Black Hole Masses and Eddington Ratios at 0.3<z<4

Abstract

We study the distribution of Eddington luminosity ratios, L_bol/L_edd, of active galactic nuclei (AGNs) discovered in the AGN and Galaxy Evolution Survey (AGES). We combine H-beta, MgII, and CIV line widths with continuum luminosities to estimate black hole (BH) masses in 407 AGNs, covering the redshift range z~0.3-4 and the bolometric luminosity range L_bol~10^45-10^47 erg/s. The sample consists of X-ray or mid-infrared (24 micron) point sources with optical magnitude R<=21.5 mag and optical emission line spectra characteristic of AGNs. For the range of luminosity and redshift probed by AGES, the distribution of estimated Eddington ratios is well described as log-normal with a peak at L_bol/L_edd ~ 1/4 and a dispersion of 0.3 dex. Since additional sources of scatter are minimal, this dispersion must account for contributions from the scatter between estimated and true BH mass and the scatter between estimated and true bolometric luminosity. Therefore, we conclude that: (1) neither of these sources of error can contribute more than \~0.3 dex rms; and (2) the true Eddington ratios of optically luminous AGNs are even more sharply peaked. Because the mass estimation errors must be smaller than ~0.3 dex, we can also investigate the distribution of Eddington ratios at fixed BH mass. We show for the first time that the distribution of Eddington ratios at fixed BH mass is peaked, and that the dearth of AGNs at a factor ~10 below Eddington is real and not an artifact of sample selection. These results provide strong evidence that supermassive BHs gain most of their mass while radiating close to the Eddington limit, and they suggest that the fueling rates in luminous AGNs are ultimately determined by BH self-regulation of the accretion flow rather than galactic scale dynamical disturbances.

34 pages including 12 figures. Incorporates referee's comments. Accepted for publication in ApJ

References in corpus (14)

• 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
• Mid-Infrared Selection of Active Galaxies
• Present-Day Growth of Black Holes and Bulges: the SDSS Perspective
• The Relationship Between Luminosity and Broad-Line Region Size in Active Galactic Nuclei
• Supermassive Black Holes in Active Galactic Nuclei. II. Calibration of the M-sigma Relationship for AGNs
• The Radius-Luminosity Relationship for Active Galactic Nuclei: The Effect of Host-Galaxy Starlight on Luminosity Measurements
• Hectospec, the MMT's 300 Optical Fiber-Fed Spectrograph
• The 2dF-SDSS LRG and QSO Survey: The z<2.1 Quasar Luminosity Function from 5645 Quasars to g=21.85
• The IRAC Shallow Survey
• XBootes: An X-Ray Survey of the NDWFS Bootes Field - Paper I Overview and Initial Results
• Structure Function Analysis of Long Term Quasar Variability
• The XBootes Chandra Survey Paper II: The X-ray Source Catalog
• The Chandra XBootes Survey - III: Optical and Near-IR Counterparts

Cited by in corpus (328)

• Observational Evidence of AGN Feedback
• A Cosmological Framework for the Co-Evolution of Quasars, Supermassive Black Holes, and Elliptical Galaxies: I. Galaxy Mergers & Quasar Activity
• A Catalog of Quasar Properties from SDSS DR7
• The Co-Evolution of Galaxies and Supermassive Black Holes: Insights from Surveys of the Contemporary Universe
• A Semi-Analytic Model for the Co-evolution of Galaxies, Black Holes, and Active Galactic Nuclei
• The Dark Energy Survey: more than dark energy - an overview
• Modeling the Time Variability of SDSS Stripe 82 Quasars as a Damped Random Walk
• On the fundamental dichotomy in the local radio-AGN population: accretion, evolution, and host galaxy properties
• Toward the Standard Population Synthesis Model of the X-Ray Background: Evolution of X-Ray Luminosity and Absorption Functions of Active Galactic Nuclei Including Compton-Thick Populations
• Intrinsic disc emission and the Soft X-ray Excess in AGN
• Can environmental effects spoil precision gravitational-wave astrophysics?
• What Drives the Growth of Black Holes?
