News

X-ray telescopes find evidence for wandering black hole

6 October 2016 Astronomy Now

Astronomers have used NASA’s Chandra X-ray Observatory and ESA’s XMM-Newton X-ray observatory to discover an extremely luminous, variable X-ray source located outside the centre of its parent galaxy. This peculiar object could be a wandering black hole that came from a small galaxy falling into a larger one.

News

Ultra-bright pulsar is an X-ray mystery

13 October 2014 Keith Cooper

Blinding bursts of X-rays are coming from a supercharged pulsar lying in a galaxy 10 million light years away, more powerful than any pulsar ever seen before. The discovery, by NASA’s Nuclear Spectroscopic Telescope Array, or NuSTAR, challenges what we thought we knew about these extreme objects.