Enhanced Cosmological GRB Rates and Implications for Cosmogenic Neutrinos

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dc.creatorYuksel, Hasan
dc.creatorKistler, Matthew D.
dc.date2006-10-16
dc.date2007-04-11
dc.date.accessioned2026-07-07T11:26:11Z
dc.date.available2026-07-07T11:26:11Z
dc.descriptionGamma-ray bursts, which are among the most violent events in the universe, are one of the few viable candidates to produce ultrahigh energy cosmic rays. Recently, observations have revealed that GRBs generally originate from metal-poor galaxies and do not directly trace cosmic star formation, as might have been assumed from their association with core-collapse supernovae. Several implications follow from these findings. The redshift distribution of observed GRBs is expected to peak at higher redshift (compared to cosmic star formation), which is supported by the mean redshift of the Swift GRB sample, <z>~3. If GRBs are, in fact, the source of the observed UHECR, then cosmic-ray production would evolve with redshift in a stronger fashion than has been previously suggested. This necessarily leads, through the GZK process, to an enhancement in the flux of cosmogenic neutrinos, providing a near-term approach for testing the gamma-ray burst-cosmic ray connection with ongoing and proposed UHE neutrino experiments.
dc.description9 pages, 5 figures, references and two appendices added, conclusions unchanged; accepted for publication in Phys.Rev.D
dc.identifierhttps://arxiv.org/abs/astro-ph/0610481
dc.identifierhttp://arxiv.org/abs/astro-ph/0610481
dc.identifierPhys.Rev.D75:083004,2007
dc.identifierdoi:10.1103/PhysRevD.75.083004
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/195743
dc.subjectAstrophysics
dc.subjectHigh Energy Physics - Phenomenology
dc.titleEnhanced Cosmological GRB Rates and Implications for Cosmogenic Neutrinos
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