• Biases in Virial Black Hole Masses: An SDSS Perspective
• Self-Consistent Models of the AGN and Black Hole Populations: Duty Cycles, Accretion Rates, and the Mean Radiative Efficiency
• Host galaxies, clustering, Eddington ratios, and evolution of radio, X-ray, and infrared-selected AGNs
• Piecing Together the X-ray Background: Bolometric Corrections for Active Galactic Nuclei
• Reverberation Mapping of High-Luminosity Quasars: First Results
• Cosmological simulations of black hole growth: AGN luminosities and downsizing
• A Global Three Dimensional Radiation Magneto-hydrodynamic Simulation of Super-Eddington Accretion Disks
• An expanded M_bh-sigma diagram, and a new calibration of active galactic nuclei masses
• Bolometric luminosities and Eddington ratios of X-ray selected Active Galactic Nuclei in the XMM-COSMOS survey
• 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
• Clustering of High Redshift ($z\ge 2.9$) Quasars from the Sloan Digital Sky Survey
• The Quasar Accretion Disk Size - Black Hole Mass Relation
• The Quasar Accretion Disk Size -- Black Hole Mass Relation
• On the cosmic evolution of the scaling relations between black holes and their host galaxies: Broad Line AGN in the zCOSMOS survey
• Reverberation Mapping Measurements of Black Hole Masses in Six Local Seyfert Galaxies
• An Alternative Approach To Measuring Reverberation Lags in Active Galactic Nuclei
• Eddington-limited accretion and the black hole mass function at redshift 6
• The Radiative Efficiency of Accretion Flows in Individual AGN
• The Population of Viscosity- and Gravitational Wave-Driven Supermassive Black Hole Binaries Among Luminous AGN
• A synthesis model for AGN evolution: supermassive black holes growth and feedback modes
• Feast and Famine: Regulation of Black Hole Growth in Low Redshift Galaxies
• PRIMUS: The dependence of AGN accretion on host stellar mass and color
• Formation of z ~ 6 quasars from hierarchical galaxy mergers
• The Mass Function of Active Black Holes in the Local Universe
• Comparing Single-Epoch Virial Black Hole Mass Estimators for Luminous Quasars
• The Hard X-ray Spectrum as a Probe for Black-Hole Growth in Radio-Quiet Active Galactic Nuclei
• The cosmic evolution of massive black holes in the Horizon-AGN simulation
• Accreting SMBHs in the COSMOS field and the connection to their host galaxies
• Clustering of Low-Redshift (z <= 2.2) Quasars from the Sloan Digital Sky Survey
• Gemini Near-infrared Spectroscopy of Luminous z~6 Quasars: Chemical Abundances, Black Hole Masses, and MgII Absorption
• Quasar Clustering from SDSS DR5: Dependences on Physical Properties
• Super-Eddington Accretion Disks around Supermassive black Holes
• A log-quadratic relation for predicting supermassive black hole masses from the host bulge Sersic index
• Accretion and star formation rates in low redshift type-II active galactic nuclei
• Estimating Black Hole Masses in Active Galactic Nuclei Using the MgII 2800 Emission Line
• Reverberation Mapping Results for Five Seyfert 1 Galaxies
• Sizes and Temperature Profiles of Quasar Accretion Disks from Chromatic Microlensing
• A Reverberation-Based Mass for the Central Black Hole in NGC 4151
• The Spitzer Deep, Wide-Field Survey
• Accretion-Driven Evolution of Black Holes: Eddington Ratios, Duty Cycles, and Active Galaxy Fractions
• The First Hyper-Luminous Infrared Galaxy Discovered by WISE
• X-Ray and Optical Flux Ratio Anomalies in Quadruply Lensed Quasars: I. Zooming in on Quasar Emission Regions
• The bolometric luminosity of type 2 AGN from extinction-corrected [OIII]: no evidence for Eddington-limited sources
• The LABOCA Survey of the Extended Chandra Deep Field South: Clustering of submillimetre galaxies
• Half of the Most Luminous Quasars May Be Obscured: Investigating the Nature of WISE-Selected Hot, Dust-Obscured Galaxies
• Weighing the Black Holes in z~2 Submillimeter-Emitting Galaxies Hosting Active Galactic Nuclei
• Quasar Luminosity Functions from Joint Evolution of Black Holes and Host Galaxies
• The Radius-Luminosity Relationship Depends on Optical Spectra in Active Galactic Nuclei
