Astronomy and Astrophysics – Astrophysics
Scientific paper
2007-11-07
Astronomy and Astrophysics
Astrophysics
4 pages, 4 figures, Proceedings of the 30th ICRC, Merida, Mexico, 2007
Scientific paper
Large-scale accretion shocks around massive clusters of galaxies, generically expected in hierarchical scenarios of cosmological structure formation, are shown to be potential sources of the observed ultrahigh energy cosmic rays (UHECRs) by accelerating a mixture of heavy nuclei including the iron group elements. Current observations can be explained if the source composition at injection for the heavier nuclei is somewhat enhanced from simple expectations for the accreting gas. The proposed picture should be testable by current and upcoming facilities in the near future through characteristic features in the UHECR spectrum, composition and anisotropy. The associated X-ray and gamma-ray signatures are also briefly discussed.
Armengaud Eric
Inoue Susumu
Miniati Francesco
Sigl Guenter
No associations
LandOfFree
Ultrahigh energy cosmic rays as heavy nuclei from cluster accretion shocks does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Ultrahigh energy cosmic rays as heavy nuclei from cluster accretion shocks, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ultrahigh energy cosmic rays as heavy nuclei from cluster accretion shocks will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-377185