Researchers from the University of Southampton, working with colleagues in Cambridge and Barcelona, have shown it is theoretically possible that the pairs of black holes are being held in equilibrium by a cosmological force.
Black holes could be hiding in “perfectly balanced pairs”, mimicking a single black hole, according to a new theory by scientists.
But the new study, published in the journal Physical Review Letters, suggests this theory only works if the universe is standing still but, in one which is constantly moving, the scientists believe pairs of black holes could be existing while masquerading as one. “They are incredibly dense. A black hole could pack the mass of the Earth into a space the size of a pea.
“Even in the acceleration of an ever-expanding universe, the black holes remain locked at a fixed distance from one another. As hard as expansion may try to pull them apart, the gravitational attraction compensates.”
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