Gas swirls around a black hole due to its intense gravity, forming an accretion disk. These accretion disks, being among the most efficient energy conversion mechanisms in the universe ...

A new form of black hole archeology, linking spin to gas and dust, has revealed that these cosmic titans spin faster than ...

Observations from 2017 and 2018 by the Event Horizon Telescope have enhanced understanding of the supermassive black hole M87*, focusing on its turbulent accretion flow.

The 2018 observations confirmed the luminous ring seen in 2017, with a diameter of about 43 microarcseconds, matching theoretical predictions for the shadow of a 6.5 billion solar-mass black hole. The ...

A new computer simulation suggests this prolonged existence of accretion disks may owe itself to each disk being almost completely controlled by the magnetic fields of its respective black hole.

"The problem is that mass is hard to measure, and spin is even harder." The speed at which a black hole spins is difficult to distinguish from the speed at which the surrounding flattened cloud of gas ...

The speed at which a black hole spins is difficult to distinguish from the speed at which the surrounding flattened cloud of gas and dust — the accretion disk — rotates. "The challenge lies in ...

allows us to probe the properties of the black hole itself. We numerically model the appearance of these systems in X-rays (see Fig. 1). While current X-ray observatories cannot directly image the ...

How much does a black hole change in a year? Scientists may now have an idea, after taking a fresh look at the first-ever black hole to be imaged — the supermassive black hole M87*, , which ...

Some of this glowing matter envelops the black hole in a whirling region called an accretion disk. Even the matter that starts falling into a black hole isn't necessarily there to stay.