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Old 08-06-2010, 09:54 PM
 
Location: Sarasota, Florida
15,397 posts, read 20,892,271 times
Reputation: 11100

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Most posters are probably familar with the term QUASAR, as it has been used extensively in advertising media brand names and of course mentioned in Scientific publications. But are you really sure what they are??? Until the 1980's even scientists were not sure themselves. However we now have a scientific census as to their true nature and power.

Essentially they are a very compact region in the center of a massive young galaxy, surrounding a central Super Massive Black Hole. A quasar's power comes from the accretion disk as it falls into the Black Hole.

They are the most luminous, powerful and energetic objects known to current science with an energy output equalling ONE THOUSAND Milky Way Galaxies or ONE TRILLION of our own Sun's power output.

The largest Quasars are estimated to be consuming 600 Earth masses per minute. Much of their apparent power is in the form of two massive jets originating opposite to the plane of the Black Hole's accretion disc.

There are more than 200,000 identified Quasars mainly from the SLOAN DIGITAL SKY SURVEY. Here are some links and videos for further information on this powerful phenomena>>>>>

Quasar - Wikipedia, the free encyclopedia

Galaxy - Wikipedia, the free encyclopedia

Active galactic nucleus - Wikipedia, the free encyclopedia

Accretion disc - Wikipedia, the free encyclopedia

Supermassive black hole - Wikipedia, the free encyclopedia

File:Black hole quasar NASA.jpg - Wikipedia, the free encyclopedia

Relativistic beaming - Wikipedia, the free encyclopedia

Sloan Digital Sky Survey - Wikipedia, the free encyclopedia


YouTube - ‪Quasars‬‎


YouTube - ‪Quasar Black Hole‬‎


YouTube - ‪Quasar in a Primeval Galaxy (or Protogalaxy)‬‎


YouTube - ‪Supermassive Black Holes‬‎


YouTube - ‪the Supermassive Black Hole at the center of our Galaxy‬‎

Remember that all galaxies are now thought to contain Black Holes but they generally are no longer "active". Billions of years ago the galaxies were denser and contained much more gas and matter for the Super Massive Black Hole to consume. This is why there are no active Quasars currently observed....they essentially used up all their available fuel long ago. .
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