Extension of Cherenkov Light LDF Approximation for Yakutsk EAS Array

Callibration of a homemade 4-fold Water Cherenkov Detector array, by detection of EAS events

Measuring extensive air showers with Cherenkov light detectors of the Yakutsk array: The energy spectrum of cosmic rays

The energy spectrum of cosmic rays in the range E ∼ 1015 eV to 6 × 1019 eV has been studied using the air Cherenkov light detectors of the Yakutsk array. The total flux of photons produced by relativistic electrons (including positrons as well, hereafter) of extensive air showers in the atmosphere is used as the energy estimator of the primary particle initiating a shower. The resultant differe...

callibration of a homemade 4-fold water cherenkov detector array, by detection of eas events

Clusters in the Arrival Directions of 2 × 1017-eV Cosmic Rays Detected at the Yakutsk EAS Array

1. Primary cosmic radiation (PCR) of ultrahigh energies (E0 > 4 × 1017 eV) is thought to consist primarily of charged particles, protons, and nuclei of various chemical elements. These charged particles are strongly mixed by the magnetic field of the galaxy and distributed almost isotropically over the celestial sphere. For this reason, it is difficult to find the local sources of PCR. The abov...

Exploring arrival directions of UHECRs with the Yakutsk array

The data on arrival directions of ultra-high energy cosmic rays (UHECRs) detected with the Yakutsk array are analyzed. The work is induced by the recent claim of the Pierre Auger collaboration for the significant correlation found between UHECRs and positions of nearby Active Galactic Nuclei (AGN) on the celestial sphere; and no correlation the HiRes collaboration stands for. Conflicting data o...