2000/01/31 by S. L. Dubovsky, P. G. Tinyakov, I. Tkachev +1 · 6 citations
Physics and Astronomy · #Astrophysics #Astrophysics and Cosmic Phenomena #COSMIC cancer database #Cluster analysis #Cosmic ray #Dark Matter and Cosmic Phenomena #Gamma-ray bursts and supernovae #Physics #Statistical analysis #Statistical physics #Statistics #astro-ph #hep-ph
paper · pdf · doi:10.1103/physrevlett.85.1154
published as Phys.Rev.Lett.85:1154-1157,2000 · The version accepted for publication in Phys. Rev. Lett. Notations changed to conventional ones. The estimate of the effective GZK radius replaced by the result of numerical simulation
arxiv created 2000/07/10 · openalex publication_date 2000/08/07 · arxiv updated 2010/12/03 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Observation of clustering of ultrahigh energy cosmic rays (UHECR) suggests that they are emitted by compact sources. Assuming small ( <3\ifmmode^∘\else\textdegree\fi) deflection of UHECR during the propagation, the statistical analysis of clustering allows an estimate of the spatial density of the sources h*, including those not yet observed. When applied to astrophysical models involving extragalactic sources, the estimate based on 14 events with energy E>1020eV gives h*\ensuremath∼6\ifmmode×\else\texttimes\fi10^\ensuremath-3Mpc^\ensuremath-3. With increasing statistics, this estimate may lead to exclusion of some models.