Results from recent analysis of KASCADE-Grande data

TL;DR

This paper presents recent analysis results from KASCADE-Grande data, focusing on cosmic ray energy spectrum, composition, and testing hadronic interaction models, with ongoing data analysis and updates to the data center.

Contribution

It provides new insights into the reliability of SIBYLL 2.3d and other models for high-energy air showers using KASCADE-Grande data.

Findings

Assessment of SIBYLL 2.3d model validity

Evolution of muon content in air showers

Updates to KASCADE Cosmic Ray Data Centre

Abstract

KASCADE and its extension array of KASCADE-Grande were devoted to measure individual air showers of cosmic rays in the primary energy range of 100 TeV to 1 EeV. The experiment has substantially contributed to investigate the energy spectrum and mass composition of cosmic rays in the transition region from galactic to extragalactic origin of cosmic rays as well as to quantify the characteristics of hadronic interaction models in the air shower development through validity tests using the multi-detector information from KASCADE-Grande. Although the data accumulation was completed in 2013, data analysis is still continuing. Recently, we investigated the reliability of the new hadronic interactions models of the SIBYLL version 2.3d only with the energy spectra from the KASCADE-Grande data. The evolution of the muon content of high energy air showers in the atmosphere is studied as well, using EPOS-LHC, SIBYLL 2.3, QGSJET-II-04 and SIBYLL 2.3c. In this talk, recent results from KASCADE-Grande and the update of the KASCADE Cosmic Ray Data Centre (KCDC) will be discussed.