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Using gravitational waves to catch runaway intergalactic black holes

4 July 2016 Astronomy Now

Researchers at the University of Cambridge have developed a new method for detecting and measuring one of the most powerful, and most mysterious, events in the universe — a black hole being kicked out of its host galaxy and into intergalactic space at speeds as high as 5,000 kilometres per second (11 million miles per hour).

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Seeds of supermassive black holes could be revealed by gravitational waves

27 June 2016 Astronomy Now

Gravitational waves captured by space-based detectors could help identify the origins of supermassive black holes, according to new computer simulations. Durham University’s Institute for Computational Cosmology ran the huge cosmological simulations that can be used to predict the rate at which gravitational waves caused by collisions between the monster black holes might be detected.

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Supermassive black hole found in an unlikely place

7 April 2016 Astronomy Now

A near-record 17-billion-solar-mass black hole discovered in a sparse area of the local universe indicates that these monster objects may be more common than once thought. The newly discovered supermassive black hole is in NGC 1600, an elliptical galaxy in the constellation Eridanus some 149 million light-years away.