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Seyfert Galaxies


 Go to the Gallery Home Page

 XMM-Newton Home > Gallery Home > Active Galactic Nuclei > Seyfert Galaxies

Seyfert Galaxies

These are AGN, where the host galaxy is still clearly visible beneath the dominating nuclear emission. They represent the closest and intrinsically faintest population of AGN. Their X-ray output is dominated by accretion. Depending on their optical properties, they are further classified into "type 1" (generally X-ray unobscured), and "type 2" (generally X-ray obscured) objects. They are believed to be the ultimate source of the X-ray Background.

 
1H0707-495 
 
ESO 198-G24 
 
NGC 1365 
 
NGC 1808 
 
NGC 4258 
 
NGC 4258 
 
NGC 4258 
 
NGC 7582 
 
NGC1365 
 
NGC3516 
 
NGC4258 

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XMM-Newton; Europe's X-Ray Observatory
Last update: 17-Oct-2012 by