English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
Add to Basket
  Local TagsRelease HistoryDetailsSummary

Released
Journal Article

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

MPS-Authors
/persons/resource/persons30244

Aharonian,  Felix A.
Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society;
Dublin Institute for Advanced Studies, 5 Merrion Square, Dublin 2, IRELAND;

External Resource

http://prd.aps.org/abstract/PRD/v84/i10/e105007
(Publisher version)

Fulltext (restricted access)
There are currently no full texts shared for your IP range.
Fulltext (public)

1107.2055
(Preprint), 512KB

Supplementary Material (public)
There is no public supplementary material available
Citation

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.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0012-3065-A
Abstract
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.