• AGES: The AGN and Galaxy Evolution Survey
• The Demographics of Broad Line Quasars in the Mass-Luminosity Plane II. Black Hole Mass and Eddington Ratio Functions
• Constraints on Black Hole Growth, Quasar Lifetimes, and Eddington Ratio Distributions from the SDSS Broad Line Quasar Black Hole Mass Function
• A Theoretical Interpretation of the Black Hole Fundamental Plane
• Comparing and calibrating black hole mass estimators for distant active galactic nuclei
• Black Holes in Pseudobulges and Spheroidals: A Change in the Black Hole-Bulge Scaling Relations at Low Mass
• Quasars Are Not Light-Bulbs: Testing Models of Quasar Lifetimes with the Observed Eddington Ratio Distribution
• Space Telescope and Optical Reverberation Mapping Project. I. Ultraviolet Observations of the Seyfert 1 Galaxy NGC 5548 with the Cosmic Origins Spectrograph on Hubble Space Telescope
• The effect of radiation pressure on dusty absorbing gas around AGN
• Imprint of Accretion Disk-Induced Migration on Gravitational Waves from Extreme Mass Ratio Inspirals
• Faint high-redshift AGN in the Chandra Deep Field South: the evolution of the AGN luminosity function and black hole demography
• Gas driven massive black hole binaries: signatures in the nHz gravitational wave background
• A characteristic optical variability timescale in astrophysical accretion disks
• Accretion Rate and the Physical Nature of Unobscured Active Galaxies
• Black-Hole Mass and Growth Rate at High Redshift
• Dark matter haloes determine the masses of supermassive black holes
• Supermassive Black Holes from Ultra-Strongly Self-Interacting Dark Matter
• The COSMOS AGN Spectroscopic Survey I: XMM Counterparts
• Systematic Uncertainties in Black Hole Masses Determined from Single Epoch Spectra
• The Microlensing Properties of a Sample of 87 Lensed Quasars
• Low redshift AGN in the Hamburg/ESO Survey: II. The active black hole mass function and the distribution function of Eddington ratios
• On the variability of quasars: a link between Eddington ratio and optical variability?
• Multimessenger astronomy with pulsar timing and X-ray observations of massive black hole binaries
• Type 1 low z AGN. I. Emission properties
• Active Galactic Nuclei Feedback in an Elliptical Galaxy with the Most Updated AGN Physics (I): Low-angular Momentum Case
• Low-Luminosity Active Galactic Nuclei: Are They UV-Faint and Radio Loud?
• The Lick AGN Monitoring Project: Recalibrating Single-Epoch Virial Black Hole Mass Estimates
• Accretion disks around binary black holes of unequal mass: GRMHD simulations near decoupling
• No significant evolution of relations between Black hole mass and Galaxy total stellar mass up to z~2.5
• A Revised Broad-Line Region Radius and Black Hole Mass for the Narrow-Line Seyfert 1 NGC 4051
• Probing the Evolution of IR Properties of z~6 Quasars: Spitzer Observations
• Origin of the anti-hierarchical growth of black holes
• Mass Functions of the Active Black Holes in Distant Quasars from the Sloan Digital Sky Survey Data Release 3
• The Demographics of Broad-Line Quasars in the Mass-Luminosity Plane. I. Testing FWHM-Based Virial Black Hole Masses
• Quasistars and the cosmic evolution of massive black holes
• Quasars Probing Quasars III: New Clues to Feedback, Quenching, and the Physics of Massive Galaxy Formation
• CIV Emission Line Properties and Systematic Trends in Quasar Black Hole Mass Estimates
• Observational Evidence for the Co-evolution of Galaxy Mergers, Quasars, and the Blue/Red Galaxy Transition
• The Sloan Digital Sky Survey Reverberation Mapping Project: Estimating Masses of Black Holes in Quasars with Single-Epoch Spectroscopy
• Clustering of obscured and unobscured quasars in the Bootes field: Placing rapidly growing black holes in the cosmic web
• AMUSE-Virgo II. Down-sizing in black hole accretion
• Radiative pressure feedback by a quasar in a galactic bulge
• Rotating Accretion Flows: From Infinity to the Black Hole
• AMUSE-Virgo I. Super-massive black holes in low-mass spheroids
• Are Outflows Biasing Single-Epoch CIV Black Hole Mass Estimates?
