Intl research finds clue on spinning of black hole

Observation data from an international research team composed of researchers from 45 institutions around the world has found that the supermassive black hole jet at the center of one of the largest galaxies in the local universe, Messier 87, exhibits periodic oscillations.

The phenomenon is in line with Albert Einstein's general theory of relativity, which predicts that if a black hole is spinning, it will cause the surrounding matter to move along the direction of the black hole spin, an effect known as "frame dragging".

The results of the study, conducted over the past two decades, successfully linked the dynamics of the black hole jet at the center of the M87 galaxy with the state of the supermassive black hole at the center of the galaxy, providing observational evidence for the existence of the spin of the M87 black hole.