The ultra-long Gamma-Ray Burst 111209A: the collapse of a blue supergiant?

@article{Gendre2013TheUG,
  title={The ultra-long Gamma-Ray Burst 111209A: the collapse of a blue supergiant?},
  author={B. Gendre and G. Stratta and J. L. Atteia and S. Basa and M. Boer and D. Coward and S. Cutini and V. D’Elia and E. Howell and A. K. L. P. Asdcinaf and Observatory of RomeINAF and University of Toulouse and Observatoire Midi Pyr'en'ee and Irapcnrs and University of Aix-Marseille and LAM-CNRS and ArtemisCNRS and Observatory of Haute ProvenceCNRS and U. W. Australia and IAPS-INAF},
  journal={The Astrophysical Journal},
  year={2013},
  volume={766},
  pages={30}
}
  • B. Gendre, G. Stratta, +17 authors IAPS-INAF
  • Published 2013
  • Physics
  • The Astrophysical Journal
  • We present optical, X-ray and gamma-ray observations of GRB 111209A, at a redshift of z = 0.677. We show that this event was active in its prompt phase for about 25000 seconds, making it the longest burst ever observed. This rare event could have been detected up to z ~ 1.4. Compared to other long GRBs, GRB 111209A is a clear outlier in the energy-fluence and duration plane. The high-energy prompt emission shows no sign of a strong black body component, as expected if the event was caused by a… CONTINUE READING
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