Central Masses and Broad-Line Region Sizes of Active Galactic Nuclei. II. A Homogeneous Analysis of a Large Reverberation-Mapping Database

Abstract

We present improved black hole masses for 35 active galactic nuclei (AGNs) based on a complete and consistent reanalysis of broad emission-line reverberation-mapping data. From objects with multiple line measurements, we find that the highest precision measure of the virial product is obtained by using the cross-correlation function centroid (as opposed to the cross-correlation function peak) for the time delay and the line dispersion (as opposed to full width half maximum) for the line width and by measuring the line width in the variable part of the spectrum. Accurate line-width measurement depends critically on avoiding contaminating features, in particular the narrow components of the emission lines. We find that the precision (or random component of the error) of reverberation-based black hole mass measurements is typically around 30%, comparable to the precision attained in measurement of black hole masses in quiescent galaxies by gas or stellar dynamical methods. Based on results presented in a companion paper by Onken et al., we provide a zero-point calibration for the reverberation-based black hole mass scale by using the relationship between black hole mass and host-galaxy bulge velocity dispersion. The scatter around this relationship implies that the typical systematic uncertainties in reverberation-based black hole masses are smaller than a factor of three. We present a preliminary version of a mass-luminosity relationship that is much better defined than any previous attempt. Scatter about the mass-luminosity relationship for these AGNs appears to be real and could be correlated with either Eddington ratio or object inclination.

61 pages, including 8 Tables and 16 Figures. Accepted for publication in The Astrophysical Journal

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• Quantifying the Diffuse Continuum Contribution of BLR Clouds to AGN Continuum Inter-band Delays
• Populating the galaxy velocity dispersion - supermassive black hole mass diagram: A catalogue of (M_bh, sigma) values
• Simultaneous Ultraviolet and X-ray Observations of the Seyfert Galaxy NGC 4151. I. Physical Conditions in the X-ray Absorbers
• Supermassive black holes with high accretion rates in active galactic nuclei. XI. Accretion disk reverberation mapping of Mrk 142
• Chasing obscuration in type-I AGN: discovery of an eclipsing clumpy wind at the outer broad-line region of NGC 3783
• The Black Hole-Bulge Relationship in Luminous Broad-Line Active Galactic Nuclei and Host Galaxies
• Optical Spectral Properties of Swift BAT Hard X-ray Selected Active Galactic Nuclei Sources
• Broad-Line Reverberation in the Kepler-Field Seyfert Galaxy Zw 229-015
• Black hole scaling relations of active and quiescent galaxies: Addressing selection effects and constraining virial factors
• Supermassive Black Holes with High Accretion Rates in Active Galactic Nuclei. VIII. Structure of the Broad-Line Region and Mass of the Central Black Hole in Mrk 142
• Radio-emitting narrow-line Seyfert 1 galaxies in the JVLA perspective
• Quasar Accretion Disk Sizes From Continuum Reverberation Mapping From the Dark Energy Survey
• The Color Variability of Quasars
• The M_BH - M_star relation for X-ray obscured, red QSOs at 1.2< z <2.6
• Chandra High Energy Grating Observations of the Fe Ka Line Core in Type 2 Seyfert Galaxies: A Comparison with Type 1 Nuclei
• The Origin of the Intrinsic Scatter in the Relation Between Black Hole Mass and Bulge Luminosity for Nearby Active Galaxies
• Modeling the UV/optical continuum time-lags in AGN
• ERQs are the BOSS of Quasar Samples: The Highest-Velocity [OIII] Quasar Outflows
• The soft X-ray emission of Ark 120. XMM-Newton, NuSTAR, and the importance of taking the broad view
• A Quintet of Black Hole Mass Determinations
• The near-infrared broad emission line region of active galactic nuclei. II. The one-micron continuum
• Dust-Deficient Palomar-Green Quasars and the Diversity of AGN Intrinsic IR Emission
• The Unified Model of Active Galactic Nuclei: II. Evolutionary Connection
• Mass Outflow from the Nucleus of the Seyfert 1 Galaxy NGC 4151
• XMM-Newton observations of the Narrow-Line Seyfert 1 galaxy Mrk 335 in an historical low X-ray flux state
• Twelve years of X-ray and optical variability in the Seyfert galaxy NGC 4051
• SDSS J1254+0846: A Binary Quasar Caught in the Act of Merging
• A Bar Fuels a Super-Massive Black Hole?: Host Galaxies of Narrow-Line Seyfert 1 Galaxies
• The Black Hole -- Bulge Mass Relation including Dwarf Galaxies Hosting Active Galactic Nuclei
• The XMM-Newton view of AGN with intermediate mass black holes
• The Lick AGN Monitoring Project 2011: Dynamical Modeling of the Broad Line Region in Mrk 50
• Is Mg II 2800 a Reliable Virial Broadening Estimator for Quasars?
• The rise of an ionized wind in the Narrow Line Seyfert 1 Galaxy Mrk 335 observed by XMM-Newton and HST
• A Radio Study of the Seyfert galaxy Markarian 6: Implications for Seyfert life-cycles
• Application of Stochastic Modeling to Analysis of Photometric Reverberation Mapping Data
• Large-scale outflows in luminous QSOs revisited: The impact of beam smearing on AGN feedback efficiencies
• Dynamical and Spectral Modeling of the Ionized Gas and Nuclear Environment in NGC 3783
• The spatially resolved broad line region of IRAS 09149-6206
• BLR Physical Conditions in Extreme Population A Quasars: a Method to Estimate Central Black Hole Mass at High Redshift
• The central parsec of NGC 3783: a rotating broad emission line region, asymmetric hot dust structure, and compact coronal line region
• On the geometry of broad emission region in quasars
• Radiation pressure confinement - II. Application to the broad line region in active galactic nuclei
• First Results from the Lick AGN Monitoring Project: The Mass of the Black Hole in Arp 151
• The dependence of quasar variability on black hole mass
• A selection effect boosting the contribution from rapidly spinning black holes to the Cosmic X-ray Background
• Monitoring AGNs with Hβ Asymmetry. I. First Results: Velocity-resolved Reverberation Mapping
• Hubble Space Telescope ultraviolet spectroscopy of blazars: emission lines properties and black hole masses
• The resolved size and structure of hot dust in the immediate vicinity of AGN
• The Black Hole Mass of NGC 4151: Comparison of Reverberation Mapping and Stellar Dynamical Measurements
• Space Telescope and Optical Reverberation Mapping Project. IX. Velocity-Delay Maps for Broad Emission Lines in NGC 5548
• Probing Acceleration and Turbulence at Relativistic Shocks in Blazar Jets
• Massive black hole evolution models confronting the n-Hz amplitude of the stochastic gravitational wave background
• New evidence for the ubiquity of prominent polar dust emission in AGN on tens of parsec scales
• Calibrating CIV-based black hole mass estimators
• Detection of Time Lags Between Quasar Continuum Emission Bands based on Pan-STARRS Light-curves
• A Combined Optical and X-ray Study of Unobscured Type 1 AGN. II. Relation Between X-ray Emission and Optical Spectra
• Mid-Infrared Properties of the Swift Burst Alert Telescope Active Galactic Nuclei Sample of the Local Universe. I. Emission-Line Diagnostics
• A Reverberation Lag for the High-Ionization Component of the Broad Line Region in the Narrow-Line Seyfert 1 Mrk 335
• The shape of broad-line profiles in AGN
• The Civ line width distribution for quasars and its implications for broad-line region dynamics and virial mass estimation
• Continuum Reverberation Mapping of the Accretion Disks in Two Seyfert 1 Galaxies
• X-ray evidence for a mildly relativistic and variable outflow in the luminous Seyfert 1 galaxy Mrk509
• A Revised Calibration of the Virial Mass Estimator for Black Holes in Active Galaxies Based on Single-epoch H$\beta$ Spectra
• Discovery of a ~5 day characteristic timescale in the Kepler power spectrum of Zw 229-15
• The Black Hole Mass of NGC 4151. II. Stellar Dynamical Measurement from Near-Infrared Integral Field Spectroscopy
• Regulation of Black Hole Winds and Jets Across the Mass Scale
• The UV peak in Active Galactic Nuclei : a false continuum from blurred reflection ?
• Rest-frame Optical Spectra and Black Hole Masses of 3<z<6 Quasars
• Failed radiatively Accelerated Dusty Outflow model of the Broad Line Region in Active Galactic Nuclei. I. Analytical solution
• Quasar Black Hole Mass Estimates in the Era of Time Domain Astronomy
• Reverberation Mapping of the Broad-line Region in NGC 5548: Evidence for Radiation Pressure?
• A Log-Quadratic Relation Between the Nuclear Black-Hole Masses and Velocity Dispersions of Galaxies
• The dust sublimation radius as an outer envelope to the bulk of the narrow Fe Kalpha line emission in Type 1 AGN
• Weak Hard X-ray Emission from Two Broad Absorption Line Quasars Observed with NuSTAR: Compton-thick Absorption or Intrinsic X-ray Weakness?
• A reflection origin for the soft and hard X-ray excess of Ark 120
• Observatory science with eXTP
• A comprehensive analysis of the hard X-ray spectra of bright Seyfert galaxies
• Ultraviolet and X-ray variability of active galactic nuclei with Swift
• Jet collimation in NGC 315 and other nearby AGN
• Spectral Properties From Lyman-alpha to H-alpha For An Essentially Complete Sample of Quasars I: Data
• Mid-IR Variability and Dust Reverberation Mapping of Low-$z$ Quasars. I. Data, Methods and Basic Results
• Parent population of flat-spectrum radio-loud narrow-line Seyfert 1 galaxies
• The Mass of the Black Hole in Arp 151 from Bayesian Modeling of Reverberation Mapping Data
• Constraining the AGN Contribution in a Multiwavelength Study of Seyfert Galaxies
• Optical Monitoring of BL Lacertae Object S5 0716+714 with a Novel Multi-Peak Interference Filter
• The Curious Case of ASASSN-20hx: A Slowly-Evolving, UV and X-ray Luminous, Ambiguous Nuclear Transient
• Correlation between Galaxy Mergers and Luminous AGN
• VLT/ISAAC Spectra of the H-beta Region in Intermediate Redshift Quasars
• Mass Functions of Supermassive Black Holes Across Cosmic Time
• How frequent are close supermassive binary black holes in powerful jet sources?
• Estimating Black Hole Masses in Quasars Using Broad Optical and UV Emission Lines
• The Sloan Digital Sky Survey Reverberation Mapping Project: The H$\beta$ Radius-Luminosity Relation
• Virial Black Hole Mass Estimates for 280,000 AGNs from the SDSS Broad-Band Photometry and Single Epoch Spectra
• Location of Gamma-ray emission and magnetic field strengths in OJ 287
• Can reverberation-measured quasars be used for cosmology?
• Multifrequency variability of the blazar AO 0235+164. The WEBT campaign in 2004-2005 and long-term SED analysis
• Can we measure the accretion efficiency of Active Galactic Nuclei?
