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Title: Limits on Models of the Ultrahigh Energy Cosmic Rays Based on Topological Defects

Abstract

Using the propagation of ultrahigh energy nucleons, photons, and electrons in the universal radiation backgrounds, we obtain limits on the luminosity of topological defect scenarios for the origin of the highest energy cosmic rays. The limits are set as function of the mass of the {ital X} particles emitted by the cosmic strings or other defects, the cosmological evolution of the topological defects, and the strength of the extragalactic magnetic fields. The existing data on the cosmic ray spectrum and on the isotropic 100MeV gamma-ray background limit significantly the parameter space in which topological defects can generate the flux of the highest energy cosmic rays, and rule out models with the standard {ital X}-particle mass of 10{sup 16}GeV and higher. {copyright} {ital 1996 The American Physical Society.}

Authors:
;  [1]
  1. Department of Physics and Mathematical Physics, University of Adelaide, Adelaide, SA 5000 (Australia)
Publication Date:
OSTI Identifier:
389355
DOE Contract Number:  
FG02-91ER40626
Resource Type:
Journal Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 77; Journal Issue: 18; Other Information: PBD: Oct 1996
Country of Publication:
United States
Language:
English
Subject:
66 PHYSICS; COSMIC RAY FLUX; TOPOLOGY; DEFECTS; NUCLEONS; ELECTRONS; PHOTONS; LUMINOSITY; BACKGROUND RADIATION; MAGNETIC FIELDS; ENERGY SPECTRA; GAMMA RADIATION

Citation Formats

Protheroe, R J, Stanev, T, and Bartol Research Institute, University of Delaware, Newark, Delaware 19716. Limits on Models of the Ultrahigh Energy Cosmic Rays Based on Topological Defects. United States: N. p., 1996. Web. doi:10.1103/PhysRevLett.77.3708.
Protheroe, R J, Stanev, T, & Bartol Research Institute, University of Delaware, Newark, Delaware 19716. Limits on Models of the Ultrahigh Energy Cosmic Rays Based on Topological Defects. United States. https://doi.org/10.1103/PhysRevLett.77.3708
Protheroe, R J, Stanev, T, and Bartol Research Institute, University of Delaware, Newark, Delaware 19716. Tue . "Limits on Models of the Ultrahigh Energy Cosmic Rays Based on Topological Defects". United States. https://doi.org/10.1103/PhysRevLett.77.3708.
@article{osti_389355,
title = {Limits on Models of the Ultrahigh Energy Cosmic Rays Based on Topological Defects},
author = {Protheroe, R J and Stanev, T and Bartol Research Institute, University of Delaware, Newark, Delaware 19716},
abstractNote = {Using the propagation of ultrahigh energy nucleons, photons, and electrons in the universal radiation backgrounds, we obtain limits on the luminosity of topological defect scenarios for the origin of the highest energy cosmic rays. The limits are set as function of the mass of the {ital X} particles emitted by the cosmic strings or other defects, the cosmological evolution of the topological defects, and the strength of the extragalactic magnetic fields. The existing data on the cosmic ray spectrum and on the isotropic 100MeV gamma-ray background limit significantly the parameter space in which topological defects can generate the flux of the highest energy cosmic rays, and rule out models with the standard {ital X}-particle mass of 10{sup 16}GeV and higher. {copyright} {ital 1996 The American Physical Society.}},
doi = {10.1103/PhysRevLett.77.3708},
url = {https://www.osti.gov/biblio/389355}, journal = {Physical Review Letters},
number = 18,
volume = 77,
place = {United States},
year = {1996},
month = {10}
}