A hypernova (or collapsar) is a very energetic supernova when a massive star (>30 solar masses) collapses to form a rotating black hole emitting twin energetic jets and surrounded by an accretion disk. They release energy an order of magnitude higher than most supernovae, and produce long gamma ray bursts.
| Nova | Energy release |
|---|---|
| Nova | 1037 W |
| Kilonova | 1038 W |
| Supernova | 1044 W |
| Hypernova | 1045 W |