Question

What are Seyfert galaxies?

Answer 1

Answer!!

Seyfert galaxies are one of the two largest groups of active galaxies, along with quasars. ... These galaxies have supermassive black holes at their centers which are surrounded by accretion discs of in-falling material. The accretion discs are believed to be the source of the observed ultraviolet radiation.

Answer 2

Seyfert galaxies are one of the two largest groups of active galaxies, along with quasara. These galaxies have supermassive black hole at their centers which are surrounded by accretion discs of in-falling material. These accretion discs are believed to be the source of the abserved ultraviolet radiation.

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