Heavy nuclei at the end of the cosmic ray spectrum

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 termi...

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Detalles Bibliográficos
Autores principales: Anchordoqui, Luis Alfredo, Romero, Gustavo Esteban, Combi, Jorge Ariel
Formato: Articulo
Lenguaje:Inglés
Publicado: 1999
Materias:
Ciencias Astronómicas
Cosmic ray
Physics
Spectrum (functional analysis)
Energy (signal processing)
Photodisintegration
Photon density
Central region
Astrophysics
Galaxy
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/122767
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-122767
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Astronómicas
Cosmic ray
Physics
Spectrum (functional analysis)
Energy (signal processing)
Photodisintegration
Photon density
Central region
Astrophysics
Galaxy
spellingShingle Ciencias Astronómicas
Cosmic ray
Physics
Spectrum (functional analysis)
Energy (signal processing)
Photodisintegration
Photon density
Central region
Astrophysics
Galaxy
Anchordoqui, Luis Alfredo
Romero, Gustavo Esteban
Combi, Jorge Ariel
Heavy nuclei at the end of the cosmic ray spectrum
topic_facet Ciencias Astronómicas
Cosmic ray
Physics
Spectrum (functional analysis)
Energy (signal processing)
Photodisintegration
Photon density
Central region
Astrophysics
Galaxy
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.
format Articulo
Articulo
author Anchordoqui, Luis Alfredo
Romero, Gustavo Esteban
Combi, Jorge Ariel
author_facet Anchordoqui, Luis Alfredo
Romero, Gustavo Esteban
Combi, Jorge Ariel
author_sort Anchordoqui, Luis Alfredo
title Heavy nuclei at the end of the cosmic ray spectrum
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
publishDate 1999
url http://sedici.unlp.edu.ar/handle/10915/122767
work_keys_str_mv AT anchordoquiluisalfredo heavynucleiattheendofthecosmicrayspectrum
AT romerogustavoesteban heavynucleiattheendofthecosmicrayspectrum
AT combijorgeariel heavynucleiattheendofthecosmicrayspectrum
bdutipo_str Repositorios
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