The GZK cutoff behind a Magnetized Universe

Astronomy and Astrophysics – Astrophysics

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

Scientific paper

10.1016/j.astropartphys.2004.04.

We study the effect of random extra-galactic magnetic fields on the propagation of protons of energy larger than $10^{19}$ eV. We show that for reasonable field values (in the 100 nG range) the transition between diffusive and ballistic regimes occurs in the same energy range as the GZK cutoff (a few $10^{19}$ eV). The usual interpretation of the flux reduction above the GZK energy in terms of a sudden reduction of the visible horizon is modified. Moreover, since the size of the diffusion sphere of a continuous source of cosmic rays is of the order of 10 Mpc, the local structure of the Universe and therefore of potential local astrophysical sources plays a dominant role in the expected spectrum. Under reasonable assumptions on the sources configurations the expected GZK cutoff is reduced.

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

The GZK cutoff behind a Magnetized Universe 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 The GZK cutoff behind a Magnetized Universe, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The GZK cutoff behind a Magnetized Universe will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-639180

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