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The TeV spectrum of H1426+428
D. Petry, I. H. Bond, S. M. Bradbury +45
The BL Lac object H1426+428 was recently detected as a high energy gamma-ray source by the VERITAS collaboration (Horan et al. 2002). We have reanalyzed the 2001 portion of the dat…
Discovery of Spectral Variability of Markarian 421 at TeV Energies
F. Krennrich, I. H. Bond, S. M. Bradbury +38
The detection of spectral variability of the gamma-ray blazar Mrk 421 at TeV energies is reported. Observations with the Whipple Observatory 10m gamma-ray telescope taken in 2000/2…
Extensive Air Shower Simulations at the Highest Energies
J. Knapp, D. Heck, S. J. Sciutto +2
Air shower simulation programs are essential tools for the analysis of data from cosmic ray experiments and for planning the layout of new detectors. They are used to estimate the…
Mass Composition of Cosmic Rays in the Range 2 x 10^17 - 3 x 10^18 Measured with Haverah Park Array
M. Ave, L. Cazon, J. A. Hinton +3
At the Haverah Park Array a number of air shower observables were measured that are relevant to the determination of the mass composition of cosmic rays. In this paper we discuss m…
The Composition of Cosmic Rays at the Knee
S. P. Swordy, L. F. Fortson, J. Hinton +21
The observation of a small change in spectral slope, or 'knee' in the fluxes of cosmic rays near energies 10^15 eV has caused much speculation since its discovery over 40 years ago…