• A Comparison between Semi-Analytic Model Predictions for the CANDELS Survey
• The Demography of Super-Massive Black Holes: Growing Monsters at the Heart of Galaxies
• Microlensing Makes Lensed Quasar Time Delays Significantly Time Variable
• The cosmic growth of the active black hole population at 1<z<2 in zCOSMOS, VVDS and SDSS
• The Co-Formation of Spheroids and Quasars Traced in their Clustering
• On the radiative efficiencies, Eddington ratios, and duty cycles of luminous high-redshift quasars
• Rapidly growing black holes and host galaxies in the distant Universe from the Herschel Radio Galaxy Evolution Project
• Modeling the cosmological co-evolution of supermassive black holes and galaxies: II. The clustering of quasars and their dark environment
• Quasar Selection Based on Photometric Variability
• A Simple Model for Quasar Demographics
• The Quasar Mass-Luminosity Plane I: A Sub-Eddington Limit for Quasars
• Observational Constraints on the Dependence of Radio-Quiet Quasar X-ray Emission on Black Hole Mass and Accretion Rate
• The Rewards of Patience: An 822 Day Time Delay in the Gravitational Lens SDSS J1004+4112
• Flickering AGN can explain the strong circumgalactic O VI observed by COS-Halos
• Redshift Evolution in Black Hole-Bulge Relations: Testing CIV-based Black Hole Masses
• QSO Selection Algorithm Using Time Variability and Machine Learning: Selection of 1,620 QSO Candidates from MACHO LMC Database
• The correlations between optical variability and physical parameters of quasars in SDSS Stripe 82
• Supermassive Black Holes in the Hierarchical Universe: A General Framework and Observational Tests
• Quasar Accretion Disk Sizes From Continuum Reverberation Mapping From the Dark Energy Survey
• Probing the Balance of AGN and Star-Forming Activity in the Local Universe with ChaMP
• The Formation of the First Massive Black Holes
• Torque-Limited Growth of Massive Black Holes in Galaxies Across Cosmic Time
• Microlensing of Quasar Broad Emission Lines: Constraints on Broad Line Region Size
• Is Mg II 2800 a Reliable Virial Broadening Estimator for Quasars?
• The Evolution of the M_BH-sigma relation Inferred from the Age Distribution of Local Early-Type Galaxies and AGN Evolution
• Black Hole Mass Scaling Relations for Spiral Galaxies. II. $M_{\mathrm{BH}}$-$M_{\ast ,\mathrm{tot}}$ and $M_{\mathrm{BH}}$-$M_{\ast ,\mathrm{disk}}$
• Triggering Active Galactic Nuclei in Hierarchical Galaxy Formation: Disk instability vs. Interactions
• Black hole accretion and host galaxies of obscured quasars in XMM-COSMOS
• Gas pile-up, gap overflow, and Type 1.5 migration in circumbinary disks: application to supermassive black hole binaries
• Galaxy formation in semi-analytic models and cosmological hydrodynamic zoom simulations
• Evolution in the Black Hole - Galaxy Scaling Relations and the Duty Cycle of Nuclear Activity in Star-Forming Galaxies
• A novel variability-based method for quasar selection: evidence for a rest frame ~54 day characteristic timescale
• Electromagnetic counterparts of supermassive black hole binaries resolved by pulsar timing arrays
• Chemical Evolution of High-Redshift Radio Galaxies
• Massive black hole seeds born via direct gas collapse in galaxy mergers: their properties, statistics and environment
• Microlensing Evidence That A Type 1 Quasar Is Viewed Face On
• Constraints on the correlation between QSO luminosity and host halo mass from high-redshift quasar clustering
• Quasar Black Hole Mass Estimates in the Era of Time Domain Astronomy
• Supermassive black holes in cosmological simulations II: the AGN population and predictions for upcoming X-ray missions
• Rapid Coeval Black Hole and Host Galaxy Growth in MRC 1138-262: The Hungry Spider
• Mass Functions of Supermassive Black Holes Across Cosmic Time
• Low accretion rates at the AGN cosmic downsizing epoch
• Are Most Low-Luminosity AGN Really Obscured?
