"Jerry Fishman, chief scientist for gamma ray astronomy at NASA's Marshall Space Flight Center, said most supernovae do not generate these high-speed emissions, jets or blobs and thus have no potential to generate a GRB.

Only a few, which he and other researchers have come to call hypernovae, are capable. Their origins involve stars 50 to 100 times as massive as our Sun."

http://www.space.com/scienceastronomy/astronomy/gammaray_bursts_010522-2.html

If you don't care for reality, just wait a while; another will be along shortly. --A Rose