A group of international researchers at the in Germany recently discovered one of the rarest types of black holes in the universe. The researchers were observing a cluster of stars in the vicinity of a supermassive black hole named Sagittarius A (Sgr A) at the center of the Milky Way galaxy. They then discovered signs of an intermediate-mass black hole, a type of black hole that’s sometimes referred to as the “missing link” of black holes, according to .
Black holes range in size from supermassive to primordial and the intermediate sits above primordial in size. They are believed to have formed just after the Big Bang and act as “seeds” for creating supermassive black holes.
The star cluster believed to be the latest intermediate-mass black hole dubbed IRS 13 moved in an orderly pattern when they expected them to be randomly arranged. The researchers concluded that the star cluster had to be interacting with the supermassive black hole and “there must be something inside the cluster for it to be able to maintain its observed compact shape,” according to a statement from the University of Cologne.
Plans are underway to conduct further observations on the intermediate black hole. They will use the James Webb Space Telescope and the Extremely Large Telescope in Chile that’s currently under construction (and yes, that is ).
Scientists discovered in 2020 using the Hubble Space Telescope when they found the waves created by its formation. Until then, intermediate-mass black holes were considered to be a “missing link” between stellar-mass and supermassive black holes and could provide more insights on the formation of black holes and the universe.