• Why Are AGN and Host Galaxies Misaligned?
• Revealing the Structure of an Accretion Disk Through Energy Dependent X-ray Microlensing
• Toward precise constraints on growth of massive black holes
• The Lick AGN Monitoring Project: Alternate Routes to a Broad-line Region Radius
• A Comparison of X-ray and Mid-Infrared Selection of Obscured AGN
• The effect of stellar feedback and quasar winds on the AGN population
• The Intrinsic Eddington Ratio Distribution of Active Galactic Nuclei in Star-forming Galaxies from the Sloan Digital Sky Survey
• X-ray emission from high-redshift miniquasars: self-regulating the population of massive black holes through global warming
• Neutron Star Mergers in AGN Accretion Disks: Cocoon and Ejecta Shock Breakouts
• The Nature of Optically Dull Active Galactic Nuclei in COSMOS
• AGN evolution from a galaxy evolution viewpoint
• Mid-Infrared Variability from the Spitzer Deep, Wide-Field Survey
• BASS XXXVII: The role of radiative feedback in the growth and obscuration properties of nearby supermassive black holes
• The low frequency of dual AGNs versus the high merger rate of galaxies: A phenomenological model
• Double quasars: probes of black hole scaling relationships and merger scenarios
• Simulations of the OzDES AGN Reverberation Mapping Project
• A Strong X-Ray Flux Ratio Anomaly in the Quadruply Lensed Quasar PG 1115+080
• An Improved Method for Using MgII to Estimate Black Hole Masses in Active Galactic Nuclei
• PRIMUS: An observationally motivated model to connect the evolution of the AGN and galaxy populations out to z~1
• The Chandra Deep Fields: Lifting the Veil on Distant Active Galactic Nuclei and X-Ray Emitting Galaxies
• AGN feedback in an isolated elliptical galaxy: the effect of strong radiative feedback in the kinetic mode
• The Growth of Black Holes: Insights From Obscured Active Galaxies
• Cosmological Evolution of Supermassive Black Holes. II. Evidence for Downsizing of Spin Evolution
• Recurring flares from supermassive black hole binaries: implications for tidal disruption candidates and OJ 287
• Black Hole Masses of Intermediate-Redshift Quasars: Near Infrared Spectroscopy
• Determining Quasar Black Hole Mass Functions from their Broad Emission Lines: Application to the Bright Quasar Survey
• The fraction of AGN in major merger galaxies and its luminosity dependence
• Environmental dependence of AGN activity. I.: the effects of host galaxy
• Two dimensional numerical simulations of Supercritical Accretion Flows revisited
• Photometric Reverberation Mapping of the Broad Emission Line Region in Quasars
• Observational constraints on the co-evolution of supermassive black holes and galaxies
• Radiative Transfer and Radiative driving of Outflows in AGN and Starbursts
• The journey of QSO haloes from z=6 to the present
• A Candidate Dual AGN at z=1.175
• The Baldwin effect in the narrow emission lines of AGNs
• Black Hole Demography: From scaling relations to models
• Probing high-redshift quasars with ALMA. I. Expected observables and potential number of sources
• A study of the X-rayed outflow of APM 08279+5255 through photoionization codes
• Host galaxies of bright high redshift quasars: Luminosities and colours
• Cosmological evolution of massive black holes: effects of Eddington ratio distribution and quasar lifetime
• Black Hole Mass Estimates and Rapid Growth of Supermassive Black Holes in Luminous $z\sim$ 3.5 Quasars
• Eddington ratio Distribution of X-ray selected broad-line AGNs at 1.0<z<2.2
• The black holes of radio galaxies during the "Quasar Era": Masses, accretion rates, and evolutionary stage
• Quasar Rain: the Broad Emission Line Region as Condensations in the Warm Accretion Disk Wind
• Towards a comprehensive picture of powerful quasars, their host galaxies and quasar winds at z ~ 0.5
• zBootes : z-band Photometry in the NOAO Deep Wide-Field Survey Bootes Field
