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Gamma rays precursors and afterglows surrounding UHECR events: Z-burst model is still alive | | D.Fargion
; A. Colaiuda
; | | Date: |
1 Sep 2004 | | Journal: | Nuclear Physics B. (Proc. Suppl.) 136 (2004) 256-262 | | Subject: | astro-ph gr-qc hep-ph | | Abstract: | The Z-burst model and the direct propagation of UHE proton in negligible extragalactic magnetic fields produce gamma-rays afterglows and precursors halos, respectively at GeVs and TeV energy band a few degree around the UHECR arrival direction. The possible correlation of UHECR clusters (doublet, triplet) with nearby BL Lac sources at E_p = 4*10^19 eV offer a test for this necessary Gamma-UHECR trace. We estimate the secondary gamma energy and spectra and we suggest how to disentangle between the different scenarios. We show why Z-Burst model is still the most realistic model to explain UHECR behaviour and their correlation to known BL Lac sources. | | Source: | arXiv, astro-ph/0409022 | | Services: | Forum | Review | PDF | Favorites | |
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