Astronomy and Astrophysics – Astrophysics
Scientific paper
1998-11-12
Phys.Rev.Lett.76:3878-3879,1996
Astronomy and Astrophysics
Astrophysics
Comment on a letter with the above title published by E. Waxman in PRL 75, 386 (1995). Submitted for publication in PRL/Commen
Scientific paper
10.1103/PhysRevLett.76.3878
In a letter with the above title, published some time ago in PRL, Waxman made the interesting suggestion that cosmological gamma ray bursts (GRBs) are the source of the ultra high energy cosmic rays (UHECR). This has also been proposed independently by Milgrom and Usov and by Vietri. However, recent observations of GRBs and their afterglows and in particular recent data from the Akeno Great Air Shwoer Array (AGASA) on UHECR rule out extragalactic GRBs as the source of UHECR.
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