Non High Energy Gamma Ray Bursts as Sources of Ultra High Energy Cosmic Rays

Astronomy and Astrophysics – Astrophysics

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Scientific paper

I proposed, a (C+O) star and a neutron star (black hole) close binary system with separation ~0.2 R_odot as a progenitor of NHE (Non High Energy) GRBs (Gamma Ray Bursts). In this model a new born pulsar should be a milli-second pulsar(MSP) (P ~1ms) and alpha - Omega dynamo in the first 10s after the bounce of the core will generate a superstrong magnetic field (B ~1016G). The beam of the energy from the super strongly magnetized milli-second pulsar (SSM-MSP) can punch a hole in the supernova ejecta. SSM-MSPs can accelerate protons up to ~3 times 1022(P/1ms)^{-2} (B/1016G)eV. If a few % (~1050erg) of the beam energy of SSM-MSP in NHE-GRB event (> 5 times 1051erg) is in the form of high energy protons of energy ~1020eV, the flux of the observed UHECRs (Ultra High Energy Cosmic Rays) can be explained. Then along the direction of each UHECR, a supernova remnant should be found.

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