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dc.contributor.author
Mollerach, Maria Silvia
dc.contributor.author
Roulet, Esteban
dc.date.available
2020-10-22T19:00:50Z
dc.date.issued
2019-05
dc.identifier.citation
Mollerach, Maria Silvia; Roulet, Esteban; Ultrahigh energy cosmic rays from a nearby extragalactic source in the diffusive regime; American Physical Society; Physical Review D; 99; 10; 5-2019; 1-18; 103010
dc.identifier.issn
2470-0010
dc.identifier.uri
http://hdl.handle.net/11336/116359
dc.description.abstract
We study the effects that the diffusion of cosmic rays in the magnetic field of the Local Supercluster can have on the spectrum of a nearby extragalactic source at ultrahigh energies. We find that the strong enhancement of the flux below the energy at which the transition between the diffusive and quasirectilinear regimes takes place, as well as the suppression at lower energies associated with a finite source age, can help to explain the observed features of the cosmic-ray spectrum and composition. Scenarios are discussed in which a nearby extragalactic source with mixed composition and a rigidity-dependent spectrum accounts for most of the observed cosmic rays at energies above a few EeV, while the rest of the extragalactic sources lead to a diffuse flux that dominates at lower energies and down to ∼0.1 EeV. The nearby source can also naturally account for the dipolar anisotropy measurements above 4 EeV, and these measurements can also help to constrain its evolution with redshift.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
American Physical Society
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by/2.5/ar/
dc.subject
RAYOS CÓSMICOS
dc.subject.classification
Astronomía
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Ciencias Físicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Ultrahigh energy cosmic rays from a nearby extragalactic source in the diffusive regime
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2020-10-07T13:58:08Z
dc.identifier.eissn
2470-0029
dc.journal.volume
99
dc.journal.number
10
dc.journal.pagination
1-18; 103010
dc.journal.pais
Estados Unidos
dc.journal.ciudad
Washington DC
dc.description.fil
Fil: Mollerach, Maria Silvia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina
dc.description.fil
Fil: Roulet, Esteban. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina
dc.journal.title
Physical Review D
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1103/PhysRevD.99.103010
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1103/PhysRevD.99.103010
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1903.05722
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