Ultrahigh energy cosmic rays as heavy nuclei from cluster accretion shocks

Details Ultrahigh energy cosmic rays as heavy nuclei from cluster accretion shocks Ultrahigh energy cosmic rays as heavy nuclei from cluster accretion shocks

2007-01-07

arxiv.org/abs/astro-ph/0701167v3

Astronomy and Astrophysics

Astrophysics

revised version for PRD; 5 pages, 4 figures

Scientific paper

Large-scale accretion shocks around massive clusters of galaxies, generically expected in the cold dark matter scenario of cosmological structure formation, are shown to be plausible 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 clearly testable by current and upcoming facilities in the near future through characteristic features in the UHECR spectrum, composition and anisotropy, in particular the rapid increase of the average mass composition with energy from $10^{19}$ to $10^{20}$ eV.

Affiliated with

Also associated with

No associations

Rating

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.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-369936