Fitting the HiRes Spectra and Monocular Composition
Abstract
This paper consists of two sections. In the first section, we discuss our fits to the latest HiRes monocular spectra. We find that the best fit for the extragalactic component has a spectral index of γ=-2.380.04 with a distribution of sources varying with a evolution parameter m=2.80.3. In the second section, we discuss preliminary results from a new composition measurement using HiRes monocular data. We find a predominantly light spectrum above 1017.6 eV.
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