Propagation of UHE Protons through Magnetized Cosmic Web

Astronomy and Astrophysics – Astrophysics

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

24 pages, 8 figures, corrected typos

Scientific paper

10.1086/588278

If ultra-high-energy cosmic rays (UHECRs) originate from extragalactic sources, understanding the propagation of charged particles through the magnetized large scale structure (LSS) of the universe is crucial in the search for the astrophysical accelerators. Based on a novel model of the turbulence dynamo, we estimate the intergalactic magnetic fields (IGMFs) in cosmological simulations of the formation of the LSS. Under the premise that the sources of UHECRs are strongly associated with the LSS, we consider a model in which protons with E >10^{19} eV are injected by sources that represent active galactic nuclei located inside clusters of galaxies. With the model IGMFs, we then follow the trajectories of the protons, while taking into account the energy losses due to interactions with the cosmic background radiation. For observers located inside groups of galaxies like ours, about 70% and 35% of UHECR events above 60 EeV arrive within ~15 degree and ~5 degree, respectively, of the source position with time delays of less than ~10^7 yr. This implies that the arrival direction of super-GZK protons might exhibit a correlation with the distribution of cosmological sources on the sky. In this model, nearby sources (within 10 - 20 Mpc) should contribute significantly to the particle flux above ~10^{20} eV.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Propagation of UHE Protons through Magnetized Cosmic Web 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 Propagation of UHE Protons through Magnetized Cosmic Web, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Propagation of UHE Protons through Magnetized Cosmic Web will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-496184

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.