| Image search results - "seyfert" |
Seyfert Galaxy NGC 4151173 viewsAlthough the observatory is now enjoying its summer break there is still a backlog of images to process. NGC 4151 was one of the first Seyfert Galaxies to be discovered. The Seyferts are characterised by active galactic nuclei (AGN) which are very bright both in the optical and X-ray bands together with broad emission lines. They are powered by black holes at their centres and are believed to be similar to quasars but of somewhat lower energy. DR
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