12-20 July 2017
Asia/Seoul timezone
Home > Timetable > Session details > Contribution details


BEXCO - Room F(201/202/203/204)

[CRI015] Energy spectrum of ultra-high energy cosmic rays according to surface detectors of Yakutsk EAS array


  • Artem SABOUROV

Primary authors



We present the results of the analysis of cosmic rays spectrum in energy domain above 10^17 eV. The analysis covers extensive air showers registered over the course of continuous observations from 1974 to 2017. A new refined relation was applied to reconstruct primary energy in individual events. It was derived from the lateral distribution of responses of surface and underground detectors of the Yakutsk EAS array obtained in air shower simulations with four hadron interaction models - QGSJet01d, QGSJet-II-04, SIBYLL-2.1 and EPOS-LHC. The resulting new energy estimation is 1.4 times lower than the values obtained earlier with calorimetric method.