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News and Views
Nature 458, 40-41 (5 March 2009) | doi:10.1038/458040a; Published online 4 March 2009
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Astrophysics: Capturing black-hole pairs
Jon M. Miller1
Abstract
The observed growth of galaxies suggests that the black holes thought to lurk at their centres may find each other and merge. A large survey of galaxies has finally netted two black holes in a tight pairing.
The idea of black holes merging may seem like the height of scientific extremity, but such mergers may be commonplace if the prevailing theory of structure formation in the Universe is correct. Scant context is provided by the solar neighbourhood: stars within a galaxy do not merge because they are very small relative to their separations.
- Jon M. Miller is in the Department of Astronomy, University of Michigan, Ann Arbor, Michigan 48109, USA.
Email: jonmm@umich.edu
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