Phys. Rev. Lett. 87, 081101 (2001) [4 pages]Auger Test of the Cen A Model of Highest Energy Cosmic RaysReceived 26 March 2001; revised 15 May 2001; published 31 July 2001 If, as recently proposed by Farrar and Piran, Cen A is the source of cosmic rays detected above the Greisen-Zatsepin-Kuz’min cutoff, neutrons are ≈140 more probable than protons to be observed along its line of sight. This is because the proton flux is rendered nearly isotropic by O(μG) intergalactic magnetic fields. With the anticipated aperture of the Southern Auger Observatory, one may expect on the order of 2 neutron events /year above 1020 eV in the line of sight of Cen A. © 2001 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.87.081101
DOI:
10.1103/PhysRevLett.87.081101
PACS:
98.70.Sa, 98.54.Gr, 98.62.En
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