• Active Galactic Nuclei Feedback in an Elliptical Galaxy with the Most Updated AGN Physics (II): High-Angular Momentum Case
• AGN and their host galaxies in the local Universe: two mass independent Eddington ratio distribution functions characterize black hole growth
• GTC Spectra of z ~ 2.3 Quasars: Comparison with Local Luminosity Analogues
• A Census of Broad-Line Active Galactic Nuclei in Nearby Galaxies: Coeval Star Formation and Rapid Black Hole Growth
• An Energy Inventory of Tidal Disruption Events
• The spatial relation between the event horizon and trapping horizon
• pAGN: the one-stop solution for AGN disc modeling
• The mass of the black hole in RE J1034+396
• Evidence for Short $\sim 1$ Myr Lifetimes from the He II Proximity Zones of $z\sim 4$ Quasars
• Supermassive black holes with high accretion rates in active galactic nuclei: X. Optical variability characteristics
• Thermonuclear Explosions and Accretion-induced Collapses of White Dwarfs in Active Galactic Nucleus Accretion Disks
• On the Dynamics of Supermassive Black Holes in Gas-Rich, Star-Forming Galaxies: the Case for Nuclear Star Cluster Coevolution
• The slicing dependence of non-spherically symmetric quasi-local horizons in Vaidya Spacetimes
• Morphologies of Radio, X-Ray, and Mid-Infrared Selected AGN
• The Close AGN Reference Survey (CARS): IFU survey data and the BH mass dependence of long-term AGN variability
• Obscured GOODS AGN and Their Host Galaxies at z < 1.25: The Slow Black Hole Growth Phase
• Eddington ratios of faint AGN at intermediate redshift: Evidence for a population of half-starved black holes
• The Large Sky Area Multi-Object Fiber Spectroscopic Telescope Quasar Survey: Quasar Properties from First Data Release
• Metals in the circumgalactic medium are out of ionization equilibrium due to fluctuating active galactic nuclei
• A Refined QSO Selection Method Using Diagnostics Tests: 663 QSO Candidates in the LMC
• Spectral Evolution in High Redshift Quasars from the Final BOSS Sample
• The correlation of outflow kinematics with star formation rate -- Gas outflows in AGNs. VI
• Correlations of the IR Luminosity and Eddington Ratio with a Hard X-ray Selected Sample of AGN
• The High-z Quasar Hubble Diagram
• Disentangling star formation and AGN activity in powerful infrared luminous radio galaxies at 1<z<4
• Reconciling the Quasar Microlensing Disc Size Problem with a Wind Model of Active Galactic Nucleus
• Witnessing the Birth of a Quasar
• A New Microlensing Event in the Doubly-Imaged Quasar Q0957+561
• Constraints on black hole duty cycles and the black hole-halo relation from SDSS quasar clustering
• New Method for Exploring Super-Eddington AGNs by Near-infrared Observations
• A forward modelling approach to AGN variability -- Method description and early applications
• Ultraviolet Emission-Line Correlations in Hubble/COS Spectra of Active Galactic Nuclei: Single-Epoch Black Hole Masses
• Radiation pressure, absorption and AGN feedback in the Chandra Deep Fields
• Radiation driven outflow in active galactic nuclei: the feedback effects of scattered and reprocessed photons
• Constraining the quasar population with the broad-line width distribution
• A Correlation Between the Ionization State of the Inner Accretion Disk and the Eddington Ratio of Active Galactic Nuclei
• The relative growth of Optical and Radio Quasars in SDSS
• Radiation Pressure Supported AGN Tori with Hard X-Ray and Stellar Heating
• J004457+4123 (Sharov 21): not a remarkable nova in M31 but a background quasar with a spectacular UV flare
• The high efficiency jets magnetically accelerated from a thin disk in powerful lobe-dominated FRII radio galaxies
• Electromagnetic signatures of supermassive black hole binaries resolved by PTAs
• Driving the Growth of the Earliest Supermassive Black Holes with Major Mergers of Host Galaxies
