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

  title={The sub-energetic γ-ray burst GRB 031203 as a cosmic analogue to the nearby GRB 980425},
  author={A. Soderberg and S. Kulkarni and E. Berger and D. W. Fox and M. Sako and D. Frail and A. Gal-yam and D. S. Moon and S. B. Cenko and S. Yost and M. Phillips and S. Persson and W. Freedman and P. Wyatt and R. Jayawardhana and D. Paulson},
  • A. Soderberg, S. Kulkarni, +13 authors D. Paulson
  • Published 2004
  • Physics
  • Nature
  • Over the six years since the discovery of the γ-ray burst GRB 980425, which was associated with the nearby (distance ∼40 Mpc) 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 calorimetry showed that the explosion was sub-energetic by a factor of 10. Here we report observations of the radio and X-ray afterglow of the recent… CONTINUE READING
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