SN 2007bi

SN 2007bi was an extremely energetic supernova discovered early in 2007 by the international Nearby Supernova Factory based at the U.S. Department of Energy's Lawrence Berkeley National Laboratory. The precursor star is estimated to have had 200 solar masses at the time of its formation and around 100 solar masses in its core when it went supernova. The explosion ejected more than 22 solar masses of silicon and other heavy elements into space during this supernova including more than 6 solar masses of radioactive nickel which caused the expanding gases to glow very brightly for many months.

SN 2007bi

Light curves for three photometric bands, plotted from data obtained from the Open Supernova Catalog[1]
Event type	Supernova
type Ic
Date	by Nearby Supernova Factory USA
Constellation	Virgo
Right ascension	13h 19m 20.19s
Declination	+08° 55' 44.3"
Epoch	J2000.0
Galactic coordinates	324.1496 +70.6427
Host	Anon J131920+0855

The supernova has been described as an unambiguous fit for the pair-instability supernova model.