Clocking the rotation rate of a supermassive black hole

11 March 2016 Astronomy Now

A recent observational campaign involving more than two dozen optical telescopes and NASA’s space-based SWIFT X-ray telescope allowed a team of astronomers to measure very accurately the rotational rate of one of the most massive black holes in the universe. The black hole powers a quasar called OJ 287 which lies about 3.5 billion light-years away from Earth.


GMRT discovers giant radio galaxy 9 billion light-years away

7 November 2015 Astronomy Now

A team of astronomers working at the National Centre for Radio Astrophysics have discovered an extremely rare galaxy of gigantic size using the Giant Metrewave Radio Telescope (GMRT). Known as J021659-044920, the galaxy is located about 9 billion light-years away, emits powerful radio waves and has an enormous extent of 4 million light-years.