Hidden Population of Powerful Black Holes Revealed in Large Sky Survey

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Hidden Population of Powerful Black Holes Revealed in Large Sky Survey

A team of Sloan Digital Sky Survey (SDSS-II) scientists, led by Princeton University's Reinabelle Reyes and including astronomers at Penn State, has identified a large number of "hidden quasars" -- supermassive black holes in the centers of galaxies that are shrouded in light-absorbing dust and gas.


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