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Kullat Nunu
2008-Jan-09, 10:50 PM
Space.com: Colossal Black Hole Shatters the Scales (http://www.space.com/scienceastronomy/080109-aas-massive-black-holes.html)


The most massive black hole in the universe tips the cosmic scales at 18 billion times more massive than the sun, astronomers suggest today at a meeting of the American Astronomical Society.

The black hole is located in the well-studied quasar OJ 287 3.5 billion light years away. For a some time the quasar has been known to flare regularly. Last time it erupted in September, 2007 (in fact, the previous flare 12 years ago became the first predicted extra-galactic event). The flares occur when a smaller companion supermassive black hole crosses the accretion disk of the monstrous one.