• Empirical Constraints on the Evolution of the Relationship between Black Hole and Galaxy Mass: Scatter Matters
• Where are Compton-thick radio galaxies? A hard X-ray view of three candidates
• Gravitational-wave background from compact objects embedded in AGN accretion disks
• The Cosmic History of Black Hole Growth from Deep Multiwavelength Surveys
• Evidence for Merger-Driven Activity in the Clustering of High Redshift Quasars
• Biases in the Quasar Mass-Luminosity Plane
• Reconstructing the Cosmic Evolution of Quasars from the Age Distribution of Local Early-Type Galaxies
• Growth of Early Supermassive Black Holes and the High-Redshift Eddington Ratio Distribution
• The UV--mid-IR Spectral Energy Distribution of a z=1.7 Quasar Host Galaxy
• Do we know the mass of a black hole? Mass of some cosmological black hole models
• Gravitational waves from supermassive black hole binaries in ultra-luminous infrared galaxies
• SALT long-slit spectroscopy of LBQS 2113-4538: variability of the Mg II and Fe II component
• From Thin to Thick: The Impact of X-ray Irradiation on Accretion Disks in AGN
• A Thirty-Four Billion Solar Mass Black Hole in SMSS J2157-3602, the Most Luminous Known Quasar
• Joint NuSTAR and Chandra analysis of the obscured quasar in IC 2497 - Hanny's Voorwerp system
• Cosmological simulations of quasar fueling to sub-parsec scales using Lagrangian hyper-refinement
• The Quasar Mass-Luminosity Plane II: High Mass Turnoff Evolution and a Synchronization Puzzle
• Do quasar broad-line velocity widths add any information to virial black hole mass estimates?
• Limits on luminosity and mass accretion rate of a radiation pressure dominated accretion disc
• Environmental effects on the growth of super massive black holes and AGN feedback
• Escape, capture, and levitation of matter in Eddington outbursts
• Modification of the 21-cm power spectrum by X-rays during the epoch of reionisation
• The Race Between Stars and Quasars in Reionizing Cosmic Hydrogen
• Reliable Identification of Binary Supermassive Black Holes from Rubin Observatory Time-Domain Monitoring
• The SMBH mass versus M_G sigma^2 relation: A comparison between real data and numerical models
• Virilization of the Broad Line Region in Active Galactic Nuclei - connection between shifts and widths of broad emission lines
• Unveiling the hosts of parsec-scale massive black hole binaries: morphology and electromagnetic signatures
• A supercritical accretion disk with radiation-driven outflows
• Cosmological growth and feedback from supermassive black holes
• Revisiting the Extreme Clustering of $z\approx 4$ Quasars with Large Volume Cosmological Simulations
• Resolving the dynamical mass of a z~1.3 QSO host galaxy using SINFONI and Laser Guide Star assisted Adaptive Optics
• On possible proxies of AGN light curves cadence selection in future time domain surveys
• Mid-Infrared Selected Quasars I: Virial Black Hole Mass and Eddington Ratios
• The effect of macromodel uncertainties on microlensing modelling of lensed quasars
• Measuring the luminosity and virial black hole mass dependence of quasar-galaxy clustering at z ~ 0.8
• Modification of the 21-cm power spectrum by quasars during the epoch of reionisation
• Probing the disk-corona systems and broad line regions of changing-look quasars with X-ray and optical observations
• The Importance of Broad Emission-Line Widths in Single Epoch Black Hole Mass Estimates
• Intrinsic and observed dual AGN fractions from major mergers
• Ionized Gas Outflows in Low Excitation Radio Galaxies Are Radiation Driven
• Hubble Constant from LSST Strong lens time delays with microlensing systematics
• Hidden AGNs in Early-Type Galaxies
• Reverberation Mapping of PG 0934+013 with the Southern African Large Telescope
• Episodic activities of supermassive black holes at redshift $z\le 2$: driven by mergers?
