Observational Constraints on Quasar Black Hole Mass Distributions, Eddington Ratio Distributions, and Lifetimes
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Observational Constraints on Quasar Black Hole Mass Distributions, Eddington Ratio Distributions, and Lifetimes. / Kelly, Brandon C.; Vestergaard, Marianne; Fan, X.; Hopkins, P.; Hernquist, L.; Siemiginowska, A.
In: Bulletin of the American Astronomical Society, Vol. 215, 01.01.2010, p. 581.Research output: Contribution to journal › Journal article › Research
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TY - JOUR
T1 - Observational Constraints on Quasar Black Hole Mass Distributions, Eddington Ratio Distributions, and Lifetimes
AU - Kelly, Brandon C.
AU - Vestergaard, Marianne
AU - Fan, X.
AU - Hopkins, P.
AU - Hernquist, L.
AU - Siemiginowska, A.
PY - 2010/1/1
Y1 - 2010/1/1
N2 - I will present the black hole mass function (BHMF) of broad line quasars in the SDSS DR3. We employ a powerful Bayesian statistical technique that corrects for incompleteness and the statistical uncertainty in the mass estimates. We find evidence that the most massive black hole appeared as quasars earlier in the universe, and that most quasars are not radiating at or near the Eddington limit. I will also present constraints on the quasar lifetime and maximum black hole mass, derived from the mass functions.
AB - I will present the black hole mass function (BHMF) of broad line quasars in the SDSS DR3. We employ a powerful Bayesian statistical technique that corrects for incompleteness and the statistical uncertainty in the mass estimates. We find evidence that the most massive black hole appeared as quasars earlier in the universe, and that most quasars are not radiating at or near the Eddington limit. I will also present constraints on the quasar lifetime and maximum black hole mass, derived from the mass functions.
M3 - Journal article
VL - 215
SP - 581
JO - American Astronomical Society. Bulletin
JF - American Astronomical Society. Bulletin
SN - 0002-7537
ER -
ID: 44201035