Astrophysical interpretation of the medium scale clustering in the ultra-high energy sky

Simple item page
dc.creatorCuoco, A.
dc.creatorMiele, G.
dc.creatorSerpico, P. D.
dc.date2007-06-19
dc.date2008-02-13
dc.date.accessioned2026-07-07T11:17:02Z
dc.date.available2026-07-07T11:17:02Z
dc.descriptionWe compare the clustering properties of the combined dataset of ultra-high energy cosmic rays events, reported by the AGASA, HiRes, Yakutsk and Sugar collaborations, with a catalogue of galaxies of the local universe (redshift z<~0.06). We find that the data reproduce particularly well the clustering properties of the nearby universe within z <~0.02. There is no statistically significant cross-correlation between data and structures, although intriguingly the nominal cross-correlation chance probability drops from ~50% to ~10% using the catalogue with a smaller horizon. Also, we discuss the impact on the robustness of the results of deflections in some galactic magnetic field models used in the literature. These results suggest a relevant role of magnetic fields (possibly extragalactic ones, too) and/or possibly some heavy nuclei fraction in the UHECRs. The importance of a confirmation of these hints by Auger data is emphasized.
dc.description10 pages, 7 figures; one reference added
dc.identifierhttps://arxiv.org/abs/0706.2864
dc.identifierhttp://arxiv.org/abs/0706.2864
dc.identifierPhys.Lett.B660:307-314,2008
dc.identifierdoi:10.1016/j.physletb.2007.12.054
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/192873
dc.subjectAstrophysics
dc.subjectHigh Energy Physics - Phenomenology
dc.titleAstrophysical interpretation of the medium scale clustering in the ultra-high energy sky
dc.typetext

Files

Collections

arXiv