Results 121 to 130 of about 182 (138)
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Supermassive black hole quasar remnants
AIP Conference Proceedings, 1998Studies of the cosmic X-ray background indicate that it arises mainly from accretion powered AGNs and that the present-epoch mass density in the form of supermassive black holes must be at least an order of magnitude more than represented by currently active Seyfert galactic nuclei.
Elihu Boldt, Darryl Leiter
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Dependence of the spins of supermassive black holes in quasars on their cosmological redshifts
Astronomy Reports, 2015Data on the dependences of the masses and bolometric luminosities of Active Galactic Nuclei on their cosmological redshifts are used to determine the redshift dependences of their X-ray luminosities and the kinetic powers of their relativistic jets.
S. N. Yablokov, Yu. N. Gnedin
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The Demography of Supermassive Black Holes: Growing Monsters at the Heart of Galaxies
New Astronomy Reviews, 2009Francesco Shankar
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Cold, Clumpy Accretion Onto an Active Supermassive Black Hole
Nature, 2016Helen Russell +2 more
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The Quest for Dual and Binary Supermassive Black Holes: A Multi-Messenger View
New Astronomy Reviews, 2019Alessandra De Rosa +2 more
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Direct Formation of Supermassive Black Holes via Multi-Scale Gas Inflows in Galaxy Mergers
Nature, 2010Lucio Mayer, A Escala
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