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astro-ph2007★ 16 cited
Constraints on the steady and pulsed very high energy gamma-ray emission from observations of PSR B1951+32/CTB 80 with the MAGIC Telescope
MAGIC Collaboration, J. Albert
We report on very high energy gamma-observations with the MAGIC Telescope of the pulsar PSR B1951+32 and its associated nebula, CTB 80. Our data constrain the cutoff energy of the…
astro-ph2004★ 2 cited
At what particle energy do extragalactic cosmic rays start to predominate?
Tadeusz Wibig, Arnold W. Wolfendale
We have argued [J. Szabelski et al. (2002)] that the well-known `ankle' in the cosmic ray energy spectrum, at logE (eV) ~ 18.7-19.0, marks the transition from mainly Galactic sourc…
astro-ph2004★ 2 cited
No 'cut off' in the High Energy Cosmic Ray Energy Spectrum
Tadeusz Wibig, Arnold W. Wolfendale
It is often claimed that there should be a 'GZK cut-off" in the flux of extragalactic cosmic rays, arising from interactions between the cosmic rays and the cosmic micro-wave backg…