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Seyfert galaxy
(redirected from Seyfert galaxies)

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Seyfert galaxy [′zī·fərt ‚gal·ik·sē]
(astronomy)
A galaxy that has a small, bright nucleus from which violent explosions may occur.
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Since then, astronomers have come to suspect that supermassive black holes cause the turmoil in the center of Seyfert galaxies.
Nearby spiral galaxy resembles our own Milky Way, say astronomers by Asian News International
Scientists have generally agreed that radiation pouring out of active galactic nuclei (AGNs) - quasars, Seyfert galaxies, and other compact sources - accounts for at least half the low-energy portion of the X-ray background.
Finding the origins of the X-ray sky by Cowen, Ron / Science News
For years, astronomers have suspected that relatively small black holes fuel the energetic activity found at the core of M51 and several other galaxies, called LINERs (for low-ionization narrow emission-line region), just as larger black holes may power the more luminous cores of Seyfert galaxies.
Galactic black hole: X marks the spot? by Cowen, Ron / Science News
 
 
 
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