydney University Giant Air-shower Recorder and by the Pierre Auger Observatory
J. A. Bellido, R. W. Clay, N. N. Kalmykov +4
The Sydney University Giant Air-shower Recorder (SUGAR) measured the energy spectrum of ultra-high-energy cosmic rays reconstructed from muon-detector readings, while the Pierre Au…
Constraints on the flux of eV cosmic photons from the EAS-MSU muon data
Yu. A. Fomin, N. N. Kalmykov, I. S. Karpikov +5
Results of the search for eV primary cosmic-ray photons with the data of the Moscow State University (MSU) Extensive Air Shower (EAS) array are reporte…
No muon excess in extensive air showers at 100-500 PeV primary energy: EAS-MSU results
Yu. A. Fomin, N. N. Kalmykov, I. S. Karpikov +5
Some discrepancies have been reported between observed and simulated muon content of extensive air showers: the number of observed muons exceeded the expectations in HiRes-MIA, Yak…
Full Monte-Carlo description of the Moscow State University Extensive Air Shower experiment
Yu. A. Fomin, N. N. Kalmykov, I. S. Karpikov +5
The Moscow State University Extensive Air Shower (EAS-MSU) array studied high-energy cosmic rays with primary energies ~(1-500) PeV in the Northern hemisphere. The EAS-MSU data are…
Constraining spacetime variations of nuclear decay rates from light curves of type Ia supernovae
Ivan Karpikov, Maxim Piskunov, Anton Sokolov +1
The luminosity of fading type Ia supernovae is governed by radioactive decays of 56Ni and 56Co. The decay rates are proportional to the Fermi coupling constant G_F and, therefore,…