• GOALS-JWST: Mid-Infrared Spectroscopy of the Nucleus of NGC 7469
• Detection of a possible X-ray Quasi-periodic Oscillation in the Active Galactic Nucleus 1H~0707-495
• The Lick AGN Monitoring Project: Alternate Routes to a Broad-line Region Radius
• VLT/ISAAC Spectra of the H-beta Region in Intermediate-Redshift Quasars II. Black Hole Mass and Eddington Ratio
• The mass of the black hole in 3C 273
• Low-luminosity Active Galaxies and their Central Black Holes
• A remarkable long-term light curve, and deep, low-state spectroscopy: Swift & XMM-Newton monitoring of the NLS1 galaxy Mkn 335
• Probing the Disk-jet Connection of the Radio Galaxy 3C120 Observed with Suzaku
• On the multi-wavelength variability of Mrk 110: Two components acting at different timescales
• Multi-epoch X-ray observations of the Seyfert 1.2 galaxy Mrk 79: bulk motion of the illuminating X-ray source
• Constraining the Spin of the Black Hole in Fairall 9 with Suzaku
• To TDE or not to TDE: The luminous transient ASASSN-18jd with TDE-like and AGN-like qualities
• Constraining the location of rapid gamma-ray flares in the FSRQ 3C 273
• IC 3599 did it again: A second outburst of the X-ray transient Seyfert 1.9 Galaxy
• Detecting eccentric supermassive black hole binaries with pulsar timing arrays: Resolvable source strategies
• The nature of the HE0450-2958 System
• X-ray Variability of the Seyfert 1 Markarian 335: Power Spectrum and Time Lags
• The black hole mass, Eddington ratio, and M_bh-σ_[O III] relation in young radio galaxies
• Gemini/GMOS IFU stellar kinematics of the nuclear region of six nearby active galaxies
• Spectropolarimetry of Seyfert 1 galaxies with equatorial scattering: Black hole masses and Broad Line Region characteristics
• A Multi-Wavelength Study of the Nature of Type 1.8/1.9 Seyfert Galaxies
• Examining AGN UV/optical Variability Beyond the Simple Damped Random Walk
• Where are the X-ray QPOs in active galaxies?
• The Link Between Star Formation and Accretion in LINERs: A Comparison with other AGN Subclasses
• High-ionization mid-infrared lines as black hole mass and bolometric luminosity indicators in active galactic nuclei
• Optical Monitoring of the Broad-Line Radio Galaxy 3C390.3
• On the Observational Difference Between the Accretion Disk-Corona Connections among Super- and Sub-Eddington Accreting Active Galactic Nuclei
• Accretion and nuclear activity of quiescent supermassive black holes. I: X-ray study
• Quasar Accretion Disk Sizes from Continuum Reverberation Mapping in the DES Standard Star Fields
• The Rise and Fall of ASASSN-18pg: Following a TDE from Early To Late Times
• Supermassive Black Hole Mass Estimates Using Sloan Digital Sky Survey Quasar Spectra at 0.7 < z < 2
• Optical and Near-IR long-term monitoring of NGC3783 and MR2251-178: evidence for variable near-IR emission from thin accretion discs
• A Bayesian Method for the Intercalibration of Spectra in Reverberation Mapping
• Warping and precession in galactic and extragalactic accretion disks
• Binary radial velocity measurements with space-based gravitational-wave detectors
• Understanding Broad Mg II Variability in Quasars with Photoionization: Implications for Reverberation Mapping and Changing-Look Quasars
• Eddington-Limited Accretion in z~2 WISE-selected Hot, Dust-Obscured Galaxies
• Locating the gamma-ray emission site in Fermi/LAT blazars from correlation analysis between 37 GHz radio and gamma-ray light curves
• The X-Ray Variability of a Large, Serendipitous Sample of Spectroscopic Quasars
• Eddington ratio governs the equivalent width of MgII emission line in active galactic nuclei
• The Sloan Digital Sky Survey Reverberation Mapping Project: Low-Ionization Broad-Line Widths and Implications for Virial Black Hole Mass Estimation
• Multiwavelength campaign on Mrk 509. I. Variability and spectral energy distribution
• Long-term optical spectral monitoring of a changing-look AGN NGC 3516 I: Continuum and broad-line flux variability
• Further Evidence for a Supermassive Black Hole Mass - Pitch Angle Relation
• The near-IR $M_{bh}$ - L and $M_{bh}$ - n relations
• Probing the Ionization Structure of the Narrow Line Region in the Seyfert 1 Galaxy NGC 4151
• LLAMA: The $M_{BH}$ - ${\sigma }_{\star }$ Relation of the most luminous local AGNs
• Broadband study of hard X-ray selected absorbed AGN
• Revisiting The Spectral and Timing Properties of NGC 4151
• NLS1 galaxies and estimation of their central black hole masses from the X-ray excess variance method
• Double quasars: probes of black hole scaling relationships and merger scenarios
• Simulations of the OzDES AGN Reverberation Mapping Project
• Partial coverage of the Broad Line Region of Q1232+082 by an intervening H2-bearing cloud
• Stellar Photometric Structures of the Host Galaxies of Nearby Type 1 Active Galactic Nuclei
• Harmonic QPOs and Thick Accretion Disk Oscillations in BL Lac Object AO 0235+164
• SDSS J160531.84+174826.1: A Dwarf Disk Galaxy With An Intermediate-Mass Black Hole
• The Seyfert 1 Galaxy Mrk 335 at a very low flux state: mapping the soft X-ray photoionised gas
• AGN have Underweight Black Holes and Reach Eddington
• A parallax distance to 3C 273 through spectroastrometry and reverberation mapping
• A view of the narrow-line region in the infrared: active galactic nuclei with resolved fine-structure lines in the Spitzer archive
• Discovery of Millimeter-Wave Excess Emission in Radio-Quiet Active Galactic Nuclei
• An Improved Method for Using MgII to Estimate Black Hole Masses in Active Galactic Nuclei
• Black hole mass and Eddington ratio distribution functions of X-ray selected broad-line AGNs at z~1.4 in the Subaru XMM-Newton Deep Field
• The Sloan Digital Sky Survey Reverberation Mapping Project: How Broad Emission Line Widths Change When Luminosity Changes
• EUCLIA - Exploring the UV/optical continuum lag in active galactic nuclei. I. a model without light echoing
• The Mass of the Black Hole in the Quasar PG 2130+099
• GRAVITY: a four-telescope beam combiner instrument for the VLTI
• Revealing the accretion disc corona in Mrk 335 with multi-epoch X-ray spectroscopy
• AGN Continuum Reverberation Mapping Based on Zwicky Transient Facility Light Curves
• Black hole mass estimation for Active Galactic Nuclei from a new angle
• Revealing the X-ray Variability of AGN with Principal Component Analysis
• CIV Line-Width Anomalies: The Perils of Low S/N Spectra
• Establishing accretion flares from massive black holes as a source of high-energy neutrinos
• A Comprehensive X-ray Spectral Analysis of the Seyfert 1.5 NGC 3227
• Discovery of a time lag between the soft X-ray and radio emission of the tidal disruption flare ASASSN-14li: Evidence for linear disk-jet coupling
• Estimate black hole masses of AGNs using ultraviolet emission line properties
• The Energy-dependent X-ray Timing Characteristics of the Narrow Line Seyfert 1 Mkn 766
• Weighing the Quiescent Central Black Hole in an Elliptical Galaxy with X-ray Emitting Gas
• The Complete Ultraviolet Spectrum of the Archetypal "Wind-Dominated" Quasar Mrk~231: Absorption and Emission from a High-Speed Dusty Nuclear Outflow
• Photoionized HBeta Emission in NGC 5548: It Breathes!
• The redshift evolution of major merger triggering of luminous AGN: a slight enhancement at z$\sim$2
• Overmassive black holes in dwarf galaxies out to z$\sim$0.9 in the VIPERS survey
• Towards equation of state of dark energy from quasar monitoring: Reverberation strategy
• Reverberation in tidal disruption events: dust echoes, coronal emission lines, multi-wavelength cross-correlations, and QPOs
• Variability of Fe II Emission Features in the Seyfert 1 Galaxy NGC 5548
• AGN with strong forbidden high-ionisation lines selected from the Sloan Digital Sky Survey
• CIV Black Hole Mass Measurements with the Australian Dark Energy Survey (OzDES)
• Evidence for relativistic features in the X-ray spectrum of Mrk 335
• What governs the bulk velocity of the jet components in active galactic nuclei?
