SN 2006gy and the core of its home galaxy, NGC 1260, viewed in x-ray light from the Chandra X-ray Observatory. The NGC 1260 galactic core is on the lower left and SN 2006gy is on the upper right.
SN 2006gy was an extremely energetic supernova, also referred to as a hypernova,[4] that was discovered on September 18, 2006. It was first observed by Robert Quimby and P. Mondol,[2][5] and then studied by several teams of astronomers using facilities that included the Chandra, Lick, and KeckObservatories.[6][7] In May 2007, NASA and several of the astronomers announced the first detailed analyses of the supernova, describing it as the "brightest stellar explosion ever recorded".[8] In October 2007, Quimby announced that SN 2005ap had broken SN 2006gy's record as the brightest-ever recorded supernova, and several subsequent discoveries are brighter still.[9][10]Time magazine listed the discovery of SN 2006gy as third in its Top 10 Scientific Discoveries for 2007.[11]
^Cite error: The named reference Chandra was invoked but never defined (see the help page).
^Leahy, Denis A. (2008). "Superluminous Supernovae SN2006gy, SN2005gj and SN2005ap: Signs for a New Explosion Mechanism". American Astronomical Society. 212: 255. Bibcode:2008AAS...212.6401L.
^Smith, Nathan; Li, Weidong; Foley, Ryan J.; Wheeler, J. Craig; Pooley, David; Chornock, Ryan; Filippenko, Alexei V.; Silverman, Jeffrey M.; Quimby, Robert; Bloom, Joshua S.; Hansen, Charles (2007). "SN 2006gy: Discovery of the Most Luminous Supernova Ever Recorded, Powered by the Death of an Extremely Massive Star like η Carinae". The Astrophysical Journal. 666 (2): 1116–1128. arXiv:astro-ph/0612617. Bibcode:2007ApJ...666.1116S. doi:10.1086/519949. S2CID14785067.