Mignon, je cite:
In this model, the supernova was not the result of the detonation of a single star, but rather a blast that occurred when two white dwarf stars spiraled together and merged. The blue dot in the center is hypothesized to be a zombie star, the remnant white dwarf that somehow survived this supernova-level explosion.
1 De Villeurbanne
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Malheureusement, le financement du télescope Chandra a été considérablement réduit, ce qui limite les explorations de ce type.