• The Mass of the Central Black Hole in the Nearby Seyfert Galaxy NGC5273
• Time delay measurement of Mg II line in CTS C30.10 with SALT
• Photometric reverberation mapping of 3C120
• The nuclear environment of the NLS1 Mrk 335: obscuration of the X-ray line emission by a variable outflow
• CIV Broad Absorption Line Acceleration in Sloan Digital Sky Survey Quasars
• An orientation-based unification of young jetted AGN: the case of 3C 286
• Violent Intranight Optical Variability of a Radio-Loud Narrow-Line Seyfert 1 Galaxy: SDSS J094857.3+002225
• Virial Masses of Black Holes from Single Epoch Spectra of AGN
• Long-term monitoring of the archetype Seyfert galaxy MCG-6-30-15: X-ray, optical and near-IR variability of the corona, disc and torus
• Radio Properties of Low Redshift Broad Line Active Galactic Nuclei
• Outflows in the Narrow Line Region of Bright Seyfert Galaxies - I: GMOS-IFU Data
• Evidence for an intermediate line region in AGN's inner torus region and its evolution from narrow to broad line Seyfert I galaxies
• Black Hole Masses of Intermediate-Redshift Quasars: Near Infrared Spectroscopy
• [O III] line properties in two samples of radio-emitting narrow-line Seyfert 1 galaxies
• The Host Galaxy and Rapidly Evolving Broad-line Region in the Changing-look Active Galactic Nucleus 1ES 1927+654
• Relativistic plasma as the dominant source of the optical continuum emission in the broad-line radio galaxy 3C 120
• ALMA Observations of the Submillimeter Dense Molecular Gas Tracers in the Luminous Type-1 Active Nucleus of NGC 7469
• Acceleration and Substructure Constraints in a Quasar Outflow
• Modeling the Outflow in the Narrow-Line Region of Markarian 573:Biconical Illumination of a Gaseous Disk
• A Reverberation-Based Black Hole Mass for MCG-06-30-15
• The WEBT campaign to observe AO 0235+16 in the 2003-2004 observing season
• Rehabilitating CIV-based black hole mass estimates in quasars
• Integral field spectroscopy of nearby QSOs II. The molecular gas content and condition for star formation
• Probing narrow-line Seyfert 1 galaxies in the southern hemisphere
• GALEX observations of quasar variability in the ultraviolet
• The Lick AGN Monitoring Project: Photometric Light Curves and Optical Variability Characteristics
• Extending the Calibration of CIV-Based Single-Epoch Black Hole Mass Estimators for Active Galactic Nuclei
• AT 2017gbl: a dust obscured TDE candidate in a luminous infrared galaxy
• Evidence for variability timescale dependent UV/X-ray delay in Seyfert 1 AGN NGC 7469
• Tests for Standard Accretion Disk Models by Variability in Active Galactic Nuclei
• Evidence that most type 1 AGN are reddened by dust in the host ISM
• Photometric Reverberation Mapping of the Broad Emission Line Region in Quasars
• Vertical broad-line region structure in nearby active galactic nuclei
• Determining Quasar Black Hole Mass Functions from their Broad Emission Lines: Application to the Bright Quasar Survey
• Space Telescope and Optical Reverberation Mapping Project. VIII. Time Variability of Emission and Absorption in NGC 5548 Based on Modeling the Ultraviolet Spectrum
• The Changing-Look Quasar Mrk 590 is Awakening
• Large-Scale Parker Winds in Active Galactic Nuclei
• Probing the Kinematics of the Narrow-Line Region in Seyfert Galaxies with Slitless Spectroscopy: Observational Results
• Suzaku Studies of Wide-Band Spectral Variability of the Bright Type I Seyfert Galaxy Markarian 509
• On Reverberation Mapping Lag Uncertainties
• Mass loss from advective accretion disc around rotating black holes
• Prospects for measuring supermassive black hole masses with future extremely large telescopes
• A near-infrared relationship for estimating black hole masses in active galactic nuclei
• Probing black hole accretion tracks, scaling relations and radiative efficiencies from stacked X-ray active galactic nuclei
• The dust origin of the Broad Line Region and the model consequences for AGN unification scheme
• The chemical properties of low-redshift QSOs
• Reverberation and photoionization estimates of the Broad Line Region Radius in Low-z Quasars
• BLR kinematics and Black Hole Mass in Markarian 6
• On the Scatter in the Radius - Luminosity Relationship for Active Galactic Nuclei
• Monitoring AGNs with H$\beta$ Asymmetry. III. Long-term Reverberation Mapping Results of 15 Palomar-Green Quasars
• Simultaneous B'V'R' Monitoring of BL Lacertae Object S5~0716+714 and Detection of Inter-Band Time Delay
• Reverberation Mapping of the Kepler-Field AGN KA1858+4850
• X-ray and Radio Constraints on the Mass of the Black Hole in Swift J164449.3+573451
• Time Delay of MgII Emission Response for the Luminous Quasar HE 0435-4312: Towards Application of High-Accretor Radius-Luminosity Relation in Cosmology
• Physical properties of the first quasars
• Photoionized emission and absorption features in the high-resolution X-ray spectra of NGC 3783
• Time-delay measurement of MgII broad line response for the highly-accreting quasar HE 0413-4031: Implications for the MgII-based radius-luminosity relation
• X-Ray Variability of AGN and Relationship to Galactic Black Hole Binary Systems
• Search for X-ray occultations in Active Galactic Nuclei
• Calibration and Limitations of the Mg II line-based Black Hole Masses
• Anatomy of the AGN in NGC 5548: VII. Swift study of obscuration and broadband continuum variability
• Correlated X-ray and Optical Variability in Mkn 509
• A New H I Survey of Active Galaxies
• A search for X-ray reprocessing echoes in the power spectral density functions of AGN
• The orientation dependence of quasar single-epoch black hole mass scaling relationships
• AGN Black hole mass estimates using polarization in broad emission Lines
• Swift/UVOT grism monitoring of NGC 5548 in 2013: an attempt at MgII reverberation mapping
• Relation between winds and jets in radio-loud AGN
• Black Hole Mass Estimates and Rapid Growth of Supermassive Black Holes in Luminous $z\sim$ 3.5 Quasars
• Reverberation Mapping of Active Galactic Nuclei
• The variable, fast soft X-ray wind in PG 1211+143
• Quasar Rain: the Broad Emission Line Region as Condensations in the Warm Accretion Disk Wind
• Late time multi wavelength observations of Swift J1644+5734: A luminous optical/IR bump and quiescent X-ray emission
• A deep X-ray view of the bare AGN Ark120. V. Spin determination from disc-Comptonisation efficiency method
• The black holes of radio galaxies during the "Quasar Era": Masses, accretion rates, and evolutionary stage
• Consistency of the black hole mass determination in AGN from the reverberation and the X-ray excess variance method
• A Distinctive Disk-Jet Coupling in the Seyfert-1 AGN NGC 4051
• Accretion Disk Size Measurements of Active Galactic Nuclei Monitored by the Zwicky Transient Facility
• The phylogeny of quasars and the ontogeny of their central black holes
• Broad-line region structure and kinematics in the radio galaxy 3C 120
• The Centurion 18 telescope of the Wise Observatory
• Simulating the timescale dependent color variation in quasars with a revised inhomogeneous disk model
• The evolution of host mass and black hole mass in QSOs from the 2dF QSO Redshift Survey
• Frequency-resolved lags in UV/optical continuum reverberation mapping
• On the size of the Fe II emitting region in the AGN Akn 120
• Reverberation Mapping Measurements of Black Hole Masses and Broad-Line Region Kinematics in Mrk 817 and NGC 7469
• Current and future applications of Reverberation-mapped quasars in Cosmology
• Calibration of the virial factor $f$ in supermassive black hole masses of reverberation-mapped AGNs
• A Variable PV Broad Absorption Line and Quasar Outflow Energetics
• X-ray and Optical Correlation of Type I Seyfert NGC 3516 Studied with Suzaku and Japanese Ground-Based Telescopes
• XMM-Newton and Suzaku analysis of the Fe K complex in the Seyfert 1 galaxy Mrk 509
• A comparative study of optical/ultraviolet variability of narrow-line Seyfert 1 and broad-line Seyfert 1 active galactic nuclei
• Determining Inclinations of Active Galactic Nuclei Via Their Narrow-Line Region Kinematics - II. Correlation With Observed Properties
• Warm Absorbers and Outflows in the Seyfert-1 Galaxy NGC 4051
• UV/Optical disk reverberation lags despite a faint X-ray corona in the AGN Mrk 335
• Astronomical Distance Determination in the Space Age. Secondary distance indicators
• The connection between black hole mass and Doppler boosted emission in BL Lacertae type objects
• OzDES Reverberation Mapping Program: The first Mg II lags from five years of monitoring
• Dynamical structure of magnetized dissipative accretion flow around black holes
• Black Hole Mass, Host galaxy classification and AGN activity
• Reverberation mapping of narrow-line Seyfert 1 galaxy I Zwicky 1: black hole mass
• H0LiCOW VII. Cosmic evolution of the correlation between black hole mass and host galaxy luminosity
• Probing the Radio Loud/Quiet AGN dichotomy with quasar clustering
• X-ray and optical variability of Seyfert 1 galaxies as observed with XMM-Newton
• An XMM-Newton view of the `bare' nucleus of Fairall 9
• CIV and CIII] reverberation mapping of the luminous quasar PG 1247+267
• Reverberation Mapping of Changing-look Active Galactic Nucleus NGC 3516
• Velocity-resolved Reverberation Mapping of Changing-look Active Galactic Nucleus NGC~4151 During Outburst Stage: Evidence for Kinematics Evolution of Broad-line Region
• Gamma rays from Fast Black-Hole Winds
• The HST view of the broad line region in low luminosity AGN
• Outflows from active galactic nuclei: The BLR-NLR metallicity correlation
• The mass of the black hole in RE J1034+396
• Multiwavelength variability and correlation studies of Mrk 421 during historically low X-ray and $\gamma$-ray activity in 2015$-$2016
• Velocity-resolved Reverberation Mapping of Changing-look AGN NGC 2617
• How to constrain mass and spin of supermassive black holes through their disk emission
• A New Black Hole Mass Estimate for Obscured Active Galactic Nuclei
• Optical and radio properties of giant radio quasars: Central black hole characteristics
• Understanding AGN-Host Connection in Partially Obscured Active Galactic Nuclei. Part I: The Nature of AGN+HII Composites
• Can we improve CIV-based single epoch black hole mass estimations?
• SDSS J114657.79+403708.6: the third most distant blazar at z=5.0
• The Best Constraints on A Super-Eddington Accretion Flow: XMM-Newton Observations of An Intermediate-mass Black Hole
• The Ultra-Fast Outflow of the Quasar PG 1211+143 as Viewed by Time-Averaged Chandra Grating Spectroscopy
• Constraints on Compton-thick winds from black hole accretion disks: can we see the inner disk?
• MgII Line Variability of High Luminosity Quasars
• Is BL Lacertae an "orphan" AGN? Multiband and spectroscopic constraints on the parent population
• Prospects for gamma-ray observations of narrow-line Seyfert 1 galaxies with the Cherenkov Telescope Array
• Physical Conditions in the Inner Narrow Line Region of the Seyfert 2 Galaxy Markarian 573
• The Magellanic Quasars Survey. I. Doubling the Number of Known AGNs Behind the Small Magellanic Cloud
• Optical/UV-to-X-Ray Echoes from the Tidal Disruption Flare ASASSN-14li
• Bayesian Analysis of Quasar Lightcurves with a Running Optimal Average: New Time Delay Measurements of COSMOGRAIL Gravitationally Lensed Quasars
• The Close AGN Reference Survey (CARS): IFU survey data and the BH mass dependence of long-term AGN variability
• Abell 1201: Detection of an Ultramassive Black Hole in a Strong Gravitational Lens
• Spitzer Space Telescope Measurements of Dust Reverberation Lags in the Seyfert 1 Galaxy NGC 6418
• Lens-Aided Multi-Angle Spectroscopy (LAMAS) Reveals Small-Scale Outflow Structure in Quasars
• Polarization in lines - a new method for measuring black hole masses in active galaxies
• Stability of the Broad Line Region Geometry and Dynamics in Arp 151 Over Seven Years
• Detection of high velocity outflows in Seyfert 1 galaxy Mrk 590
• A Chandra view of NGC 3621: a bulgeless galaxy hosting an AGN in its early phase?
