Heavy nuclei at the end of the cosmic ray spectrum

Autores
Anchordoqui, Luis Alfredo; Romero, Gustavo Esteban; Combi, Jorge Ariel
Año de publicación
1999
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We provide an account of the possible acceleration of iron nuclei up to energies 300 EeV in the nearby, metally rich starburst galaxy NGC 253. It is suggested that particles can escape from the nuclear region with energies of ~1015 eV and can then be reaccelerated at the terminal shock of the galactic superwind generated by the starburst, avoiding the photodisintegration expected if the nuclei were accelerated in the central region of high photon density. We have also made estimates of the expected arrival spectrum, which displays a strong dependence on the energy cutoff at the source.
Facultad de Ciencias Astronómicas y Geofísicas
Instituto Argentino de Radioastronomía
Materia
Ciencias Astronómicas
Cosmic ray
Physics
Spectrum (functional analysis)
Energy (signal processing)
Photodisintegration
Photon density
Central region
Astrophysics
Galaxy
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/122767
Acceder
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oai_identifier_str oai:sedici.unlp.edu.ar:10915/122767
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Heavy nuclei at the end of the cosmic ray spectrumAnchordoqui, Luis AlfredoRomero, Gustavo EstebanCombi, Jorge ArielCiencias AstronómicasCosmic rayPhysicsSpectrum (functional analysis)Energy (signal processing)PhotodisintegrationPhoton densityCentral regionAstrophysicsGalaxyWe provide an account of the possible acceleration of iron nuclei up to energies 300 EeV in the nearby, metally rich starburst galaxy NGC 253. It is suggested that particles can escape from the nuclear region with energies of ~10<sup>15</sup> eV and can then be reaccelerated at the terminal shock of the galactic superwind generated by the starburst, avoiding the photodisintegration expected if the nuclei were accelerated in the central region of high photon density. We have also made estimates of the expected arrival spectrum, which displays a strong dependence on the energy cutoff at the source.Facultad de Ciencias Astronómicas y GeofísicasInstituto Argentino de Radioastronomía1999-10-25info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/122767enginfo:eu-repo/semantics/altIdentifier/issn/0556-2821info:eu-repo/semantics/altIdentifier/issn/1089-4918info:eu-repo/semantics/altIdentifier/arxiv/astro-ph/9903145info:eu-repo/semantics/altIdentifier/doi/10.1103/physrevd.60.103001info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:29:14Zoai:sedici.unlp.edu.ar:10915/122767Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:29:15.008SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Heavy nuclei at the end of the cosmic ray spectrum
title Heavy nuclei at the end of the cosmic ray spectrum
spellingShingle Heavy nuclei at the end of the cosmic ray spectrum
Anchordoqui, Luis Alfredo
Ciencias Astronómicas
Cosmic ray
Physics
Spectrum (functional analysis)
Energy (signal processing)
Photodisintegration
Photon density
Central region
Astrophysics
Galaxy
title_short Heavy nuclei at the end of the cosmic ray spectrum
title_full Heavy nuclei at the end of the cosmic ray spectrum
title_fullStr Heavy nuclei at the end of the cosmic ray spectrum
title_full_unstemmed Heavy nuclei at the end of the cosmic ray spectrum
title_sort Heavy nuclei at the end of the cosmic ray spectrum
dc.creator.none.fl_str_mv Anchordoqui, Luis Alfredo
Romero, Gustavo Esteban
Combi, Jorge Ariel
author Anchordoqui, Luis Alfredo
author_facet Anchordoqui, Luis Alfredo
Romero, Gustavo Esteban
Combi, Jorge Ariel
author_role author
author2 Romero, Gustavo Esteban
Combi, Jorge Ariel
author2_role author
author
dc.subject.none.fl_str_mv Ciencias Astronómicas
Cosmic ray
Physics
Spectrum (functional analysis)
Energy (signal processing)
Photodisintegration
Photon density
Central region
Astrophysics
Galaxy
topic Ciencias Astronómicas
Cosmic ray
Physics
Spectrum (functional analysis)
Energy (signal processing)
Photodisintegration
Photon density
Central region
Astrophysics
Galaxy
dc.description.none.fl_txt_mv We provide an account of the possible acceleration of iron nuclei up to energies 300 EeV in the nearby, metally rich starburst galaxy NGC 253. It is suggested that particles can escape from the nuclear region with energies of ~10<sup>15</sup> eV and can then be reaccelerated at the terminal shock of the galactic superwind generated by the starburst, avoiding the photodisintegration expected if the nuclei were accelerated in the central region of high photon density. We have also made estimates of the expected arrival spectrum, which displays a strong dependence on the energy cutoff at the source.
Facultad de Ciencias Astronómicas y Geofísicas
Instituto Argentino de Radioastronomía
description We provide an account of the possible acceleration of iron nuclei up to energies 300 EeV in the nearby, metally rich starburst galaxy NGC 253. It is suggested that particles can escape from the nuclear region with energies of ~10<sup>15</sup> eV and can then be reaccelerated at the terminal shock of the galactic superwind generated by the starburst, avoiding the photodisintegration expected if the nuclei were accelerated in the central region of high photon density. We have also made estimates of the expected arrival spectrum, which displays a strong dependence on the energy cutoff at the source.
publishDate 1999
dc.date.none.fl_str_mv 1999-10-25
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/122767
url http://sedici.unlp.edu.ar/handle/10915/122767
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0556-2821
info:eu-repo/semantics/altIdentifier/issn/1089-4918
info:eu-repo/semantics/altIdentifier/arxiv/astro-ph/9903145
info:eu-repo/semantics/altIdentifier/doi/10.1103/physrevd.60.103001
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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score 13.070432

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