The difference about the center of a quasar, when contrasted with a spiral galaxy are
For Quasars:
- Quasars are known to move with a lot of speed.
- Quasar's often emit lines shifts far to the red wavelength as far as 15% to 96% the speed of light
- Quasars are often very bright and more distant objects and can be detected without observing the underlying galaxies.
- They are also very luminous centers of galaxies in their infancy.
- They are supermassive black holes surrounded by bright accretion discs
The Spiral galaxies
- Spirals are known to be flattened or 'disk' galaxies.
- They rotate differentially. That is the time to complete a full rotation often increases with distance from the center.
- The disk often wind up into a spiral form as a result of disturbance.
- A lot of spiral galaxies has a central bulge often surrounded by a flat, rotating disk of stars.
- two-thirds of spiral galaxies has a bar structure via their center.
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