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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<p><a href="http://www.physorg.com/news119115673.html">Hidden Population of Powerful Black Holes Revealed in Large Sky Survey</a></p> <p>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. </p>