NGC 1365 Spin central black hole

This image of the spiral galaxy NGC 1365 was taken by the powerful HAWK-I infrared camera on ESO’s Very Large Telescope at Paranal Observatory in Chile.
CREDIT: ESO/P. Grosbøl

3D by Detthow G.G. ( Salsa J Soft )

 

From             http://www.space.com/19980-monster-black-hole-spin-discovery.html

 

www.space.com  

 

Astronomers have made the first reliable measurement of a supermassive black hole's spin, showcasing a technique that could help unravel the mysteries of these monsters' growth and evolution.

The enormous black hole at the center of the spiral galaxy NGC 1365 is spinning about 84 percent as fast as Einstein's general theory of relativity allows it to, researchers determined. The find demonstrates that at least some supermassive black holes are rotating rapidly — a claim previous studies had hinted at but failed to confirm.
"It's the first time that we can really say that black holes are spinning," study co-author Fiona Harrison, of Caltech in Pasadena, told SPACE.com. "The promise that this holds for being able to understand how black holes grow is, I think, the major implication."