arXiv subjects

KASCADE-Grande Collaboration

Publications and source records attributed to KASCADE-Grande Collaboration.

3 recordsLinked to original sources

arXiv2009

The Cosmic Ray Energy Spectrum Measured with KASCADE-Grande

KASCADE-Grande is a multi-detector experiment at Forschungszentrum Karlsruhe, Germany for measuring extensive air showers in the primary energy range of 100 TeV to 1 EeV. This contribution attempts to provide a synopsis of the current results of the experiment. In particular, the reconstruction of the all-particle energy spectrum in the range of 10 PeV to 1 EeV based on four different methods with partly different sources of systematic uncertainties is presented. Since the calibration of the observables in terms of the primary energy and mass depends on Monte Carlo simulations, we compare the results of various methods applied to the same sample of measured data. In addition, first investigations on the elemental composition of the cosmic particles as well as on tests of hadronic interaction models underlying the analyses are discussed.

astro-ph.HE↗

arXiv2006

Recent Results from Kascade-Grande

KASCADE-Grande is a new extensive air shower experiment co-located to the KASCADE site at Forschungszentrum Karlsruhe. The multi-detector system allows to investigate the energy spectrum, composition, and anisotropies of cosmic rays with unprecedented prevision in the energy range from 10^{14}-10^{18} eV. The primary goals besides investigating the origin of the knee at E ~ 3 * 10^{15} eV, are to verify the existence of the second knee at E ~ 10^{17} eV and to measure the composition in the expected transition region of galactic to extragalactic cosmic rays. The performance of the apparatus and shower reconstruction methods will be discussed on the basis of detailed Monte Carlo simulations and first data. First results based on slightly more than a year of data taking are presented.

astro-ph↗

arXiv2004

Cosmic Rays in the 'Knee'-Region - Recent Results from KASCADE -

Recent results from the KASCADE experiment on measurements of cosmic rays in the energy range of the knee are presented. Emphasis is placed on energy spectra of individual mass groups as obtained from sophisticated unfolding procedures applied to the reconstructed electron and truncated muon numbers of EAS. The data show a knee-like structure in the energy spectra of light primaries (p, He, C) and an increasing dominance of heavy ones (A>20) towards higher energies. This basic result is robust against uncertainties of the applied interaction models QGSJET and SIBYLL. Slight differences observed between experimental data and EAS simulations provide important clues for improvements of the interaction models. The data are complemented by new limits on global anisotropies in the arrival directions of CRs and by upper limits on point sources. Astrophysical implications for discriminating models of maximum acceleration energy vs galactic diffusion/drift models of the knee are discussed based on this data. To improve the reconstruction quality and statistics around 10^17 eV, KASCADE has recently been extended by a factor 10 in area. The status and expected performance of the new experiment KASCADE-Grande is presented.

astro-ph↗