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QUASARS

QUASARS

Context:

Recently, a group of astronomers have discovered a dozen quasars that were distorted by naturally occurring cosmic lenses. With this discovery, the quantity of realized quasars have expanded by 25%. This can assist to determine the expansion rate of the universe and will also help address other mysteries.

What are Quasars?

  • These are luminous cores of distant galaxies that are powered by black holes.
  • Their mass is millions to billions of times the mass of the sun.
  • The most powerful quasars have luminosities thousand times more than the Milky Way galaxy.
  • The closest Quasar to the earth is Markarian 231 which is 600 million years away from the earth.
  • Quasars are generally found in the centres of active galaxies.

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