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A Likelihood Method for Measuring the Ultrahigh Energy Cosmic Ray Composition
HiRes Collaboration
Air fluorescence detectors traditionally determine the dominant chemical composit ion of the ultrahigh energy cosmic ray flux by comparing the averaged slant depth of the shower ma…
Observation of the Ankle and Evidence for a High-Energy Break in the Cosmic Ray Spectrum
s Eye Collaboration
We have measured the cosmic ray spectrum at energies above eV using the two air fluorescence detectors of the High Resolution Fly's Eye experiment operating in monocular…
A Study of the Composition of Ultra High Energy Cosmic Rays Using the High Resolution Fly's Eye
s Eye Collaboration
The composition of Ultra High Energy Cosmic Rays (UHECR) is measured with the High Resolution Fly's Eye cosmic ray observatory (HiRes) data using the Xmax technique. Data were coll…
Study of Small-Scale Anisotropy of Ultrahigh Energy Cosmic Rays Observed in Stereo by HiRes
s Eye Collaboration
The High Resolution Fly's Eye (HiRes) experiment is an air fluorescence detector which, operating in stereo mode, has a typical angular resolution of 0.6 degrees and is sensitive t…