• Application of the Disk Evaporation Model to AGNs
• Evidence for Two Distinct Broad-Line Regions from Reverberation Mapping of PG 0026+129
• Supermassive Black Hole and Broad-line Region in NGC~5548: Results from Five-season Reverberation Mapping
• Infrared Classification and Luminosities For Dusty AGN and the Most Luminous Quasars
• A High Resolution View of the Warm Absorber in the Quasar MR2251-178
• Chandra Observations of Candidate "True" Seyfert 2 Nuclei
• The broad-line region and dust torus size of the Seyfert 1 galaxy PGC50427
• The Sloan Digital Sky Survey Reverberation Mapping Project: An Investigation of Biases in CIV Emission-Line Properties
• The rhythm of Fairall 9 -- I: Observing the spectral variability with XMM-Newton and NuSTAR
• The Rapid X-ray and UV Evolution of ASASSN-14ko
• AGN spectral states from simultaneous UV and X-ray observations by XMM-Newton
• Multi-timescale reverberation mapping of Mrk 335
• Short time-scale optical variability properties of the largest AGN sample observed with Kepler/K2
• Imprints of the Janis-Newman-Winicour spacetime on observations related to shadow and accretion
• The first spectroscopic dust reverberation programme on active galactic nuclei: the torus in NGC 5548
• MUSE observations of a changing-look AGN I: The re-appearance of the broad emission lines
• Intrinsic Absorption Properties in Active Galaxies Observed with the Far Ultraviolet Spectroscopic Explorer
• Radiative Efficiency of Disk Accretion in Individual SDSS QSOs
• Quasar Cartography: from Black Hole to Broad Line Region Scales
• The curtain remains open: NGC 2617 continues in a high state
• SDSS J013127.34-032100.1: a candidate blazar with a 11 billion solar mass black hole at $z$=5.18
• The AKARI 2.5-5.0 Micron Spectral Atlas of Type-1 Active Galactic Nuclei: Black Hole Mass Estimator, Line Ratio, and Hot Dust Temperature
• X-ray Variability Characteristics of the Seyfert 1 Galaxy NGC 3783
• A Consistent Set of Empirical Scaling Relations for Spiral Galaxies: The $(v_{\max },M_{\mathrm{DM}})$-$({\sigma }_0,M_{\mathrm{BH}},\varphi )$ Relations
• Short Timescale AGN X-ray Variability with EXOSAT: Black hole mass and Normalised Variability Amplitude
• Dust reverberation-mapping of the Seyfert 1 galaxy WPVS48
• Decoding signatures of extra dimensions and estimating spin of quasars from the continuum spectrum
• High-Resolution Absorption Spectroscopy of Multi-phase, High-Metallicity Gas Associated with the Luminous Quasar HE 0226-4110
• Extending Virial Black Hole Mass Estimates to Low-Luminosity or Obscured AGN: the cases of NGC 4395 and MCG -01-24-012
• A Herschel Study of 24 micron-Selected AGNs and Their Host Galaxies
• Broad iron emission lines in Seyfert Galaxies - re-condensation of gas onto an inner disk below the ADAF
• Novel calibrations of virial black hole mass estimators in active galaxies based on X-ray luminosity and optical/NIR emission lines
• A new model for the Warm Absorber in NGC 3783: a single medium in total pressure equilibrium
• Suzaku Observations of Iron Lines and Reflection in AGN
• Correlated X-ray/UV/optical variability and the nature of accretion disc in the bare Seyfert 1 galaxy Fairall~9
• Broad-line region in NGC 4151 monitored by two decades of reverberation mapping campaigns. I. Evolution of structure and kinematics
• X-ray Spectral and Variability Properties of Low-Mass AGN
• Probing variability patterns of the Fe K line complex in bright nearby AGNs
• Temporal correlation between the optical and γ-ray flux variations in the blazar 3C 454.3
• Warm Absorber Energetics in Broad Line Radio Galaxies
• NGC 5548: Lack of a Broad Fe K Line and Constraints on the Location of the Hard X-ray Source
• Multiwavelength Monitoring of the Dwarf Seyfert 1 Galaxy NGC 4395. III. Optical Variability and X-ray/UV/Optical Correlations
• Low-Luminosity AGN as analogues of Galactic Black Holes in the low/hard state: Evidence from X-ray timing of NGC 4258
• The Quasar SDSS J153636.22+044127.0: A Double-Peaked Emitter in a Candidate Binary Black-Hole System
• A Low-Mass Black Hole in the Nearby Seyfert Galaxy UGC 06728
• A High-Quality velocity-delay map of the broad-line region in NGC 5548
• Masses and Accretion Rates of Supermassive Black Holes in Active Galactic Nuclei from the INTEGRAL Survey
• Explaining the moderate UV/X-ray correlation in AGN
• Radio Properties of the BAT AGN: the FIR-Radio Relation, the Fundamental Plane, and the Main Sequence of Star Formation
• Constraints of Flat Spectrum Radio Quasars in the hadronic model: the case of 3C 273
• Multiple Regression Analysis of the Variable Component in the Near-Infrared Region for Type 1 AGN MCG+08-11-011
• Accretion Properties of A Sample of Hard X-ray (<60keV) Selected Seyfert 1 Galaxies
• Differential interferometry of QSO broad line regions I: improving the reverberation mapping model fits and black hole mass estimates
• Balmer Emission Line Profiles and the Complex Properties of Broad Line Regions in Active Galactic Nuclei
• Monitoring AGNs with Hβ Asymmetry. II. Reverberation Mapping of Three Seyfert Galaxies Historically Displaying Hβ Profiles with Changing Asymmetry: Mrk 79, NGC 3227, and Mrk 841
• Fundamental X-ray Corona Parameters of Swift/BAT AGN
• Black hole mass measurement using ALMA observations of [CI] and CO emissions in the Seyfert 1 galaxy NGC7469
• Chandra, HST/STIS, NICER, Swift, and TESS Detail the Flare Evolution of the Repeating Nuclear Transient ASASSN-14ko
• The host galaxy of a narrow-line Seyfert 1 galaxy RE J1034+396 with X-ray quasi-periodic oscillations
• Hard X-ray photon index as an indicator of bolometric correction in active galactic nuclei
• Magnetized Disk-Winds in NGC 3783
• Parsec-scale Dusty Winds in Active Galactic Nuclei: Evidence for Radiation Pressure Driving
• A Luminous Transient Event in a Sample of WISE-Selected Variable AGN
• EUCLIA. II. On the puzzling large UV to X-ray lags in Seyfert galaxies
• Broad-line region structure and line profile variations in the changing look AGN HE1136-2304
• SDSS-IV/SPIDERS: A Catalogue of X-Ray Selected AGN Properties; Spectral Properties and Black Hole Mass Estimates for SPIDERS SDSS DR14 Type 1 AGN
• Timing evidence in determining the accretion state of the Seyfert galaxy NGC 3783
• A Lyα blob and zabs {\approx} zem damped Lyα absorber in the dark matter halo of the binary quasar Q 0151+048
• A deep X-ray view of the bare AGN Ark 120. II. Evidence for Fe K emission transients
• The Sloan Digital Sky Survey Reverberation Mapping Project: Improving Lag Detection with an Extended Multi-Year Baseline
• Chemical evolution of the Universe at 0.7 < z < 1.6 derived from abundance diagnostics of the broad-line region of quasars
• SDSS J1130+0058 an X-shaped Radio Source With Double-Peaked Low-Ionization Emission Lines: A binary Black Hole System?
• The HELLAS2XMM survey. XIII. Multi-component analysis of the spectral energy distribution of obscured AGN
• Evolution of active galactic nuclei
• The Two-Phase, Two-Velocity Ionized Absorber in the Seyfert 1 Galaxy NGC 5548
• Hibernating black holes revealed by photometric mass functions
• The quasar PG 0844+349 in an X-ray weak state
• Multiwavelength campaign on Mrk 509. XIII. Testing ionized-reflection models on Mrk 509
• The X-ray Power Spectral Density Function and Black Hole Mass Estimate for the Seyfert AGN IC 4329a
• Pan-STARRS1 variability of XMM-COSMOS AGN. I. Impact on photometric redshifts
• What sparks the radio-loud phase of nearby quasars?
• A multi-epoch spectroscopic study of the BAL quasar APM 08279+5255 II. Emission- and absorption-line variability time lags
• Rapid Luminosity Decline and Subsequent Reformation of the Innermost Dust Distribution in the Changing-look AGN Mrk 590
• Size and disk-like shape of the broad-line region of ESO399-IG20
• Interpretation of Departure from the Broad Line Region Scaling in Active Galactic Nuclei
• The Changing Look Blazar B2 1420+32
• Broad-line Region of the Quasar PG 2130+099 from a Two-Year Reverberation Mapping Campaign with High Cadence
• A Spatially-Resolved Survey of Distant Quasar Host Galaxies: I. Dynamics of galactic outflows
• Physical Conditions in the Narrow-Line Region of Markarian 3. II. Photoionization Modeling Results
• A New Approach to the Internal Calibration of Reverberation Mapping Spectra
• Methods of Reverberation Mapping. I. Time-lag Determination by Measures of Randomness
• On the relation between the mass of Compact Massive Objects and their host galaxies
• Reverberation Mapping of IC4329A
• Comparing 3C 120 jet emission at small and large scales
• The LSST era of supermassive black holes accretion-disk reverberation mapping
• Discovery of an Ultraviolet Counterpart to an Ultra-Fast X-ray Outflow in the Quasar PG1211+143
• Radiation pressure on dust explains the Low Ionized Broad Emission Lines in Active Galactic Nuclei
• A Quasar Catalog with Simultaneous UV, Optical and X-ray Observations by Swift
• A Microlensing Accretion Disk Size Measurement in the Lensed Quasar WFI 2026-4536
• The 2QDES Pilot : The luminosity and redshift dependence of quasar clustering
• The role of the Gamma-Eddington ratio relation on the X-ray Baldwin effect in Active Galactic Nuclei
• Chandra High-Resolution X-ray Spectroscopy of the Fe K Line in the Seyfert 1 Galaxy NGC 3783
• Emergence of a Quasar Outflow
• Complex emission line region of Mrk 817
• A deep X-ray view of the bare AGN Ark 120. I. Revealing the Soft X-ray Line Emission
• Active Galactic Nuclei with Ultra-fast Outflows Monitoring Project: The Broad-line Region of Mrk 79 as a Disk Wind
• Suzaku Studies of the Central Engine in the Typical Type I Seyfert NGC 3227: Detection of Multiple Primary X-ray Continua with Distinct Properties
• VLBI Observations of a sample of Palomar-Green quasars I: parsec-scale morphology
• The Past and Future of Mid-Infrared Studies of AGN
• A physical model for the UV/optical power spectra of AGN
• Detection of a Parsec-Scale Jet in a Radio-Quiet Narrow-Line Seyfert 1 Galaxy with Highly Accreting Supermassive Black Hole
• Investigating the Nature of the Luminous Ambiguous Nuclear Transient ASASSN-17jz
• Scatter Analysis Along the Multidimensional Radius-Luminosity Relations for Reverberation-Mapped Mg II Sources
• Ultraviolet Emission-Line Correlations in Hubble/COS Spectra of Active Galactic Nuclei: Single-Epoch Black Hole Masses
• A Jet Model for the Broadband Spectrum of the Seyfert-1 Galaxy NGC 4051
• Chandra high resolution spectroscopy of the circumnuclear matter in the Broad Line Radio Galaxy 3C445
• Observational Evidence for Black Holes
• A Correlation Between the Ionization State of the Inner Accretion Disk and the Eddington Ratio of Active Galactic Nuclei
• Measuring Supermassive Black Holes in Distant Galaxies with Central Lensed Images
• Broad line region and black hole mass of PKS 1510-089 from spectroscopic reverberation mapping
• Suzaku Monitoring of the Iron K Emission Line in the Type 1 AGN NGC 5548
• Parsec-scale radio morphology and variability of a changing-look AGN: the case of Mrk 590
• Anatomy of the AGN in NGC 5548 IX. Photoionized emission features in the soft X-ray spectra
• A Suzaku Observation of NGC 4593: Illuminating the Truncated Disk
• First Stellar Velocity Dispersion Measurement of a Luminous Quasar Host with Gemini North Laser Guide Star Adaptive Optics
• The Suzaku Observation of NGC 3516: Complex Absorption and the Broad and Narrow Fe K Lines
• Estimating the size of X-ray lamppost coronae in active galactic nuclei
• A new method to measure the virial factors in the reverberation mapping of AGNs
• The broad Fe Kα line and supermassive black holes
• Dust reverberation mapping in the era of big optical surveys and its cosmological application
• Constraining the quasar population with the broad-line width distribution
• Determination of the size of the dust torus in H0507+164 through optical and infrared monitoring
• What is on Tap? The Role of Spin in Compact Objects and Relativistic Jets
• Short timescale variations of the Hα double-peaked profile of the nucleus of NGC 1097
• A correlation between the spectral and timing properties of AGN
• Absorption Measure Distribution in Mrk 509
• Testing a scale-independent method to measure the mass of black holes
• Suppressed star formation in circumnuclear regions in Seyfert galaxies
• Do Reverberation Mapping Analyses Provide an Accurate Picture of the Broad Line Region?
