# The signature of supernova ejecta in the X-ray afterglow of the γ-ray burst 011211

@article{Reeves2002TheSO,
title={The signature of supernova ejecta in the X-ray afterglow of the $\gamma$-ray burst 011211},
author={J. Reeves and D. Watson and J. Osborne and K. Pounds and P. O’Brien and A. Short and M. Turner and M. Watson and K. Mason and M. Ehle and N. Schartel},
journal={Nature},
year={2002},
volume={416},
pages={512-515}
}
Now that γ-ray bursts (GRBs) have been determined to lie at cosmological distances, their isotropic burst energies are estimated to be as high as 1054 erg (ref. 2), making them the most energetic phenomena in the Universe. The nature of the progenitors responsible for the bursts remains, however, elusive. The favoured models range from the merger of two neutron stars in a binary system to the collapse of a massive star. Spectroscopic studies of the afterglow emission could reveal details of the… Expand
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