2004/09/15 by Benjamin T. Stokes
Physics and Astronomy · #Angular resolution (graph drawing) #Anisotropy #Astrophysics and Cosmic Phenomena #Cosmic ray #Dark Matter and Cosmic Phenomena #Detector #Energy (signal processing) #Gamma-ray bursts and supernovae #Isotropy #Mode (computer interface) #Monocular #astro-ph
paper · pdf · doi:10.1016/j.nuclphysbps.2004.10.002
published as Nucl. Phys. B (Proceedings Suppl.) 136C (2004) 52-57 · 6 pages, 5 figures; to appear in the proceedings of CRIS 2004, Catania, Italy, 31 May - 4 June 2004 (Nuclear Phys. B)
arxiv created 2004/09/15 · openalex publication_date 2004/11/01 · arxiv updated 2019/08/15 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The High Resolution Fly's Eye HiRes-I detector has now been in operation in monocular mode for over six years. During that time span, HiRes-I has accumulated a larger exposure to Ultra-High Energy Cosmic Rays (UHECRs) above 1019 eV than any other experiment built to date. This presents an unprecedented opportunity to search for anisotropy in the arrival directions of UHECRs. We present results of a search for dipole distributions oriented towards major astrophysical landmarks and a search for small-scale clustering. We conclude that the HiRes-I data set is, in fact, consistent with an isotropic source model.