• Spectropolarimetric Observations of Active Galactic Nuclei with the 6-m BTA Telescope
• A Minor Merger Caught In The Act Of Fueling The AGN In Mrk 509
• Simultaneous H alpha and dust reverberation mapping of 3C120: Testing the bowl-shaped torus geometry
• Probing the nature and origin of dust in the reddened quasar IC 4329A with global modelling from X-ray to infrared
• The luminosity-dependent contribution from the broad line region to the wavelength-dependent lags in Mrk 110
• The Dust-to-Gas Ratio and the Role of Radiation Pressure in Luminous, Obscured Quasars
• Optical continuum photometric reverberation mapping of the Seyfert-1 galaxy Mrk509
• Localizing narrow Fe K$\alpha$ emission within bright AGN
• The Case for Standard Irradiated Accretion Disks in Active Galactic Nuclei
• The Blackhole-Dark Matter Halo Connection
• J004457+4123 (Sharov 21): not a remarkable nova in M31 but a background quasar with a spectacular UV flare
• A Study of Outflows in Luminous Quasars at Redshift $\sim 0.4-0.8$
• X-ray timing analysis of the quasar PG 1211+143
• Long-term optical, UV, and X-ray continuum variations in the changing-look AGN HE 1136-2304
• Physical Conditions in the X-ray Emission-line Gas in NGC 1068
• Further evidence to support a tidal disruption event in the changing-look AGN SDSS J0159
• Intraday Optical Variability of BL Lacertae
• Unusual Double-peaked Emission in the SDSS Quasar J093201.60+031858.7
• Discovery of the luminous X-ray ignition eRASSt J234402.9$-$352640; I. Tidal disruption event or a rapid increase in accretion in an active galactic nucleus?
• A Variable-Density Absorption Event in NGC 3227 mapped with Suzaku and Swift
• Radiative Driving of the AGN Outflows in the Narrow-Line Seyfert 1 Galaxy NGC 4051
• On Constraining the Growth History of Massive Black Holes via Their Distribution on the Spin-Mass Plane
• Multi-Wavelength Coverage of State Transitions in the New Black Hole X-Ray Binary Swift J1910.2-0546
• Radio morphology of southern narrow-line Seyfert 1 galaxies with Very Large Array observations
• Speed limits for radiation driven SMBH winds
• A Full Characterisation of the Supermassive Black Hole in IRAS 09149-6206
• Calibrating Mg II-based black-hole mass estimators using Low-to-High-Luminosity Active Galactic Nuclei
• Accretion disk wind as explanation for the broad-line region structure in NGC 5548
• A deep X-ray view of the bare AGN Ark 120. III. X-ray timing analysis and multiwavelength variability
• Modelling photometric reverberation data -- a disk-like broad-line region and a potentially larger black hole mass for 3C120
• Suzaku Monitoring of the Seyfert 1 Galaxy NGC5548: Warm Absorber Location and its Implication for Cosmic Feedback
• Anatomy of the AGN in NGC 5548: V. A clear view of the X-ray narrow emission lines
• An X-ray/SDSS sample (II): outflowing gas plasma properties
• Modelling Continuum Reverberation in AGN: A Spectral-Timing Analysis of the UV Variability Through X-ray Reverberation in Fairall 9
• Reaching the Peak of the quasar spectral energy distribution - II. Exploring the accretion disc, dusty torus and host galaxy
• A model for the X-ray absorption in Compton--thin AGN
• An FMOS Survey of moderate-luminosity broad-line AGN in COSMOS, SXDS and E-CDF-S
• The near-infrared radius-luminosity relationship for active galactic nuclei
• Implications of Einstein-Maxwell dilaton-axion gravity from the black hole continuum spectrum
• The reverberation signatures of rotating disc winds in active galactic nuclei
• First Detection of Near-Infrared Intraday Variations in the Seyfert 1 Nucleus NGC4395
• Robotic Reverberation Mapping of the Southern Seyfert NGC 3783
• Systematic Redshift of the Fe III UV Lines in Quasars. Measuring Supermassive Black Hole Masses under the Gravitational Redshift Hypothesis
• Reverberation Mapping of the Intermediate Mass Nuclear Black Hole in SDSS J114008.71+030711.4
• Expectations for time-delay measurements in active galactic nuclei with the Vera Rubin Observatory
• X-ray, UV and optical time delays in the bright Seyfert galaxy Ark 120 with co-ordinated Swift and ground-based observations
• A systematic study of the condensation of the corona and the application for ${\Gamma }_{2-10keV}-L_{\mathrm{bol}}/L_{\mathrm{Edd}}$ correlation in luminous active galactic nuclei
• Evidence for higher black hole spin in radio-loud quasars
• An extended size-luminosity relation for the reverberation-mapped AGNs: the role of the accretion rate
• Estimating AGN Black Hole Masses via Continuum Reverberation Mapping in the Era of LSST
• Magnetic fields of active galactic nuclei and quasars with polarized broad H-alpha lines
• Short-Timescale monitoring of the X-ray, UV and broad double-peak emission line of the nucleus of NGC 1097
• The Black Hole Mass of NGC 4151 from Stellar Dynamical Modeling
• Modelling the AGN broad line region using single-epoch spectra II. Nearby AGN
• Metallicity and Far-Infrared Luminosity of High Redshift Quasars
• Biases in the Quasar Mass-Luminosity Plane
• Constraints on the outer radius of the broad emission line region of active galactic nuclei
• Host Galaxies of z=4 Quasars
• Modeling photometric reverberation mapping data for the next generation of big data surveys. Quasar accretion disks sizes with the LSST
• An extensive study of blazar broad emission line: Changing-look blazars and Baldwin effect
• Intermediate-line Emission in AGNs: The Effect of Prescription of the Gas Density
• Variability of Moderate Luminosity Active Galactic Nuclei at z=0.36
• The X-ray Power Spectral Density Function of the Seyfert Active Galactic Nucleus NGC 7469
• Uncovering the Spectral Energy Distribution in Active Galaxies Using High Ionization Mid-infrared Emission Lines
• A multiwavelength-motivated X-ray model for the Circinus Galaxy
• Correlated modulation between the redshifted Fe K alpha line and the continuum emission in NGC 3783
• The relentless variability of Mrk 421 from the TeV to the radio
• 'Disc-jet' coupling in black hole X-ray binaries and active galactic nuclei
• NGC 7469 as seen by MEGARA: new results from high-resolution IFU spectroscopy
• Relativistic Fe K$\alpha$ Line Revealed in the Composite X-ray Spectrum of Narrow Line Seyfert 1 Galaxies --- do their black holes have averagely low or intermediate spins?
• High Eddington quasars as discovery tools: current state and challenges
• Interpreting broad emission-line variations II: Tensions between luminosity, characteristic size and responsivity
• The Timescale-Dependent Color Variability of Quasars Viewed with GALEX
• The accretion of a solar mass per day by a 17-billion solar mass black hole
• On Spin Dependence of the Fundamental Plane of Black Hole Activity
• The First Hard X-Ray Power Spectral Density Functions of AGN
• On the Virialization of Disk Winds: Implications for the Black Hole Mass Estimates in AGN
• The black hole mass of the $z=2.805$ multiply imaged quasar SDSS J2222+2745 from velocity-resolved time lags of the CIV emission line
• Correlated X-ray/UV/optical emission and short term variability in a Seyfert 1 galaxy NGC 4593
• Long term X-Ray Observations of Seyfert 1 Galaxy Ark 120: On the origin of soft-excess
• SDSS J0159 as an outlier in the Mbh-sigma space: further clues to support a central tidal disruption event?
• Spatially Resolving the Kinematics of the <100 μas Quasar Broad Line Region using Spectroastrometry
• Simultaneous optical monitoring of BL Lacertae object S5 0716+714 with high temporal resolution
• The variability of optical \feii emission in PG QSO 1700+518
• A new method to obtain the Broad Line Region size of high redshift quasars
• Variable optical polarization during high state in gamma-ray loud narrow line Seyfert 1 galaxy 1H 0323+342
• Kinematic signatures of AGN feedback in moderately powerful radio galaxies at z~2 observed with SINFONI
• Soft X-Ray Excess from Shocked Accreting Plasma in Active Galactic Nuclei
• The Seoul National University AGN monitoring project. II. BLR size and black hole mass of two AGNs
• H$\alpha$ Reverberation Mapping of the Intermediate-Mass Active Galactic Nucleus in NGC 4395
• Time Series Analysis of Active Galactic Nuclei: The case of Arp 102B, 3C 390.3, NGC 5548 and NGC 4051
• On the Emergence of Thousands of Absorption Lines in the Quasar PG1411+442: A Clumpy High-Column Density Outflow from the Broad Emission-Line Region?
• Relationship between X-ray spectral index and X-ray Eddington ratio for Mrk 335 and Ark 564
• Deficiency of Broad Line AGNs in Compact Groups of Galaxies
• The Cepheid Distance to the Narrow-Line Seyfert 1 Galaxy NGC 4051
• WISDOM project -- VI. Exploring the relation between supermassive black hole mass and galaxy rotation with molecular gas
• The Kinematics of Quasar Broad Emission Line Regions Using a Disk-wind Model
• A possible line-like emission feature at 8 keV in the Seyfert 1.2 UGC 3973
• Suzaku Observation of the Brightest Broad-Line Radio Galaxy 4C 50.55 (IGR J 21247+5058)
• AGN STORM 2. VII. A Frequency-resolved Map of the Accretion Disk in Mrk 817: Simultaneous X-ray Reverberation and UVOIR Disk Reprocessing Time Lags
• Nonthermal radiation from the central region of super-accreting active galactic nuclei
• H-AMR FORGE'd in FIRE I: Magnetic state transitions, jet launching and radiative emission in super-Eddington, highly magnetized quasar disks formed from cosmological initial conditions
• Optical multiband surface photometry of a sample of Seyfert galaxies. I. Large-scale morphology and local environment analysis of matched Seyfert and inactive galaxy samples
• Energy Dependent time lags in the Seyfert 1 galaxy NGC 4593
• Long-term monitoring of Ark 120 with Swift
• Search for Intra-day Optical Variability in $\gamma$-ray--loud Blazars S5 0716+714 and 3C 273
• An extremely X--ray weak blazar at z=5
• X-ray narrow line region variability as a geometry probe: The case of NGC 5548
• Black Hole Mass Estimation: How good is the virial estimate?
