Glimpse of galactic merger, via James Webb telescope, may explain presence of monster black holes
An image from Nasa showing the ZS7 galaxy system, where cosmologists detected a collision of black holes, one of which was estimated to be 50m times the mass of the sun.An image from Nasa showing the ZS7 galaxy system, where cosmologists detected a collision of black holes, one of which was estimated to be 50m times the mass of the sun.A pair of black holes has been observed colliding in the ancient universe for the first time.
Prof Roberto Maiolino, an astrophysicist at the University of Cambridge, and a member of team behind the observations, said: “One problem that we have in cosmology is explaining how these black holes manage to grow so big. In the past we have always talked about gobbling matter very quickly or being born big. Another possibility is that they grow very fast by merging.”
The latest observations use the Webb telescope’s ability to get to the far reaches of the cosmos and so have provided the first glimpse of galactic mergers in the distant past.Impression of a growing supermassive black hole pulling in matter .In the process of merging, black holes gobble up huge quantities of matter and also release a lot of energy, and this activity has distinctive spectral features that allow astronomers to identify them.
Subsequent observations showed that, of black holes detected at this time period, around a third appeared to be in the process of merging. “This could be a real channel for the rapid growth of early black holes,” he said.
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