2016
DOI: 10.1007/s10511-016-9447-4
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Dependence of the Spin of Supermassive Black Holes on the Eddington Factor for Accretion Disks in Active Galactic Nuclei

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Cited by 2 publications
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“…There have been various attempts to indirectly estimate SMBH spins, e.g. from the Eddington factor of accretion discs (Piotrovich et al 2016) or jet properties (Kun et al 2013;Mościbrodzka et al 2016;Daly 2009;Daly & Sprinkle 2014;Daly 2016Daly , 2019. Evolution of the SMBH population over cosmic time also provides constraints on the radiative efficiency, which appears to be low (Soltan 1982;Merloni & Heinz 2008;Davies et al 2019), implying low spin values, but this estimate is degenerate with SMBH mass density and/or obscuration (Davies et al 2019).…”
Section: Discussion and Summarymentioning
confidence: 99%
“…There have been various attempts to indirectly estimate SMBH spins, e.g. from the Eddington factor of accretion discs (Piotrovich et al 2016) or jet properties (Kun et al 2013;Mościbrodzka et al 2016;Daly 2009;Daly & Sprinkle 2014;Daly 2016Daly , 2019. Evolution of the SMBH population over cosmic time also provides constraints on the radiative efficiency, which appears to be low (Soltan 1982;Merloni & Heinz 2008;Davies et al 2019), implying low spin values, but this estimate is degenerate with SMBH mass density and/or obscuration (Davies et al 2019).…”
Section: Discussion and Summarymentioning
confidence: 99%