New Type Of Supernova Lacks "Oomph"

False colour image of the supernova SN2002bj (blue) on top of its host galaxy, NGC1821. Credit: D. Poznanski; W. Li; and A.V. Filippenko

From Cosmos:

SYDNEY: Astronomers have discovered a new type of supernova - the thermonuclear blast from a dying star - which happens three to four times faster than other known types.

Writing in the U.S. journal Science, the researchers, led by astronomer Dovi Poznanski from the University of California, Berkeley, said it is the fastest evolving supernova they have ever seen.

"It was three to four times faster than a standard supernova, basically disappearing within 20 days. Its brightness just dropped like a rock," he said.

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