Matches in SemOpenAlex for { <https://semopenalex.org/work/W1782044501> ?p ?o ?g. }
- W1782044501 endingPage "98" @default.
- W1782044501 startingPage "98" @default.
- W1782044501 abstract "The radiative efficiency of active galactic nucleus (AGN) is commonly estimated based on the total mass accreted and the total AGN light emitted per unit volume in the universe integrated over time (the Soltan argument). In individual AGNs, thin accretion disk model spectral fits can be used to deduce the absolute accretion rate , if the black hole mass M is known. The radiative efficiency η is then set by the ratio of the bolometric luminosity Lbol to . We apply this method to determine η in a sample of 80 Palomar–Green quasars with well-determined Lbol, where is set by thin accretion disk model fits to the optical luminosity density, and the M determination based on the bulge stellar velocity dispersion (13 objects) or the broad line region. We derive a mean log η = −1.05 ± 0.52 consistent with the Soltan-argument-based estimates. We find a strong correlation of η with M, rising from η ∼ 0.03 at M = 107 M☉ and L/LEdd ∼ 1 to η ∼ 0.4 at M = 109 M☉ and L/LEdd ∼ 0.3. This trend is related to the overall uniformity of Lopt/Lbol in our sample, particularly the lack of the expected increase in Lopt/Lbol with increasing M (and decreasing L/LEdd), which is a generic property of thermal disk emission at fixed η. The significant uncertainty in the M determination is not large enough to remove the correlation. The rising η with M may imply a rise in the black hole spin with M, as proposed based on other indirect arguments." @default.
- W1782044501 created "2016-06-24" @default.
- W1782044501 creator A5022459860 @default.
- W1782044501 creator A5051102174 @default.
- W1782044501 date "2011-01-25" @default.
- W1782044501 modified "2023-10-12" @default.
- W1782044501 title "THE RADIATIVE EFFICIENCY OF ACCRETION FLOWS IN INDIVIDUAL ACTIVE GALACTIC NUCLEI" @default.
- W1782044501 cites W1839080075 @default.
- W1782044501 cites W1965336810 @default.
- W1782044501 cites W1966544164 @default.
- W1782044501 cites W1967423369 @default.
- W1782044501 cites W1968646907 @default.
- W1782044501 cites W1975080505 @default.
- W1782044501 cites W1975125108 @default.
- W1782044501 cites W1983612260 @default.
- W1782044501 cites W1986909595 @default.
- W1782044501 cites W1990046772 @default.
- W1782044501 cites W2002044265 @default.
- W1782044501 cites W2003953716 @default.
- W1782044501 cites W2005501750 @default.
- W1782044501 cites W2015968535 @default.
- W1782044501 cites W2017010109 @default.
- W1782044501 cites W2022431654 @default.
- W1782044501 cites W2023267266 @default.
- W1782044501 cites W2023347320 @default.
- W1782044501 cites W2024687558 @default.
- W1782044501 cites W2024909325 @default.
- W1782044501 cites W2026752831 @default.
- W1782044501 cites W2027321302 @default.
- W1782044501 cites W2028459640 @default.
- W1782044501 cites W2032280903 @default.
- W1782044501 cites W2037987126 @default.
- W1782044501 cites W2038177963 @default.
- W1782044501 cites W2040045454 @default.
- W1782044501 cites W2043384049 @default.
- W1782044501 cites W2043459207 @default.
- W1782044501 cites W2043661969 @default.
- W1782044501 cites W2044000841 @default.
- W1782044501 cites W2044168628 @default.
- W1782044501 cites W2044460462 @default.
- W1782044501 cites W2045886866 @default.
- W1782044501 cites W2049430551 @default.
- W1782044501 cites W2050575850 @default.
- W1782044501 cites W2052669181 @default.
- W1782044501 cites W2054925721 @default.
- W1782044501 cites W2059068804 @default.
- W1782044501 cites W2059767459 @default.
- W1782044501 cites W2064639428 @default.
- W1782044501 cites W2065346389 @default.
- W1782044501 cites W2066543711 @default.
- W1782044501 cites W2067319377 @default.
- W1782044501 cites W2074101920 @default.
- W1782044501 cites W2075161427 @default.
- W1782044501 cites W2080030193 @default.
- W1782044501 cites W2087652445 @default.
- W1782044501 cites W2088482582 @default.
- W1782044501 cites W2090903589 @default.
- W1782044501 cites W2102747712 @default.
- W1782044501 cites W2105041115 @default.
- W1782044501 cites W2106208039 @default.
- W1782044501 cites W2119836155 @default.
- W1782044501 cites W2123023495 @default.
- W1782044501 cites W2123139451 @default.
- W1782044501 cites W2124219338 @default.
- W1782044501 cites W2127984363 @default.
- W1782044501 cites W2135311876 @default.
- W1782044501 cites W2135894620 @default.
- W1782044501 cites W2136076204 @default.
- W1782044501 cites W2140757445 @default.
- W1782044501 cites W2142220445 @default.
- W1782044501 cites W2147781660 @default.
- W1782044501 cites W2147925360 @default.
- W1782044501 cites W2163792773 @default.
- W1782044501 cites W2169224160 @default.
- W1782044501 cites W2172119401 @default.
- W1782044501 cites W3098111942 @default.
- W1782044501 cites W3098575376 @default.
- W1782044501 cites W3100079191 @default.
- W1782044501 cites W3100231503 @default.
- W1782044501 cites W3100321658 @default.
- W1782044501 cites W3100679294 @default.
- W1782044501 cites W3100942922 @default.
- W1782044501 cites W3101187446 @default.
- W1782044501 cites W3101550526 @default.
- W1782044501 cites W3102259018 @default.
- W1782044501 cites W3102374037 @default.
- W1782044501 cites W3103020289 @default.
- W1782044501 cites W3103235503 @default.
- W1782044501 cites W3103470899 @default.
- W1782044501 cites W3103594376 @default.
- W1782044501 cites W3103687308 @default.
- W1782044501 cites W3103732414 @default.
- W1782044501 cites W3104181489 @default.
- W1782044501 cites W3104754302 @default.
- W1782044501 cites W3104895996 @default.
- W1782044501 cites W3105089311 @default.
- W1782044501 cites W3105281310 @default.
- W1782044501 cites W3121790835 @default.