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dc.contributor.author
Harari, Diego Dario
dc.date.available
2018-01-05T19:50:51Z
dc.date.issued
2014-03
dc.identifier.citation
Harari, Diego Dario; The flux suppression at the highest energies; Elsevier Masson; Comptes Rendus Physique; 15; 4; 3-2014; 376-383
dc.identifier.issn
1631-0705
dc.identifier.uri
http://hdl.handle.net/11336/32442
dc.description.abstract
Almost half a century ago, Greisen, Zatsepin and Kuz’min (GZK) predicted a “cosmologically meaningful termination” of the spectrum of cosmic rays at energies around 1020 eV due to their interaction with the cosmic microwave background, as they propagate from distant extragalactic sources. A suppression of the flux above 4×1019 eV is now confirmed. We argue that current data are insufficient to conclude whether the observed feature is due to energy-loss during propagation, or else because the astrophysical accelerators reach their limit, or indeed to a combination of both source properties and propagation effects. We discuss the dependence of the spectral steepening upon the cosmic-ray composition, source properties, and intervening magnetic fields, and speculate on the additional information that may be necessary to reach unambiguous conclusions about the origin of the flux suppression and of the mechanisms behind the acceleration of cosmic rays up to the highest observed energies.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Masson
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Cosmic Rays
dc.subject
Ultra High Energy
dc.subject
Gzk
dc.subject.classification
Astronomía
dc.subject.classification
Ciencias Físicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
The flux suppression at the highest energies
dc.title
La suppression du flux aux plus hautes énergies
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-12-14T20:14:58Z
dc.journal.volume
15
dc.journal.number
4
dc.journal.pagination
376-383
dc.journal.pais
Francia
dc.journal.ciudad
Paris
dc.description.fil
Fil: Harari, Diego Dario. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.journal.title
Comptes Rendus Physique
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.crhy.2014.02.011
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S1631070514000309
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