BLR size in Realistic FRADO Model: The role of shielding effect

Abstract

The effective size of Broad Line Region (BLR), so-called the BLR radius, in galaxies with active galactic nuclei (AGN) scales with the source luminosity. Therefore by determining this location either observationally through reverberation mapping or theoretically, one can use AGNs as an interesting laboratory to test cosmological models. In this article we focus on the theoretical side of BLR based on the Failed Radiatively Accelerated Dusty Outflow (FRADO) model. By simulating the dynamics of matter in BLR through a realistic model of radiation of accretion disk (AD) including the shielding effect, as well as incorporating the proper values of dust opacities, we investigate how the radial extension and geometrical height of the BLR depends on the Eddington ratio [and blackhole mass], and modeling of shielding effect. We show that assuming a range of Eddington ratios and shielding we are able to explain the measured time-delays in a sample of reverberation-measured AGNs.

12 pages, 3 figures, accepted for publication in Journal of Frontiers in Astronomy and Space Sciences

References in corpus (12)

• A Catalog of Quasar Properties from SDSS DR7
• Spitzer Quasar and ULIRG Evolution Study (QUEST): II. The Spectral Energy Distributions of Palomar-Green Quasars
• Supermassive Black Holes with High Accretion Rates in Active Galactic Nuclei. IV. H$\beta$ Time Lags and Implications for Super-Eddington Accretion
• Broad-line Balmer Decrements in Blue Active Galactic Nuclei
• Dust inflated accretion disc as the origin of the Broad Line Region in Active Galactic Nuclei
• A Systematic Analysis of Fe II Emission in Quasars: Evidence for Inflow to the Central Black Hole
• Failed radiatively Accelerated Dusty Outflow model of the Broad Line Region in Active Galactic Nuclei. I. Analytical solution
• Star formation in accretion discs : from the Galactic Center to Active Galactic Nuclei
• Full SED fitting with the KOSMA-τ PDR code - I. Dust modelling
• The dust origin of the Broad Line Region and the model consequences for AGN unification scheme
• Test of the Formation mechanism of the Broad Line Region in Active Galactic Nuclei
• The Seoul National University AGN monitoring project. II. BLR size and black hole mass of two AGNs

Cited by in corpus (5)

• Radiation pressure on dust explains the Low Ionized Broad Emission Lines in Active Galactic Nuclei
• Dust-driven wind as a model of Broad Absorption Line quasars
• Dusty plasma in active galactic nuclei
• The Wind Dynamics of Super-Eddington Sources in FRADO
• Non-thermal emission from fall-back clouds in the Broad-Line Region of Active Galactic Nuclei