Observation of the GZK Cutoff Using the HiRes Detector

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dc.creatorBergman, D. R.
dc.date2006-09-15
dc.date.accessioned2026-07-07T10:23:37Z
dc.date.available2026-07-07T10:23:37Z
dc.descriptionThe High Resolution Fly's Eye (HiRes) experiment has observed the GZK cutoff. HiRes observes two features in the ultra-high energy cosmic ray (UHECR) flux spectrum: the Ankle at an energy of $4\times10^{18}$ eV and a high energy suppression at $6\times10^{19}$ eV. The later feature is at exactly the right energy for the GZK cutoff according to the $E_{1/2}$ criterion. HiRes cannot claim to observe a third feature at lower energies, the Second Knee. The HiRes monocular spectra are presented, along with data demonstrating our control and understanding of systematic uncertainties affecting the energy and flux measurements.
dc.description8 pages, 12 figures. Proceedings submission for CRIS 2006, Catania, May/June 2006
dc.identifierhttps://arxiv.org/abs/astro-ph/0609453
dc.identifierhttp://arxiv.org/abs/astro-ph/0609453
dc.identifierNucl.Phys.Proc.Suppl.165:19-26,2007
dc.identifierdoi:10.1016/j.nuclphysbps.2006.11.004
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/175895
dc.subjectAstrophysics
dc.titleObservation of the GZK Cutoff Using the HiRes Detector
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