We discuss the relationship between a standard Shakura & Sunyaev (1973) accretion disk model and the Big Blue Bump (BBB) observed in Type 1 AGN, and propose a new method to estimate black hole masses. We apply this method to a sample of 23 radio-loud narrow-line Seyfert 1 (RL-NLS1) galaxies, using data from WISE (Wide-field Infrared Survey Explorer), SDSS (Sloan Digital Sky Survey) and GALEX. Our black hole mass estimates are at least a factor $\sim$6 above previous results based on single epoch virial methods, while the Eddington ratios are correspondingly lower. Hence, the black hole masses of RL-NLS1 galaxies are typically above $10^8 M_{\sun}$, in agreement with the typical black hole mass of blazars

Calderone, G., Ghisellini, G., Colpi, M., Dotti, M. (2013). Black hole mass estimate for a sample of radio-loud narrow-line Seyfert 1 galaxies. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 431(1), 210-239 [10.1093/mnras/stt157].

Black hole mass estimate for a sample of radio-loud narrow-line Seyfert 1 galaxies

CALDERONE, GIORGIO;COLPI, MONICA;DOTTI, MASSIMO
2013

Abstract

We discuss the relationship between a standard Shakura & Sunyaev (1973) accretion disk model and the Big Blue Bump (BBB) observed in Type 1 AGN, and propose a new method to estimate black hole masses. We apply this method to a sample of 23 radio-loud narrow-line Seyfert 1 (RL-NLS1) galaxies, using data from WISE (Wide-field Infrared Survey Explorer), SDSS (Sloan Digital Sky Survey) and GALEX. Our black hole mass estimates are at least a factor $\sim$6 above previous results based on single epoch virial methods, while the Eddington ratios are correspondingly lower. Hence, the black hole masses of RL-NLS1 galaxies are typically above $10^8 M_{\sun}$, in agreement with the typical black hole mass of blazars
Articolo in rivista - Articolo scientifico
accretion discs, galaxies: jets, quasars: emission lines
English
mag-2013
431
1
210
239
none
Calderone, G., Ghisellini, G., Colpi, M., Dotti, M. (2013). Black hole mass estimate for a sample of radio-loud narrow-line Seyfert 1 galaxies. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 431(1), 210-239 [10.1093/mnras/stt157].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/46206
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