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The sub-energetic γ-ray burst GRB 031203 as a cosmic analogue to the nearby GRB 980425

Cenko, S. B.; Berger, E.; Frail, D. A. +13 more

Over the six years since the discovery of the γ-ray burst GRB 980425, which was associated with the nearby (distance ~40Mpc) supernova 1998bw, astronomers have debated fiercely the nature of this event. Relative to bursts located at cosmological distance (redshift z ~ 1), GRB 980425 was under-luminous in γ-rays by three orders of magnitude. Radio …