“Birth of a Monster” –Dual Quasar -Can Outshine 10,000 Galaxies for Millions of Years


"The Birth of a Monster" --A Dual Quasar -Outshines 10,000 Galaxies for Millions of Years


Astronomers have discovered a rare dual quasar–a quasi-stellar radio source, one of the most luminous, powerful engines known in the universe, powered by supermassive black holes that are millions to billions times more massive than our Sun– that existed 4.6 billion years ago, 13,000 light years apart near the center of a single massive galaxy. By comparison, the gargantuan explosion of a single supernova can outshine an entire galaxy for a few weeks; a single quasar can outshine 10,000 galaxies for millions of years.