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studied under other wavelengths, it becomes clear that the luminosity of their cores is of comparable intensity to the luminosity of whole galaxies the size of the Milky Way.

Seyfert galaxies are named after Carl Seyfert, who first described this class in 1943.

Discovery

Seyfert galaxies were first detected in 1908 by Edward A. Fath and Vesto Slipher,

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