Propagation of UHE protons through a magnetized large scale structure

Details Propagation of UHE protons through a magnetized large scale structure Propagation of UHE protons through a magnetized large scale structure

2007-06-18

arxiv.org/abs/0706.2597v2

J.Phys.Conf.Ser.120:062025,2008

Astronomy and Astrophysics

Astrophysics

4 page, 3 figures, To appear in the Proceedings of the 30th ICRC, Merida, Mexico, with minor changes

Scientific paper

10.1088/1742-6596/120/6/062025

The propagation of UHECRs is affected by the intergalactic magnetic fields that were produced during the course of the large scale structure formation of the universe. We adopt a novel model where the large scale extragalactic magnetic fields (EGMF) are estimated from local dynamic properties of the gas flows in hydrodynamic simulations of a concordance LambdaCDM universe. With the model magnetic fields, we calculate the deflection angle, time delay and energy spectrum of protons with E > 10^{19} eV that are injected at cosmological sources and then travel through the large scale structure of the universe, losing the energy due to interactions with the cosmic background radiation. Implications of this study on the origin of UHECRs are discussed.

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