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arXiv:astro-ph/9605036 (astro-ph)
[Submitted on 8 May 1996 (v1), last revised 26 Mar 1997 (this version, v2)]

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

Authors:R.J. Protheroe (University of Adelaide), Todor Stanev (Bartol Research Institute)
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Abstract: Using the propagation of ultra high energy nucleons, photons and electrons in the universal radiation backgrounds, we obtain limits on the luminosity of topological defects scenarios for the origin of the highest energy cosmic rays. The limits are set as function of the mass of the 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 100 MeV gamma-ray background limit significantly the parameter space in which topological defects can generate the flux of the highest energy cosmic rays.
Comments: 8 pages, latex, 4 postscript figures, uses this http URL. Axis labelling on Figs. 2, 3, and 4 corrected. Discussion and conclusions unchanged
Subjects: Astrophysics (astro-ph)
Report number: ADP-AT-96-6 (Revised)
Cite as: arXiv:astro-ph/9605036
  (or arXiv:astro-ph/9605036v2 for this version)
  https://doi.org/10.48550/arXiv.astro-ph/9605036
Journal reference: Phys.Rev.Lett.77:3708-3711,1996; Erratum-ibid.78:3420,1997
Related DOI: https://doi.org/10.1103/PhysRevLett.77.3708

Submission history

From: Dr. Ray Protheroe [view email]
[v1] Wed, 8 May 1996 16:35:11 UTC (24 KB)
[v2] Wed, 26 Mar 1997 07:26:25 UTC (25 KB)
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