Monocular UHECR Spectra as Measured by HiRes

TL;DR

This paper presents measurements of ultra-high-energy cosmic ray spectra using the HiRes experiment's monocular mode, comparing results with astrophysical models and the AGASA experiment to understand cosmic ray origins.

Contribution

It provides the first detailed spectra from HiRes in monocular mode and compares these with models and other experimental results.

Findings

Measured UHECR spectra with HiRes monocular detectors

Compared spectra with astrophysical source models

Contrasted results with AGASA experiment data

Abstract

We have measured the spectrum of UHE cosmic rays in monocular mode using separately both detectors the High Resolution Fly's Eye experiment. We describe the two detectors and the basic methods of analysis, and we present our measured spectra. We compare these spectra with that produced by an astrophysical source model with galactic and uniformly distributed extra-galactic sources. We also compare our spectra to the spectra produced by the AGASA experiment.