# supernovae: individual (SN 2006gy)

## New Observations of the Very Luminous Supernova 2006gy: Evidence for Echoes

Supernova (SN) 2006gy was a hydrogen-rich core-collapse SN that remains one of the most luminous optical SNe ever observed. The total energy budget (>2 × 10$^51$ erg radiated in the optical alone) poses many challenges for standard SN theory. We …

## Late-Time Observations of SN 2006gy: Still Going Strong

Owing to its extremely high luminosity and long duration, supernova (SN) 2006gy radiated more energy in visual light than any other known SN. Two hypotheses to explain its high luminosity at early times—that it was powered by shock interaction with …

## SN 2006gy: Discovery of the Most Luminous Supernova Ever Recorded, Powered by the Death of an Extremely Massive Star like η Carinae

We report the discovery and early observations of the peculiar Type IIn supernova (SN) 2006gy in NGC 1260. With a peak visual magnitude of about -22, it is the most luminous supernova ever recorded. Its very slow rise to maximum took åisebox-0.5ex 70 …