DST astronomers trace huge optical flare from supermassive black hole discovered in the 1960s

Blazars, or feeding supermassive black holes, are popular astronomical subjects due to their complicated mechanism of emission.

from http://www.firstpost.com/tech/science/dst-astronomers-trace-huge-optical-flare-from-supermassive-black-hole-discovered-in-the-1960s-9313091.html