Pierre Auger Data, Photons, and Top-Down Cosmic Ray Models

Simple item page
dc.creatorBusca, Nicolas
dc.creatorHooper, Dan
dc.creatorKolb, Edward W.
dc.date2006-03-02
dc.date.accessioned2026-07-07T11:25:19Z
dc.date.available2026-07-07T11:25:19Z
dc.descriptionWe consider the ultra-high energy cosmic ray (UHECR) spectrum as measured by the Pierre Auger Observatory. Top-down models for the origin of UHECRs predict an increasing photon component at energies above about $10^{19.7}$eV. Here we present a simple prescription to compare the Auger data with a prediction assuming a pure proton component or a prediction assuming a changing primary component appropriate for a top-down model. We find that the UHECR spectrum predicted in top-down models is a good fit to the Auger data. Eventually, Auger will measure a composition-independent spectrum and will be capable of either confirming or excluding the quantity of photons predicted in top-down models.
dc.description8 pages, 3 figures
dc.identifierhttps://arxiv.org/abs/astro-ph/0603055
dc.identifierhttp://arxiv.org/abs/astro-ph/0603055
dc.identifierPhys.Rev.D73:123001,2006
dc.identifierdoi:10.1103/PhysRevD.73.123001
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/195470
dc.subjectAstrophysics
dc.subjectHigh Energy Physics - Phenomenology
dc.titlePierre Auger Data, Photons, and Top-Down Cosmic Ray Models
dc.typetext

Files

Collections

arXiv