Journal
PHYSICS LETTERS B
Volume 595, Issue -, Pages 50-54Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.physletb.2004.05.075
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We discuss the contribution of proton photoproduction interactions in the isotropic infrared/optical background to the cosmic neutrino fluxes. This contribution has a strong dependence on the proton injection energy spectrum, and is essential at high redshifts. It is thus closely correlated with the cosmological evolution of the ultra-high energy proton sources and of the infrared background itself. These interactions may also contribute to the source fluxes of neutrinos if the proton sources are located in regions of high infrared emission and magnetic fields. (C) 2004 Elsevier B.V. All rights reserved.
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