Abell 400

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Two supermassive black holes spiralling towards merger near the center of NGC 1128, some 25,000 light years away from each other.

Abell 400 is a galaxy cluster, containing a galaxy with two supermassive black holes spiralling towards merger.

These two supermassive black holes are contained in NGC 1128. The galaxy, microwave radio jets, multi-million degree X-ray producing gas and resultant radio source is known as 3C 75.

The black holes are an estimated 25,000 light years apart, and thus will take millions of years to collide. Should the two supermassive black holes merge, they will form a single super-supermassive black hole.

[edit] External links

• Pair of black holes locked in death dance (CNN) Thursday, April 6, 2006; Posted: 2:46 p.m. EDT (18:46 GMT)
• Black Holes Bound to Merge (SPACE.com) 06 April 2006 11:48 am ET
• Black Holes Dance With Incredible Violence (SpaceDaily) Apr 12, 2006

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