When it comes to going out with style, nothing comes close to the end of a white dwarf. Their thermonuclear self-destruction ranks among the most powerful explosions in the cosmos, forcing the star to wink out of existence in a blaze of glory.
orbiting nearby, life might go on a smidge longer as it siphons off a little extra gas.
Usually, there's nothing of note left in the space once occupied by the white dwarf – just an expanding cloud of star guts drifting out into the cosmos, faintly glowing with residual radiation. They might not even be all that destructive, with signs of high-density matter with hallmarks of a thick photosphere spotted in the aftermath of a handful of these less impressive supernovae.Color images of NGC 1309 both before and after SN 2012Z. The left panel shows the Hubble Heritage image of NGC 1309. The top-middle panel shows a zoom-in on the position of the supernova from the pre-explosion image. The top-right shows SN~2012Z from the 2013 visit.
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