This black hole is spinning very slowly and we don’t understand why.

“Each black hole can only be defined by two numbers: its spin and its mass.” This was explained by Julia Sisk-Raines of the Institute of Astronomy at the University of Cambridge, who conducted a new study of the superarray, which is about 3.6 billion light-years away from us.

While measuring its mass is difficult but doable, recording its rotation is a real challenge. For this, the team of scientists used data from the Chandra X-ray Observatory.


NASA/CXC/Univ. Cambridge

“We found that the black hole in H1821+643 is spinning about half as fast as most black holes, which have a mass between one million and ten million suns,” said astronomer Christopher Reynolds, co-author of the paper reporting Chandra’s measurement results. “The Million Dollar Question: Why?”

One possible explanation is that supermassive black holes like this one (it contains 30 billion times the mass of the sun) formed by merging with other black holes during collisions between their galaxies. It is also possible that the outer disk of this black hole was interrupted by a collision that sent gas flying in random directions during the event.

This type of activity will affect the spin rate of the black hole, slow it down, or even spin it in a completely new direction.

  More fragile rivers and lakes, a global map to protect them - Science and Technology


If you liked reading This black hole is spinning very slowly and we don’t understand why.

Please share with your friends and family.