Schawinski, Kevin; Justham, Stephen; Wolf, Christian; Podsiadlowski, Ph.; Sullivan, Mark; Steenbrugge, Katrien C; Bell, Tony; Roser, Hermann-Josef; Walker, Emma S; Astier, Pierre; Balam, Dave
Massive stars undergo a violent death when the supply of nuclear fuel in their cores is exhausted, resulting in a catastrophic "core-collapse" supernova. Such events are usually only detected at least a few days after the star has exploded. Observations of the supernova SNLS-04D2dc with the Galaxy Evolution Explorer space telescope reveal a radiative precursor from the supernova shock before the shock reached the surface of the star and show the initial expansion of the star at the beginning of...[Show more]
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