This object is surrounded by the "Napoleon's Hat" nebula. The light curve of this object displayed a "freeze-out" phase followed by a tail driven by the radioactive decay of titanium-44, the latter of which was detected by the INTEGRAL observatory. The distance to this object was determined by measuring the angular size of a ring surrounding it; this object is actually surrounded by three rings of
This object is surrounded by the "Napoleon's Hat" nebula. The light curve of this object displayed a "freeze-out" phase followed by a tail driven by the radioactive decay of titanium-44, the latter of which was detected by the INTEGRAL observatory. The distance to this object was determined by measuring the angular size of a ring surrounding it; this object is actually surrounded by three rings of gas of unknown origin, knots in which periodically brighten as they (*) collide with ejecta. Terrestrial instruments, including IMB, Baksan, and Kamiokande-II, detected 25 antineutrinos from this object, which marked the beginning of neutrino astronomy. Discovered by Ian Shelton, Oscar Duhalde, and Albert Jones, this phenomenon is found right outside the Tarantula nebula in the Large Magellanic Cloud, and its progenitor was a blue supergiant. For 10 points, name this highly studied core-collapse supernova, named for the year that it was observed.
This object is surrounded by the "Napoleon's Hat" nebula. The light curve of this object displayed a "freeze-out" phase followed by a tail driven by the radioactive decay of titanium-44, the latter of which was detected by the INTEGRAL observatory.
SN1987A