The spectrum of high-energy cosmic rays measured with KASCADE-Grande

Abstract

The energy spectrum of cosmic rays between 10**16 eV and 10**18 eV, derived from measurements of the shower size (total number of charged particles) and the total muon number of extensive air showers by the KASCADE-Grande experiment, is described. The resulting all-particle energy spectrum exhibits strong hints for a hardening of the spectrum at approximately 2x10**16 eV and a significant steepening at c. 8x10**16 eV. These observations challenge the view that the spectrum is a single power law between knee and ankle. Possible scenarios generating such features are discussed in terms of astrophysical processes that may explain the transition region from galactic to extragalactic origin of cosmic rays.

arXiv commentaccepted by Astroparticle Physics June 2012

References in corpus (14)

• Correlation of the highest energy cosmic rays with nearby extragalactic objects
• First Observation of the Greisen-Zatsepin-Kuzmin Suppression
• KASCADE measurements of energy spectra for elemental groups of cosmic rays: Results and open problems
• QGSJET-II: towards reliable description of very high energy hadronic interactions
• Parton Ladder Splitting and the Rapidity Dependence of Transverse Momentum Spectra in Deuteron-Gold Collisions at RHIC
• Discrepant hardening observed in cosmic-ray elemental spectra
• Kneelike structure in the spectrum of the heavy component of cosmic rays observed with KASCADE-Grande
• Constraints from the first LHC data on hadronic event generators for ultra-high energy cosmic-ray physics
• Spectrum of Galactic Cosmic Rays Accelerated in Supernova Remnants
• All-particle primary energy spectrum in the 3-200 PeV energy range
• Comparison of measured and simulated lateral distributions for electrons and muons with KASCADE
• Cosmic Rays: The Second Knee and Beyond
• Experimental constraints on the astrophysical interpretation of the cosmic ray Galactic-extragalactic transition region
• The Origin of Cosmic Rays

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