PSN J12015272-1852183 is also getting attention in the CosmoQuest forum
http://cosmoquest.org/forum/showthre...n-The-Antennae!
This SN has been identified with a Wolf-Reyet progenitor, a key to understanding the detonation mechanism. The initial ejecta was moving outward at 10% of the speed of light, which is impressive energy considering the amount of matter involved, some 30% to 40% of the mass of the Sun.
=Dana in SA