• Space Telescope and Optical Reverberation Mapping Project. XI. Disk-wind characteristics and contributions to the very broad emission lines of NGC 5548
• Spectroastrometry and Reverberation Mapping: the Mass and Geometric Distance of the Supermassive Black Hole in the Quasar 3C 273
• Long-term optical spectroscopic variations in blazar 3C 454.3
• Improving the Flux Calibration in Reverberation Mapping by Spectral Fitting: Application to the Seyfert Galaxy MCG--6-30-15
• Multiwavelength campaign on Mrk 509 XV. A global modeling of the broad emission lines in the Optical, UV and X-ray bands
• Cascades of shocks in Active Galactic Nuclei and their radiation
• From Thin to Thick: The Impact of X-ray Irradiation on Accretion Disks in AGN
• The Extreme Red Excess in Blazar Ultraviolet Broad Emission Lines
• Revisiting the Black Hole Masses of Soft X-ray-Selected Active Galactic Nuclei
• A note on black hole masses estimated by the second moment in Narrow Line Seyfert 1 Galaxies
• Dependence of NLRs sizes on [OIII] luminosity in low redshift AGN with double-peaked broad Balmer emission lines
• The warm absorber in NGC 5548: The lean years
• Systematically smaller single-epoch quasar black hole masses using a radius-luminosity relationship corrected for spectral bias
• X-Ray Variability and the Inner Region in Active Galactic Nuclei
• Analyses on the Variability Asymmetry of Kepler AGNs
• Narrow Fe-K$\alpha$ Reverberation Mapping Unveils the Deactivated Broad-Line Region in a Changing-Look Active Galactic Nucleus
• Ultraviolet and X-ray Variability of the Seyfert 1.5 Galaxy Markarian 817
• Black hole mass estimation using X-ray variability measurements in Seyfert galaxies
• The Extreme Super-Eddington NLS1 RX J0134.2-4258 -- II. A Weak-Line Seyfert Linking to the Weak-Line Quasar
• The radio detection and accretion properties of the peculiar nuclear transient AT 2019avd
• Measurement of The Broad Line Region Size in a Luminous MACHO Quasar
• SALT long-slit spectroscopy of LBQS 2113-4538: variability of the Mg II and Fe II component
• X-ray/UVOIR Frequency-resolved Time Lag Analysis of Mrk 335 Reveals Accretion Disk Reprocessing
• ALMA Probes the Molecular Gas Reservoirs in the Changing-Look Seyfert Galaxy Mrk 590
• The longest timescale X-ray variability reveals an evidence for active galactic nuclei in the high accretion state
• Near infrared and optical continuum emission region size measurements in the gravitationally lensed quasars Q0957+561 and SBS0909+532
• A Comparison of Two Methods for Estimating Black Hole Spin in Active Galactic Nuclei
• Reaching the Peak of the Quasar Spectral Energy Distribution I: Observations and Models
• Limits on luminosity and mass accretion rate of a radiation pressure dominated accretion disc
• Variation of Broad Emission Lines from QSOs with Optical/UV Periodicity to Test the Interpretation of Supermassive Binary Black Holes
• Do quasar broad-line velocity widths add any information to virial black hole mass estimates?
• On the UV/optical variation in NGC 5548: new evidence against the reprocessing diagram
• The low-metallicity QSO HE 2158-0107: A massive galaxy growing by the accretion of nearly pristine gas from its environment?
• Relation between the variations in the MgII $\lambda 2798$ emission-line and the 3000 Å continuum
• Variability and the size-luminosity relation of the intermediate mass AGN in NGC 4395
• The Effect of Variability on the Estimation of Quasar Black Hole Masses
• Relativistic redshifts in quasar broad lines
• A new discovery space opened by eROSITA: Ionised AGN outflows from X-ray selected samples
• Velocity-resolved Reverberation Mapping of Changing-look Active Galactic Nucleus NGC 4151 during Outburst Stage. II. Four Season Observation Results
• No Signatures of Black-Hole Spin in the X-ray Spectrum of the Seyfert 1 Galaxy Fairall 9
• A 6.4yr optical quasi-periodic oscillations in SDSS J075217.84+193542.2: a new candidate for central binary black hole system
• A Negative Long Lag from the Optical to the UV Continuum in Fairall 9
• The underlying driver for the \civ Baldwin effect in QSOs with $0<z<5$
• Magnetohydrodynamic stability of broad line region clouds
• A Polarimetric Method for Measuring Black Hole Masses in Active Galactic Nuclei
• Local Active Galactic Nuclei with Large Broad-Hα Variability Reside in Red Galaxies
• The Connection between 3.3 μm PAH Emission and AGN Activity
• Scaling of X-ray spectral properties of a black hole in the Seyfert 1 galaxy NGC~7469
• AGN STORM 2: II. Ultraviolet Observations of Mrk817 with the Cosmic Origins Spectrograph on the Hubble Space Telescope
• Chemical abundances along the quasar main sequence
• The fast UV variability of the active galactic nucleus in Fairall 9
• Modelling time delays from two reprocessors in active galactic nuclei
• The intermediate-ionization lines as virial broadening estimators for Population A quasars
• OzDES Reverberation Mapping Program: Lag recovery reliability for 6-year CIV analysis
• On the gamma-ray emission from 3C 120
• Further Evidence for the Accretion Disk Origination of the Double-Peaked Broad H$\alpha$ of 3C390.3
• Nicmos Polarimetry of "Polar Scattered" Seyfert 1 Galaxies
• A practical guide to the massive black hole cosmic history
• Coronae above accretion disks around black holes: The effect of Compton cooling
• On Measuring the Variation of High Energy Cut-off in Active Galactic Nuclei
• SALT long-slit spectroscopy of CTS C30.10: two-component Mg II line
• An X-ray variable absorber within the Broad Line Region in Fairall 51
• Constraints on accretion disk size in the massive type 1 quasar PG 2308+098 from optical continuum reverberation lags
• A High Fraction of Double-peaked Narrow Emission Lines in Powerful Active Galactic Nuclei
• The supermassive black hole masses of reverberation-mapped active galactic nuclei
• Simultaneous detection and analysis of optical and ultraviolet broad emission lines in quasars at z~2.2
• Single-Epoch Black Hole Mass Estimators For Broad-Line Active Galactic Nuclei: Recalibrating Hbeta with A New Approach
• Flares in the changing look AGN Mrk 590. I: The UV response to X-ray outbursts suggests a more complex reprocessing geometry than a standard disk
• A systematic search for hidden type 1 AGNs: gas kinematics and scaling relations
• Long-term X-ray stability and UV variability of the ionized absorption in NGC 3783
• 3C390.3: More Stable Evidence for Origination of Double-Peaked Broad Balmer Lines from Accretion Disk Near Central Black Hole
• Application of the spine-layer jet radiation model to outbursts in the broad-line radio galaxy 3C 120
• Update on the X-ray variability plane for active galactic nuclei: The role of the obscuration
• Effects of extended components of \oiii on the correlation between the \oiii luminosity and the power-law continuum luminosity for active galactic nuclei
• Virilization of the Broad Line Region in Active Galactic Nuclei - connection between shifts and widths of broad emission lines
• Robotic Reverberation Mapping of Arp 151
• Unveiling the hosts of parsec-scale massive black hole binaries: morphology and electromagnetic signatures
• Evidence for a milliparsec-separation Supermassive Binary Black Hole with quasar microlensing
• Constraints from dwarf galaxies on black hole seeding and growth models with current and future surveys
• The fast transient AT 2023clx in the nearby LINER galaxy NGC 3799 as a tidal disruption of a very low-mass star
• Multiwavelength campaign on Mrk 509: Reverberation of the Fe Kalpha line
• Scary Barbie: An Extremely Energetic, Long-Duration Tidal Disruption Event Candidate Without a Detected Host Galaxy at z = 0.995
• The central engine of the highest redshift blazar
• Line profile and continuum variability in the very broad-line Seyfert galaxy Mrk 926
• A New Radio Loudness Diagnostic for Active Galaxies: a Radio-To-Mid-Infrared Parameter
• The Inner Accretion Flow in the Resurgent Seyfert-1.2 AGN Mrk 817
• Estimating supermassive black hole masses in AGNs using polarization of broad MgII, H$\alpha$ and H$\beta$ lines
• Modeling the Infrared Reverberation Response of the Circumnuclear Dusty Torus in AGNs: An Investigation of Torus Response Functions
• The Sloan Digital Sky Survey Reverberation Mapping Project: Composite Lags at $z\lesssim 1$
• Does black hole continuum spectrum signal f(R) gravity in higher dimensions?
• MAXI J1820+070 with NuSTAR II. Flaring during the hard to soft state transition with a long soft lag
• Multi-Phase Magnetic Fields in the Galaxy NGC 3627
• Automatized photometric monitoring of active galactic nuclei with the 46 cm telescope of the Wise observatory
• Measuring Supermassive Black Hole Masses: Correlation between the Redshifts of the Fe III UV Lines and the Widths of Broad Emission Lines
• SMM J04135+10277: A Candidate Early-Stage "Wet-Dry" Merger of Two Massive Galaxies at z=2.8
• On possible proxies of AGN light curves cadence selection in future time domain surveys
• Quasar variability limits on cosmological density of cosmic strings
• Estimators of Bolometric Luminosity and Black Hole Mass with Mid-infrared Continuum Luminosities for Dust-obscured Quasars: Prevalence of Dust-obscured SDSS Quasars
• Estimating Masses of Supermassive Black Holes in Active Galactic Nuclei from the Halpha Emission Line
• The optical emission line spectrum of Mark 110
• Using the Properties of Broad Absorption Line Quasars to Illuminate Quasar Structure
• The non-constant slope of the CIV Baldwin effect in NGC 4151
• Mid-Infrared Selected Quasars I: Virial Black Hole Mass and Eddington Ratios
• The Accuracy of Supermassive Black Hole Masses Determined by the Single-Epoch-Spectrum (Dibai) Method
• A deep X-ray view of the bare AGN Ark 120. VI. Geometry of the hot corona from spectroscopic and polarization signatures
• Investigating the interplay between the coronal properties and the hard X-ray variability of active galactic nuclei with NuSTAR
• X-ray spectra of hot accretion flows
• Radio Properties of Low Redshift Broad Line Active Galactic Nuclei Including Extended Radio Sources
• Correlated spectral and temporal changes in 3C 390.3: a new link between AGN and Galactic Black Hole Binaries?
• Characterization of the emitting and absorbing media around the nucleus of the active galaxy UGC11763 using XMM-Newton data
• The Most Massive Active Galactic Nuclei at $1\lesssim z\lesssim 2$
• AGN and quasar science with aperture masking interferometry on the James Webb Space Telescope
• Reverberation Mapping with Intermediate-Band Photometry: Detection of Broad-Line H$\alpha$ Time Lags for Quasars at $0.2<z<0.4$
• Measuring Light Echos in NGC 4051
• Extended Corona Models of X-ray Reverberation in the AGN 1H~0707-495 and IRAS 13224-3809
• Continuum optical-UV and X-ray variability of AGN: current results and future challenges
• Long-term multi-wavelength study of 1ES 0647+250
• Probing the disk-corona systems and broad line regions of changing-look quasars with X-ray and optical observations
• UV spectral diagnostics for low redshift quasars: estimating physical conditions and radius of the Broad Line Region
• Gravitational Microlensing of a Reverberating Quasar Broad Line Region - I. Method and Qualitative Results
• A numerical study of long-term multi-wavelength blazar variability
• The X-ray variability history of Markarian 3
• Continuum reverberation mapping of the quasar PG 2130+099
• Contrasting X-ray/UV time-lags in Seyfert 1 galaxies NGC 4593 and NGC 7469 using AstroSat observations
• Lyman Alpha Constraints on Very Low Luminosity AGN
• The HST view of the innermost narrow line region
• Strong Response of the very broad h$\beta$ Emission Line in Luminous Radio-Quite Quasar pg1416-129
• The size of BLRs of low luminous Active Galactic Nuclei
• A parsec-scale faint jet in the nearby changing-look Seyfert galaxy Mrk 590
• X-ray dips in the Seyfert Galaxy Fairall 9: Compton-thick "comets" or a failed radio galaxy?
