Two supermassive blackholes have been spotted nestled close together in the heart of merging galaxy UGC4211.
At the center of most galaxies lies a single monster: a supermassive black hole, with a mass millions or even billions of times that of the sun. These lonely beasts typically sit alone in the heart of galaxies, but recent research found two of these monsters nestled close together in the galaxy UGC4211.
These are hungry black holes as well, as both members of the pair are growing in size. That surprised scientists, as they had expected to find a more sedate pairing. “Simulations suggested that most of the population of black hole binaries in nearby galaxies would be inactive because they are more common, not two growing black holes like we found,” explained lead author Michael Koss in a statement.
As well as the data from ALMA, which is a ground-based array of many telescopes looking in the radio wavelength, the researchers used data from other sources like the space-based Hubble telescope which observes in the visible light wavelength, and X-ray instruments which provided another view.
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