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      A surge of light at the birth of a supernova

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          The DEIMOS spectrograph for the Keck II Telescope: integration and testing

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            The association of GRB 060218 with a supernova and the evolution of the shock wave

            Although the link between long gamma-ray bursts (GRBs) and supernovae has been established, hitherto there have been no observations of the beginning of a supernova explosion and its intimate link to a GRB. In particular, we do not know how the jet that defines a gamma-ray burst emerges from the star's surface, nor how a GRB progenitor explodes. Here we report observations of the relatively nearby GRB 060218 (ref. 5) and its connection to supernova SN 2006aj (ref. 6). In addition to the classical non-thermal emission, GRB 060218 shows a thermal component in its X-ray spectrum, which cools and shifts into the optical/ultraviolet band as time passes. We interpret these features as arising from the break-out of a shock wave driven by a mildly relativistic shell into the dense wind surrounding the progenitor. We have caught a supernova in the act of exploding, directly observing the shock break-out, which indicates that the GRB progenitor was a Wolf-Rayet star.
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              Evolutionary Processes in Close Binary Systems

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                Author and article information

                Journal
                Nature
                Nature
                Springer Nature
                0028-0836
                1476-4687
                February 21 2018
                February 21 2018
                : 554
                : 7693
                : 497-499
                Article
                10.1038/nature25151
                a6176e48-cdde-4a2c-8352-bc317d9bdc7b
                © 2018
                History

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