• Broadband X-ray/UV/optical time-resolved spectroscopy of NGC 5548: The origin of the UV/optical variability in active galactic nuclei
• Probing AGN Inner Structure with X-ray Obscured Type 1 AGN
• The Importance of Broad Emission-Line Widths in Single Epoch Black Hole Mass Estimates
• Kinematics of the H$\alpha$ and H$\beta$ broad line region in an SDSS sample of type 1 AGNs
• Estimation of the size and structure of the broad line region using Bayesian approach
• Broadband X-ray observations of four gamma-ray narrow-line Seyfert 1 galaxies
• Observations of Outflowing UV Absorbers in NGC 4051 with the Cosmic Origins Spectrograph
• Dusty plasma in active galactic nuclei
• A 3.8yr optical quasi-periodic oscillations in blue quasar SDSS J132144+033055 through combined light curves from CSS and ZTF
• Near-infrared spectroscopy of a nitrogen-loud quasar SDSS J1707+6443
• Black hole masses of weak emission line quasars based on continuum fit method
• Wavelength-resolved reverberation mapping of intermediate redshift quasars HE 0413-4031 and HE 0435-4312: Dissecting Mg II, optical Fe II, and UV Fe II emission regions
• Quasi-simultaneous observations of radio and X-ray variability in three radio-quiet Seyfert galaxies
• Reverberation Mapping of PG 0934+013 with the Southern African Large Telescope
• Energy-dependent variability of the bare Seyfert 1 galaxy Ark 120
• On the Performance of Quasar Reverberation Mapping in the Era of Time-Domain Photometric Surveys
• XMM-Newton observations of 4 luminous radio-quiet AGN, and the soft X-ray excess problem
• Quasar main sequence in the UV plane
• Intra-day optical multi-band quasi-simultaneous observation of BL Lacertae object S5 0716+714 from 2013 to 2016
• Discovery of a very Lyman-$\alpha$-luminous quasar at z=6.62
• What Does the Virial Coefficient of the \Hb Broad-Line Region Depend On?
• Prospects for gamma-ray observations of narrow-line Seyfert 1 galaxies with the Cherenkov Telescope Array II. Gamma-gamma absorption in the broad-line region radiation fields
• Astrometric Reverberation Mapping
• Spectral index-mass accretion rate correlation and evaluation of black hole masses in AGNs 3C~454.3 and M87
• On the Effects of Dissipative Turbulence on the Narrow Emission-Line Ratios in Seyfert Galaxies
• Multiwavelength Monitoring of the Dwarf Seyfert 1 Galaxy NGC 4395. II. X-ray and Ultraviolet Continuum Variability
• The origin of the vanishing soft X-ray excess in the changing-look Active Galactic Nucleus Mrk 590
• The microvariability and wavelength dependence of polarization degree/angle of BL Lacertae in the outburst 2020 to 2021
• Estimating Black Hole Masses in Hundreds of Quasars
• A test of the failed disk wind scenario for the origin of the broad line region in active galactic nuclei
• A NICER Look at Strong X-ray Obscuration in the Seyfert-2 Galaxy NGC 4388
• CIV emission line properties and uncertainties in black hole mass estimates of z ~ 3.5 quasars
• Reverberation-mapping of distant quasars: time-lag determination using different methods
• The SDSS-V Black Hole Mapper Reverberation Mapping Project: CIV BAL Acceleration in the Quasar SBS 1408+544
• Wavelength-resolved Reverberation Mapping of quasar CTSC30.10: Dissecting MgII and FeII emission regions
• The SOUX AGN Sample: SDSS-XMM-Newton Optical, Ultraviolet and X-ray selected active galactic nuclei spanning a wide range of parameter space -- Sample definition
• Spectral variability of the 3C 390.3 nucleus for more than twenty years. I. Variability of the broad and narrow emission-line fluxes
• The coronal parameters of local Seyfert galaxies
• Stringent constraints on the light boson model with supermassive black hole spin measurements
• Multiwavelength campaign on Mrk 509 VII. Relative abundances of the warm absorber
• Predicting the broad lines polarization emitted by supermassive binary black holes
• The Correlation Between Spectral Index And Accretion Rate For AGN
• Spiral Arms in Broad-line Regions of Active Galactic Nuclei. I. Reverberation and Differential Interferometric Signals of Tightly Wound Cases
• Quasars as standard candles VI: spectroscopic validation of the cosmological sample
• Modelling the AGN broad line region using single-epoch spectra I. The test case of Arp 151
• Multi-year characterisation of the broad-band emission from the intermittent extreme BL Lac 1ES~2344+514
• Fourier-Resolved Spectroscopy of AGN using XMM-Newton data: I. The 3-10 keV band results
• Locating positions of γ-ray--emitting regions in blazars
• Concordance between observations and simulations in the evolution of the mass relation between supermassive black holes and their host galaxies
• BLR size in Realistic FRADO Model: The role of shielding effect
• Numerical Study on Outflows in Seyfert Galaxies I: Narrow Line Region Outflows in NGC 4151
• Constraints on the relative sizes of intervening Mg II-absorbing clouds and quasar emitting regions
• Resolving the nano-Hz gravitational wave sky: the detectability of eccentric binaries with PTA experiments
• Long-term multi-band photometric monitoring of Mrk 501
• SDSS J1058+5443: A blue quasar does not have optical/NUV broad emission lines
• Linear Spectropolarimetric Analysis of Fairall 9 with VLT/FORS2
• Black Hole Mass Estimation in Type 1 AGN: H$\beta$ vs. Mg II lines and the role of Balmer continuum
• The 'Big Dipper': The nature of the extreme variability of the AGN SDSS J2232-0806
• Robotic reverberation mapping of the broad-line radio galaxy 3C 120
• First observation of double-peaked O I emission in the near-infrared spectrum of an active galaxy
• Measuring the AGN sublimation radius with a new approach: reverberation mapping of the broad line polarization
• Dust Reverberation Mapping of Z229-15
• A systematic study of the ultra-fast outflow responses to luminosity variations in active galactic nuclei
• VLT/SINFONI study of black hole growth in high redshift radio-loud quasars from the CARLA survey
• Continuum reverberation mapping of MCG 08-11-011
• AGN Light Echoes and the Accretion Disc Self-Gravity Limit
• Estimating black hole masses: Accretion disk fitting versus reverberation mapping and single epoch
• SDSS J154751.94+025550 with double-peaked broad Hβbut single-peaked broad Hα: a candidate for central binary black hole system?
• Do all QSOs have the same black hole mass?
• The sizes of BLRs and BH masses of double-peaked broad low-ionization emission line objects
• Episodic Jets from Black Hole Accretion Disks
• Constraints on the radio loud/radio quiet dichotomy from the fundamental plane
• Photoionization Modelling of the Giant Broad-Line Region in NGC 3998
• X-ray time lags in PG 1211+143
• Line and Continuum Variability in Active Galaxies
• Medium-band Photometry Reverberation Mapping of Nearby Active Galactic Nuclei
• Discovery of the most luminous quasar of the last 9 Gyr
• Spectroscopic reverberation mapping of Quasar PKS 0736+017: Broad-Line Region and Black-hole Mass
• Modeling the UBVRI time delays in Mrk 335
• Central X-ray point-sources found to be abundant in low-mass, late-type galaxies predicted to contain an intermediate-mass black hole
• Investigating the radio-loud phase of broad absorption line quasars
• On the X-ray low- and high-velocity outflows in AGNs
• Connecting the X-ray/UV variability of Fairall 9 with NICER: A Possible Warm Corona
• Conditional Neural Process for non-parametric modeling of AGN light curve
• Assessing indirect methods to determine black hole masses using NGC 4151
• Complex optical/UV and X-ray variability in Seyfert 1 galaxy Mrk 509
• Reflection features in the X-ray spectrum of Fairall 9 and implications for tests of general relativity
• Applying wavelet analysis to the X-ray light curves of active galactic nuclei and quasi-periodic eruptions
• Blue, Green, and Red Bumps in AGN
• Constraining broad-line regions from time lags of broad emission lines relative to radio emission
• Near-Infrared Spectroscopy of Quasars at z~3 and Estimates of Their Supermassive Black Hole Masses
• Correlation between Line Width and Line Flux of Double-Peaked Broad Halpha of 3C390.3
• AT2018fyk: Candidate Tidal Disruption Event by a (Super)massive Black Hole Binary
• The quasar SDSS J142507.32+323137.4 : dual AGNs?
• Time Evolving Photo Ionisation Device (TEPID): a novel code for out-of-equilibrium gas ionisation
• Time-dependent photoionization spectroscopy of the Seyfert galaxy NGC 3783
• Multi-wavelength Variation Phenomena of PKS 0735+178 on Diverse Timescale
• A fast test for the identification and confirmation of massive black hole binaries
• Resolving the inner accretion flow towards the central supermassive black hole in SDSS J1339+1310
• Active Galaxies and the Study of Black Hole Demographics
• A candidate of binary black hole system in AGN with broad Balmer emission lines having quite different line widths
• Discovery of a new extreme changing-state quasar with 4 mag variation, SDSS J125809.31+351943.0
• Effect of accreting tidally disrupted stars on the spin evolution of $\sim 10^6{M}_{\odot }$ black holes
• The observability of plasmoid-powered $\gamma$-ray flares with the Fermi Large Area Telescope
• Properties of radio-loud quasars in Sloan Digital Sky Survey
• The Size, Structure and Ionization of the Broad Line Region in NGC 3227
• Characterising SMSS J2157--3602, the most luminous known quasar, with accretion disc models
• Analysis of the intra-night variability of BL Lacertae during its August 2020 flare
• The radio luminosity, black hole mass and Eddington ratio for quasars from the Sloan Digital Sky Survey
• Stacked reverberation lags at high redshift
• Exploring the Link between the X-ray Power Spectra and Energy Spectra of Active Galactic Nuclei
• The AGN Hubble Diagram and Its Implications for Cosmology
• Complex Optical/UV and X-ray Variability of the Seyfert 1 galaxy 1H 0419-577
• Far-Ultraviolet Spectroscopy Of Active Galactic Nuclei With AstroSat/UVIT
• Short time-scale X-ray spectral variability in the Seyfert 1 galaxy NGC 3783
• The long-term broad-line responsivity in MKN 110
• Toward Precision Measurement of Central Black Hole Masses
• Estimating black hole masses in obscured AGN using X-rays
• No Evidence for [O III] Variability in Mrk 142
• Geometric Distances of Quasars Measured by Spectroastrometry and Reverberation Mapping:Monte Carlo Simulations
• On measuring the Hubble constant with X-ray reverberation mapping of active galactic nuclei
• Frying Doughnuts: What can the reprocessing of X-rays to IR tell us about the AGN environment?
