A surge of light at the birth of a supernova

  title={A surge of light at the birth of a supernova},
  author={M. Bersten and G. Folatelli and F. Garc{\'i}a and S. V. Dyk and O. Benvenuto and M. Orellana and V. Buso and J. L. S{\'a}nchez and M. Tanaka and K. Maeda and A. Filippenko and W. Zheng and T. Brink and S. Cenko and T. Jaeger and S. Kumar and T. Moriya and K. Nomoto and D. Perley and I. Shivvers and N. Smith},
It is difficult to establish the properties of massive stars that explode as supernovae. The electromagnetic emission during the first minutes to hours after the emergence of the shock from the stellar surface conveys important information about the final evolution and structure of the exploding star. However, the unpredictable nature of supernova events hinders the detection of this brief initial phase. Here we report the serendipitous discovery of a newly born, normal type IIb supernova (SN… Expand
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