Monday 14 October 2013

Quasars :

A Quasar (Also known as a quasi-stellar radio source) is a very energetic and distant active galactic nucleus.
Quasars are super-insanely and extremely luminous!
They're super-amazingly bright. They were first identified as being high-redshift sources of electromagnetic energy, including radio waves and visible light, that were point like similar to stars rather than extended sources similar to galaxies.

A quasar is a compact region in the center of a massive galaxy that surrounds it's central super massive black hole.
It's size is like about 10-10,000 times the size of a Schwarzschild radius of a black hole
A quasar is powered by an accretion disc around the black hole. A quasar generates more energy than entire galaxies.

Scientists have found about 200,000 Quasars.
A quasar would shut down if the black hole near the center of the galaxy in which it resides is done with consuming everything in the host galaxy.





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