Plenty of black holes do-si-do

Team finds 33 merging galaxies with 'waltzing' black-hole pairs

By Lisa Grossman, 16:01 PM January 4, 2010

WASHINGTON — The universe is one big dance party for black holes. New observations from the W.M. Keck Observatory in Hawaii and the Hubble Space Telescope found 33 merged galaxies in which pairs of supermassive black holes are “waltzing” around the galactic centers.

“Our result shows that such waltzing black holes are much more common than we previously knew,” said Julie Comerford of the University of California, Berkeley. Comerford presented her results on January 4 at the winter meeting o...

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