Population III stars profoundly altered the universe when they exploded as hypernovae (hypernovae is a generic term for stellar explosions that are considerably more powerful than supernovae).
But the first hypernovae dispersed all their heavy elements into the surrounding gas.
5-meter mirror, JWST should find hundreds of Pop III hypernovae per square degree surveyed in one year.
A popular theoretical model to explain hypernovae
and GRBs; a very massive, rapidly rotating star whose core collapses into a black hole at the end of its life.
Many now suspect that hypernovae and gamma-ray bursts are one and the same.
Hypernovae seem to be rare, judging by the paucity of their possible remnants.
The case for hypernovae
suddenly seemed to become much stronger on April 25th, when a 40-second gamma-ray burst was pinned down with arcminute accuracy near the barred spiral galaxy ESO 184-G82.