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  The need for a local source of ultrahigh-energy cosmic-ray nuclei

Taylor, A. M., Ahlers, M., & Aharonian, F. A. (2011). The need for a local source of ultrahigh-energy cosmic-ray nuclei. Physical Review D, 84(10): 105007. doi:10.1103/PhysRevD.84.105007.

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1107.2055 (Preprint), 512KB
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1107.2055
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File downloaded from arXiv at 2011-11-11 11:57
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http://prd.aps.org/abstract/PRD/v84/i10/e105007 (Verlagsversion)
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 Urheber:
Taylor, Andrew M.1, Autor
Ahlers, Markus2, Autor
Aharonian, Felix A.3, 4, Autor           
Affiliations:
1ISDC, Chemin d'Ecogia 16, Versoix, CH-1290, SWITZERLAND, ou_persistent22              
2C.N. Yang Institute for Theoretical Physics, SUNY at Stony Brook, Stony Brook, NY 11794-3840, USA, ou_persistent22              
3Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society, ou_904550              
4Dublin Institute for Advanced Studies, 5 Merrion Square, Dublin 2, IRELAND, ou_persistent22              

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Schlagwörter: Astrophysics, High Energy Astrophysical Phenomena, astro-ph.HE
 Zusammenfassung: Recent results of the Pierre Auger (Auger) fluorescence detectors indicate an increasingly heavy composition of ultra-high energy (UHE) cosmic rays (CRs). Assuming that this trend continues up to the highest energies observed by the Auger surface detectors we derive the constraints this places on the local source distribution of UHE CR nuclei. Utilizing an analytic description of UHE CR propagation we derive the expected spectra and composition for a wide range of source emission spectra. We find that sources of intermediate-to-heavy nuclei are consistent with the observed spectra and composition data above the ankle. This consistency requires the presence of nearby sources within 60 Mpc and 80 Mpc for silicon and iron only sources, respectively. The necessity of these local sources becomes even more compelling in the presence nano-Gauss local extragalactic magnetic fields.

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 Datum: 2012-02-132011-11-07
 Publikationsstatus: Online veröffentlicht
 Seiten: 10 pages, 8 figures
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
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 Identifikatoren: arXiv: 1107.2055
DOI: 10.1103/PhysRevD.84.105007
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Titel: Physical Review D
  Andere : Phys. Rev. D.
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: Lancaster, Pa. : Published for the American Physical Society by the American Institute of Physics
Seiten: - Band / Heft: 84 (10) Artikelnummer: 105007 Start- / Endseite: - Identifikator: ISSN: 0556-2821
CoNE: https://pure.mpg.de/cone/journals/resource/111088197762258