Comparison of UHECR spectra from necklaces and vortons

Masperi, L. and Orsaria, M. (2001) Comparison of UHECR spectra from necklaces and vortons. Il nuovo cimento C, 24 C (4\5). pp. 713-718. ISSN 1826-9885

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Abstract

Cosmic rays of energy higher than 1019 eV may be explained by topological defects produced in the early universe. Two alternatives are necklaces and vortons. The former are uniformly distributed in the universe, may account for cosmic rays above the ankle and suffer a transient GZK cutoff with a subsequent recovery. The latter are concentrated in the galactic halo, require an additional extragalactic contribution between the ankle and the GZK cutoff, beyond which give a harder component.

Item Type:	Article
Additional Information:	aper presented at the Chacaltaya Meeting on Cosmic Ray Physics, La Paz, Bolivia, July 23-27, 2000.
Uncontrolled Keywords:	Unidentified sources of radiation outside the Solar System ; Cosmic rays (including sources, origin, acceleration, and interactions) ; Particle-theory and field-theory models of the early Universe (including cosmic pancakes, cosmic strings, chaotic phenomena, inflationary universe, etc.) ; Conference proceedings
Subjects:	500 Scienze naturali e Matematica > 550 Scienze della Terra > 551 Geologia, Idrologia, Meteorologia > 551.5 Meteorologia (Classificare qui l'atmosfera) (Classificare la previsione e le previsioni di specifici fenomeni meteorologici in 551.64; classificare la Micrometeorologia in 551.66) > 551.52 Termodinamica, interazioni atmosferiche con la superficie terrestre, temperature, radiazioni > 551.527 Radiazioni (per fenomeni ottici, vedi 551.565) > 551.5276 Radiazioni cosmiche (Include il rumore cosmico) (Classificare qui i raggi cosmici)
Depositing User:	Marina Spanti
Date Deposited:	11 Mar 2020 14:08
Last Modified:	11 Mar 2020 14:08
URI:	http://eprints.bice.rm.cnr.it/id/eprint/14712

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