Martin Lemoine and Eli Waxman JCAP11(2009)009 doi:10.1088/1475-7516/2009/11/009
Anisotropy vs chemical composition at ultra-high energies
Martin Lemoinea and Eli Waxmanb
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10 EeV, we show that the apparent clustering toward Cen A cannot be attributed to heavy nuclei. Similar conclusions are drawn regarding the apparent excess correlation with nearby active galactic nuclei. We then discuss a robust lower bound to the magnetic luminosity that a source must possess in order to be able to accelerate particles of charge Z up to 100 EeV, LB 
1045 Z−2 erg/s. Using this bound in conjunction with the above conclusions, we argue that the current PAO data does not support the model of cosmic ray origin in active radio-quiet or even radio-loud galaxies. Finally, we demonstrate that the apparent clustering in the direction of Cen A can be explained by the contribution of the last few gamma-ray bursts or magnetars in the host galaxy thanks to the scattering of the cosmic rays on the magnetized lobes.
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E-print Number: 0907.1354
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- PACS
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96.50.sb Composition, energy spectra and interactions
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- Dates
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Issue 11 (November 2009)
Received 24 July 2009, accepted for publication 9 October 2009
Published 5 November 2009
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Anisotropy vs chemical composition at ultra-high energies
Martin Lemoine and Eli Waxman JCAP11(2009)009
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