The Collimation and Energetics of the Brightest Swift Gamma-ray Bursts

@article{Cenko2009TheCA,
  title={The Collimation and Energetics of the Brightest Swift Gamma-ray Bursts},
  author={S. Cenko and D. Frail and F. Harrison and S. Kulkarni and E. Nakar and P. Chandra and N. Butler and D. Fox and A. Gal-yam and M. Kasliwal and J. Kelemen and D. Moon and P. Price and A. Rau and A. Soderberg and H. Teplitz and M. Werner and D. Bock and J. S. Bloom and D. Starr and A. Filippenko and R. Chevalier and N. Gehrels and J. Nousek and T. Piran},
  journal={The Astrophysical Journal},
  year={2009},
  volume={711},
  pages={641-654}
}
  • S. Cenko, D. Frail, +22 authors T. Piran
  • Published 2009
  • Physics
  • The Astrophysical Journal
  • Long-duration gamma-ray bursts (GRBs) are widely believed to be highly collimated explosions (bipolar conical outflows with half-opening angle θ ≈ 1°-10°). As a result of this beaming factor, the true energy release from a GRB is usually several orders of magnitude smaller than the observed isotropic value. Measuring this opening angle, typically inferred from an achromatic steepening in the afterglow light curve (a "jet" break), has proven exceedingly difficult in the Swift era. Here, we… CONTINUE READING
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