Modelling the AGN broad line region using single-epoch spectra II. Nearby AGN

Abstract

The structure of the broad line region (BLR) is an essential ingredient in the determination of active galactic nuclei (AGN) virial black hole masses, which in turn are important to study the role of black holes in galaxy evolution. Constraints on the BLR geometry and dynamics can be obtained from velocity-resolved studies using reverberation mapping data (i.e. monitoring data). However, monitoring data are observationally expensive and only available for a limited sample of AGN, mostly confined to the local Universe. Here we explore a new version of a Bayesian inference, physical model of the BLR which uses an individual spectrum and prior information on the BLR size from the radius-luminosity relation, to model the AGN BLR geometry and dynamics. We apply our model to a sample of 11 AGN, which have been previously modelled using monitoring data. Our single-epoch BLR model is able to constrain some of the BLR parameters with inferred parameter values that agree within the uncertainties with those determined from the modelling of monitoring data. We find that our model is able to derive stronger constraints on the BLR for AGN with broad emission lines that qualitatively have more substructure and more asymmetry, presumably as they contain more information to constrain the physical model. The performance of this model makes it a practical and cost-effective tool to determine some of the BLR properties of a large sample of low and high redshift AGN, for which monitoring data are not available.

arXiv commentAccepted for publication in MNRAS

References in corpus (57)

• Reverberation Measurements for 17 Quasars and the Size-Mass-Luminosity Relations in Active Galactic Nuclei
• Central Masses and Broad-Line Region Sizes of Active Galactic Nuclei. II. A Homogeneous Analysis of a Large Reverberation-Mapping Database
• Determining Central Black Hole Masses in Distant Active Galaxies and Quasars. II. Improved Optical and UV Scaling Relationships
• Astrophysics Source Code Library
• An 800-million-solar-mass black hole in a significantly neutral Universe at redshift 7.5
• Dynamics of line-driven disk winds in Active Galactic Nuclei
• The Low-Luminosity End of the Radius-Luminosity Relationship for Active Galactic Nuclei
• Are the Variations in Quasar Optical Flux Driven by Thermal Fluctuations?
• Modeling the Time Variability of SDSS Stripe 82 Quasars as a Damped Random Walk
• Supermassive Black Holes in Active Galactic Nuclei. II. Calibration of the M-sigma Relationship for AGNs
• The AGN Obscuring Torus -- End of the "Doughnut" Paradigm?
• The Sloan Digital Sky Survey Quasar Catalog: Fourteenth Data Release
• The Lick AGN Monitoring Project: Broad-Line Region Radii and Black Hole Masses from Reverberation Mapping of Hbeta
• Determining Central Black Hole Masses in Distant Active Galaxies
• Mass Functions of the Active Black Holes in Distant Quasars from the Large Bright Quasar Survey, the Bright Quasar Survey, and the Color-Selected Sample of the SDSS Fall Equatorial Stripe
• Quantifying Quasar Variability As Part of a General Approach To Classifying Continuously Varying Sources
• Keplerian Motion of Broad-Line Region Gas as Evidence for Supermassive Black Holes in Active Galactic Nuclei
• The AGN Black Hole Mass Database
• Reverberation Mapping Measurements of Black Hole Masses in Six Local Seyfert Galaxies
• Locally Optimally Emitting Clouds and the Origin of Quasar Emission Lines
• Modeling reverberation mapping data II: dynamical modeling of the Lick AGN Monitoring Project 2008 dataset
• Double-Peaked Low-Ionization Emission Lines in Active Galactic Nuclei
• What the Optical Recombination Lines Can Tell Us About the Broad Line Regions of Active Galactic Nuclei
• Stellar Velocity Dispersion Measurements in High-Luminosity Quasar Hosts and Implications for the AGN Black Hole Mass Scale
• Reverberation Mapping Results for Five Seyfert 1 Galaxies
• Analysis of optical Fe II emission in a sample of AGN spectra
• Early Growth and Efficient Accretion of Massive Black Holes at High Redshift
• The Lick AGN Monitoring Project 2011: Spectroscopic Campaign and Emission-Line Light Curves
• The Structure of the Broad Line Region in AGN: I. Reconstructed Velocity-Delay Maps
• Gemini GNIRS near-infrared spectroscopy of 50 quasars at z>~5.7
• Accretion disk wind in the AGN broad-line region: Spectroscopically resolved line profile variations in Mrk110
• Accretion Rate and the Physical Nature of Unobscured Active Galaxies
• Geometric and Dynamical Models of Reverberation Mapping Data
• The Structure of the Broad-Line Region In Active Galactic Nuclei. II. Dynamical Modeling of Data from the AGN10 Reverberation Mapping Campaign
• Space Telescope and Optical Reverberation Mapping Project. V. Optical Spectroscopic Campaign and Emission-Line Analysis for NGC 5548
• Modeling reverberation mapping data I: improved geometric and dynamical models and comparison with cross-correlation results
• The Lick AGN Monitoring Project: Velocity-Delay Maps from the Maximum-Entropy Method for Arp 151
• The broad emission-line region: the confluence of the outer accretion disc with the inner edge of the dusty torus
• The XMM-Newton long look of NGC 1365: uncovering of the obscured X-ray source
• Supermassive Black Holes with High Accretion Rates in Active Galactic Nuclei. VI. Velocity-resolved Reverberation Mapping of H$\beta$ Line
• Double-peaked profiles: ubiquitous signatures of disks in the Broad Emission Lines of Active Galactic Nuclei
• The Lick AGN Monitoring Project 2011: Reverberation Mapping of Markarian 50
• A Bayesian Approach to Estimate the Size and Structure of the Broad-line Region in Active Galactic Nuclei Using Reverberation Mapping Data
• The Lick AGN Monitoring Project 2011: Dynamical Modeling of the Broad-Line Region
• The Lick AGN Monitoring Project 2011: Dynamical Modeling of the Broad Line Region in Mrk 50
• The shape of broad-line profiles in AGN
• Rest-frame Optical Spectra and Black Hole Masses of 3<z<6 Quasars
• The Mass of the Black Hole in Arp 151 from Bayesian Modeling of Reverberation Mapping Data
• Virial Black Hole Mass Estimates for 280,000 AGNs from the SDSS Broad-Band Photometry and Single Epoch Spectra
• Photoionized HBeta Emission in NGC 5548: It Breathes!
• CIV Black Hole Mass Measurements with the Australian Dark Energy Survey (OzDES)
• Super- and sub-Eddington accreting massive black holes: A comparison of slim and thin accretion discs through study of the spectral energy distribution
• Quasar Rain: the Broad Emission Line Region as Condensations in the Warm Accretion Disk Wind
• Stability of the Broad Line Region Geometry and Dynamics in Arp 151 Over Seven Years
• Is the Broad-Line Region Clumped or Smooth? Constraints from the H alpha Profile in NGC 4395, the Least Luminous Seyfert 1 Galaxy
• Modelling the AGN broad line region using single-epoch spectra I. The test case of Arp 151
• Spectral Energy Distribution Variations of Nearby Seyfert Galaxies During AGN Watch Monitoring Programs

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