How Often do Giant Black Holes Become Hyperactive?

A new study from NASA's Chandra X-ray Observatory tells scientists how often the biggest black holes have been active over the last few billion years. The object could help scientists better understand how massive stars explode, which ones leave behind black holes or neutron stars, and how many black holes are in our galaxy and others.

This discovery clarifies how supermassive black holes grow and could have implications for how the giant black hole at the center of the Milky Way will behave  [...]

Full story at http://spacefellowship.com/news/art24491/how-often-do-giant-black-holes-become-hyperactive-.html