Astronomy and Astrophysics – Astrophysics
Scientific paper
2000-10-03
AIP Conf.Proc. 566 (2000) 289-294
Astronomy and Astrophysics
Astrophysics
6 pages, 4 figures. Prepared for the Proceedings of the International Workshop on Observing Ultra High Energy Cosmic Rays from
Scientific paper
10.1063/1.1378638
We discuss several effects due to lensing of ultra high energy cosmic rays by the regular component of the galactic magnetic field. Large flux magnification around caustics can be a significant source of clustering in the arrival directions of UHECRs of comparable energy. We also discuss lensing effects in a hypothetical galactic magnetic wind model recently proposed to explain the extremely high energy cosmic rays so far observed as originating from a single source (M87). This model implies large flux magnifications, which reduce the power requirements on the source, and a significant asymmetry in the expected flux between the north and south galactic hemispheres.
Harari Diego
Mollerach Silvia
Roulet Esteban
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