• Rest-frame UV single-epoch black hole mass estimates of low-luminosity AGN at intermediate redshifts
• X-ray illuminated accretion discs and quasar microlensing disc sizes
• Does the Hubble Redshift Flip Photons and Gravitons?
• Modeling quasar accretion disc temperature profiles
• Radiation-driven outflows in AGNs: Revisiting feedback effects of scattered and reprocessed photons
• Probing compact dark matter objects with microlensing in gravitationally lensed quasars
• Accretion of Dissipative Dark Matter onto Active Galactic Nuclei
• Alignments Of Black Holes With Their Warped Accretion Disks And Episodic Lifetimes Of Active Galactic Nuclei
• Cosmic Feedback from AGN
• On the Evolution of High-Redshift Active Galactic Nuclei
• The interaction of the active nucleus with the host galaxy interstellar medium
• Active Galaxies and the Study of Black Hole Demographics
• Stellar transits in active galactic nuclei
• Refining the mass estimate for the intermediate-mass black hole candidate in NGC 3319
• An Eddington ratio-driven origin for the ${\mathrm{L}}_{\mathrm{X}}-{\mathrm{M}}_{\ast }$ relation in quiescent and star forming active galaxies
• Characterising SMSS J2157--3602, the most luminous known quasar, with accretion disc models
• A Physical Model for the Quasar Luminosity Function Evolution between Cosmic Dawn and High Noon
• Polarized radiative transfer modeling of warped and clumpy dusty tori
• Growth of massive black holes at their late stage
• Rapidly spinning massive black holes in active galactic nuclei: evidence from the black hole mass function
• The Quasar Mass-Luminosity Plane III: Smaller Errors on Virial Mass Estimates
• The Shape of the Cosmic X-ray Background: Nuclear Starburst Discs and the Redshift Evolution of AGN Obscuration
• Mass-dependent evolution of the relation between supermassive black hole mass and host spheroid mass since z ~ 1
• Multi-scale simulations of black hole accretion in barred galaxies: Self-gravitating disk models
• Observable Signatures of EMRI Black Hole Binaries Embedded in Thin Accretion Disks
• The Wind Dynamics of Super-Eddington Sources in FRADO
• Detecting quasars at very high redshift with next generation X-ray telescopes
• Search for extended Lyman-$\alpha$ emission around 9k quasars at z=2-3
• SDSS-IV MaNGA: Identification and Multiwavelength Properties of Type-1 AGN in the DR15 sample
• Quasar Structure Emerges from the Three Forms of Radiation Pressure
• X-ray Eclipses of Active Galactic Nuclei
• Understanding the AGN-Host Connection in Broad Mgii Emission Selected AGN-Host Hybrid Qausars
• Spectral Energy Distribution Variations of Nearby Seyfert Galaxies During AGN Watch Monitoring Programs
• Super-Eddington accretion in the Q2237+0305 quasar?
• X-ray absorption in Compton-thin AGN: the predictions of a model revisited
• Universality of coronal properties in accreting black holes across mass and accretion rate
• Early Growth of Massive Black Holes in Quasars
• Uncertainty Quantification of the Virial Black Hole Mass with Conformal Prediction
• Active galactic nuclei feedback at parsec scale
• The Cliff: A Metal-Poor Little Red Dot Hosting an Overmassive Black Hole at $z=3.55$
• A stellar dynamical mass measurement of an inactive black hole at redshift 2
• DEIMOS Observations of WISE-Selected, Optically Obscured AGNs
• Cosmological evolution of gas and supermassive black holes in idealized isolated halos
• On the non-evolution of the dependence of black hole masses on bolometric luminosities for QSOs
• The X-ray statistical properties of dust-obscured galaxies detected by eROSITA
• A Simple Condition for Sustained Super-Eddington Black Hole Growth
• Cold Quasar Investigation: Comparing Star Formation Rates to Black Hole Growth
• Detecting dark matter substructure with lensed quasars in optical bands