Monocular measurement of the spectrum of UHE cosmic rays by the FADC detector of the HiRes experiment

2002/08/31 by s Eye Collaboration, R.U. Abbasi, T. Abu‐Zayyad +60 · 124 citations
Physics and Astronomy · #Astrophysics #Astrophysics and Cosmic Phenomena #COSMIC cancer database #Cosmic ray #Dark Matter and Cosmic Phenomena #Detector #Neutrino Physics Research #Nuclear physics #Optics #Physics #Telescope #astro-ph #hep-ex

paper · pdf · doi:10.1016/j.astropartphys.2004.12.006

published in Astroparticle Physics 23(2), 157-174 (Elsevier BV) · 25 pages, 16 figures. Accepted by Astroparticle Physics, accepted version

arxiv created 2004/12/03 · openalex publication_date 2005/01/06 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We have measured the spectrum of UHE cosmic rays using the Flash ADC (FADC) detector (called HiRes-II) of the High Resolution Fly's Eye experiment running in monocular mode. We describe in detail the data analysis, development of the Monte Carlo simulation program, and results. We also describe the results of the HiRes-I detector. We present our measured spectra and compare them with a model incorporating galactic and extragalactic cosmic rays. Our combined spectra provide strong evidence for the existence of the spectral feature known as the ``ankle.''

Citations

• Evidence for a Primary Cosmic-Ray Particle with Energy1020eV
• Energy determination in the Akeno Giant Air Shower Array experiment
• Measurement of the Flux of Ultrahigh Energy Cosmic Rays from Monocular Observations by the High Resolution Fly’s Eye Experiment

Cited by

• A closer look at the spectrum and small scale anisotropies of ultrahigh energy cosmic rays
• Astronomy with Ultra High‐Energy Particles
• The footprint of large scale cosmic structure on the ultrahigh energy cosmic ray distribution