• First black hole mass estimation for the quadruple lensed system WGD2038-4008
• More Evidence for the Intermediate Broad Line Region of the Mapped AGN PG 0052+251
• Measuring the Virial Factor in SDSS DR5 Quasars with Redshifted H$\beta$ and Fe ii Broad Emission Lines
• Deconvolving X-ray Spectral Variability Components in the Seyfert 1.5 NGC 3227
• A Gaussian process cross-correlation approach to time delay estimation in active galactic nuclei
• Quasars with Anomalous Hβ Profiles I: Demographics
• Changing look AGN Mrk 590: Broad line region and black hole mass from photometric reverberation mapping
• A Closer Look at Two of the Most Luminous Quasars in the Universe
• In quest of axionic hairs in quasars
• The evolution of the UV/optical lag spectrum of NGC 7469 seen by the Liverpool Telescope
• Impact of the cosmic neutrino background on black hole superradiance
• A complex dust morphology in the high-luminosity AGN Mrk 876
• Observations of X-ray reverberation around black holes
• Variability of Broad Emission Lines in High-Luminosity,High-Redshift Quasars
• SALT long-slit spectroscopy of HE 0435-4312: fast displacement in the Mg II emission line
• Spectropolarimetry and spectral decomposition of high-accreting Narrow Line Seyfert 1 galaxies
• Intra-day variability of BL Lacertae from 2016 to 2018
• An X-ray Bright Nucleus in the Low Surface Brightness Galaxy UGC 6614
• Quasar Host Galaxies in the FORS Deep Field
• Unveiling the quasar main sequence: illuminating the complexity of active galactic nuclei and their evolution
• Spectroscopic AGN survey at $z$ $\sim$ 2 with NTT/SOFI for GRAVITY+ observations
• Examining AGN UV/Optical Variability Beyond the Simple Damped Random Walk. II. Insights from 22 Years Observations of SDSS, PS1 and ZTF
• The Sloan Digital Sky Survey Reverberation Mapping Project: Photometric g and i Light Curves
• Long-term variability of the composite galaxy SDSS J103911-000057: A candidate of true Type-2 AGN
• Determining Quasar Orientation
• A stratified jet model for AGN emission in the two-flow paradigm
• Strong Lensed QSOs with Variability Detectable by LSST: How many are there?
• Spectroastrometry and Reverberation Mapping of Active Galactic Nuclei. II. Measuring Geometric Distances and Black Hole Masses of Four Nearby Quasars
• Spectral Evolution of Ultraluminous X-ray Pulsar NGC 300 ULX-1
• Spectroscopic monitoring of the candidate tidal disruption event in F01004-2237
• AGN STORM 2: I. First results: A Change in the Weather of Mrk 817
• Study of variability in long-term multiwavelength optical lightcurves of blazar AO 0235+164
• The ${\sigma }_{\mathrm{H}\beta }$-based dimensionless accretion rate and its connection with the corona for AGN
• Mass of the black hole in the Seyfert 1.5 galaxy H 0507+164 from reverberation mapping
• Inflowing Gas in the Central Parsec of M81
• Are broad optical balmer lines from central accretion disk in PG 1613+658?
• Composite reverberation mapping
• Temperature Profiles of Accretion Disks in Luminous Active Galactic Nuclei derived from Ultraviolet Spectroscopic Variability
• Time lag in transient cosmic accreting sources
• Photometric reverberation mapping of AGNs at 0.1 < z < 0.8: I. Observational technique
• Application of the FRADO model of BLR formation to the Seyfert galaxy NGC 5548 and the first step toward determining the Hubble constant
• Ensemble Variability Properties of Active Galactic Nuclei in the SDSS DR17
• Spectral variability studies in Active Galactic Nuclei: Exploring continuum and emission line regions in the age of LSST and JWST
• The hypothesis of the dust origin of the Broad Line Region in Active Galactic Nuclei
• The Broad Line Region in NGC 4051: An Inflow Illuminated by a 10^5 K Accretion Disk
• The Quasar Mass-Luminosity Plane III: Smaller Errors on Virial Mass Estimates
• Investigating the Disk-Corona Relation in a Blue AGN Sample
• Broadband spectral and temporal study of Ton 599 during the brightest January 2023 flare
• The variability of the broad-line Balmer decrement for quasars from the Sloan Digital Sky Survey Reverberation Mapping
• High-$z$ Universe probed via Lensing by QSOs (HULQ) I. Number Estimates of QSO-QSO and QSO-Galaxy Lenses
• Evolution of the Outflows in NGC 3516
• Constraints on black hole spins with a general relativistic accretion disk corona model
• Accretion disc reverberation mapping in a high-redshift quasar
• Line shape variability in a sample of AGN with broad lines
• Combined Analysis of X-Ray Spectra of NGC 3227
• The Great Slump: Mrk926 reveals discrete and varying Balmer line satellite components during a drastic phase of decline
• Long-term Swift and Metsähovi monitoring of SDSS J164100.10+345452.7 reveals multi-wavelength correlated variability
• A Pixon-Based Method for Reverberation-mapping Analysis in Active Galactic Nuclei
• Multiwavelength campaign on Mrk 509. XVI. Continued HST/COS monitoring of the far-ultraviolet spectrum
• Variable Intrinsic Absorption in Mrk 279
• Optical spectral index - luminosity relation for the 17 mapped Palomar-Green quasars
• Medium Resolution Near-Infrared Spectra of the Host Galaxies of Nearby Quasars
• Measuring the Virial Factor in SDSS DR7 AGNs with Redshifted H$\beta$ and H$\alpha$ Broad Emission Lines
• Measurement of the supermassive black hole masses in two active galactic nuclei by the photometric reverberation mapping method
• Differential interferometry of close binary of supermassive black holes in an elliptical configuration
• Influence of Comptonization region over the ambiance of accretion disc in Active Galactic Nucleus
• Diagnostics of the structure of AGN's broad line regions with reverberation mapping data: confirmation of the two-component broad line region model
• The Wind Dynamics of Super-Eddington Sources in FRADO
• AGN Reverberation Mapping
• XMM-Newton --NuSTAR monitoring campaign of the Seyfert 1 galaxy IC 4329A
• Unveiling the monster heart: unbeamed properties of blazar 4C 71.07
• Exploring Dark Forces with Multimessenger Studies of Extreme Mass Ratio Inspirals
• Probing the Extent of Fe K$\alpha$ Emission in Nearby Active Galactic Nuclei using Multi-Order Analysis of Chandra High Energy Transmission Grating Data
• X-ray Eclipses of Active Galactic Nuclei
• Optical monitoring of the z=4.40 quasar Q 2203+292
• Long-term optical and $\gamma -$ray variability of the blazar PKS~1222+216
• Revisiting Emission-Line Measurement Methods for Narrow-Line Active Galactic Nuclei
• Searching for Low-Redshift Hot Dust-Obscured Galaxies
• Broad Band X-ray Constraints on the Accreting Black Hole in Quasar 4C 74.26
• Signatures of regular black holes from the quasar continuum spectrum
• Quasar Host Galaxies and the $M_{SMBH}$ - ${\sigma }_{\ast }$ Relation
• A Systematic Study of the Short-Term X-ray Variability of Seyfert Galaxies I. Diversity of the X-ray Rms Spectra
• Relativistic Reflection Modeling in AGN and Related Variability from PCA: A Brief Review
• On Variation of Light Curves and Broad Emission Lines for Periodic QSOs from co-rotating Supermassive binary black holes in elliptical orbits
• Spectropolarimetry of NGC3783 and Mrk509: Evidence for powerful nuclear winds in Seyfert 1 Galaxies
• An optical perspective on early-stage AGN with extreme radio flares
• Detection of highly correlated optical and X-ray variations in SS Cygni with Tomo-e Gozen and NICER
• Quasars and their host galaxies
• On reverberation and cross-correlation estimates of the size of the broad-line region in active galactic nuclei
• RBS1423 - a new QSO with relativistic reflection from an ionised disk
• Effects of ultra-fast outflows on X-ray time lags in AGN
• Revisiting Correlations Between Broad-Line and Jet Emission Variations for AGNs: 3C 120 and 3C 273
• Detection techniques for the H.E.S.S. II telescope, data modeling of gravitational lensing and emission of blazars in HE-VHE astronomy
• Understanding the AGN-Host Connection in Broad Mgii Emission Selected AGN-Host Hybrid Qausars
• Quasars' Optical Polarization and Balmer Edge Feature Revealed by Ultra-Violet, and Polarized Visible to Near Infrared Emissions
• The Rate of Gas Accretion onto Black Holes Drives Jet Velocity
• Standardizing reverberation-measured Mg II time-lag quasars, by using the radius-luminosity relation, and constraining cosmological model parameters
• Spectral Energy Distribution Variations of Nearby Seyfert Galaxies During AGN Watch Monitoring Programs
• H$\beta$ line shape and radius-luminosity relation in 2.5D FRADO
• Mathematical general relativity: a sampler
• The Integrated Relativistic Iron Line from Active Galactic Nuclei: Chasing the Spin Evolution of Supermassive Black Holes
• Inferences on relations between distant supermassive black holes and their hosts complemented by the galaxy fundamental plane
• Comparing Reflection and Absorption Models for the Soft X-ray Variability in the NLS1 AGN UGC 11763
• HALO I: Photometric continuum reverberation mapping of Fairall 9
• A Systematic Search for X-ray Eclipse Events in Active Galactic Nuclei Observed by Swift
• The Galaxy Activity, Torus, and Outflow Survey (GATOS). Black hole mass estimation using machine learning
• Active Galaxies in the UV
• Uncertainty Quantification of the Virial Black Hole Mass with Conformal Prediction
• Polarimetric Reverberation Mapping in Medium-Band Filters
• Hints of correlation between broad-line and radio variations for 3C 120
• Revisiting the Continuum Reverberation Lags in the AGN PKS 0558-504
• Effects of Biases in Virial Mass Estimation on Cosmic Synchronization of Quasar Accretion
• Black Hole masses for 14 gravitational lensed quasars
• Estimating black hole masses of blazars
• Rarefied Broad-Line Regions in Active Galactic Nuclei: Anomalous Responses in Reverberation Mapping and Implications for Weak Emission-Line Quasars
• Variations of Broad Emission Lines from periodicity QSOs under the interpretation of supermassive binary black holes with misaligned circumbinary broad line regions
• Modelling the variable broad-band optical/UV/X-ray spectrum of PG1211+143: Implications for the ionized outflow
• partly obscured accretion disk model to explain Shifted broad Balmer emission lines of Active Galactic Nuclei
• The dynamics of the broad-line region in NGC 3227
• Multiwavelength Monitoring of the Dwarf Seyfert 1 Galaxy NGC 4395. IV. The Variable UV Absorption Lines
• Constraints on Galaxy Structure and Evolution from the Light of Nearby Systems
• Kinematics and Structure of Clumps in Broad-line Regions in Active Galactic Nuclei
• The role of failed accretion disk winds in active galactic nuclei
• Extracting the X-ray reverberation response functions from the AGN light curves using an autoencoder
• Quasar Main Sequence unfolded by 2.5D FRADO (Natural expression of Eddington ratio, black hole mass, and inclination)
• A physical model for radiative, convective dusty disk in AGN
• HARMONI view of the host galaxies of active galactic nuclei around cosmic noon: Resolved stellar morpho-kinematics and the M${}_{BH}$-${\sigma }_{\star }$ relation
• Mg II line properties in lobe-dominated quasars
• Magnetic Reconnection as a Potential Driver of X-ray Variability in Active Galactic Nuclei
• The properties of optical FeII emission lines of AGN with double-peaked broad emission lines
• Can a time evolving, asymmetric broad line region mimic a massive black hole binary?
• Spectroscopy of bright quasars: emission lines and internal extinction
• Ultradense Gases beyond Dusty Torus in a Partially Obscured Quasar
• Flares in the Changing Look AGN Mrk 590. II: Deep X-ray observations reveal a Comptonizing inner accretion flow
• The UV/optical Continuum Reverberation Mapping of Eight Active Galactic Nuclei with Swift: Further Evidence for the Outer Component
• Non-detection of Broad Hydrogen Radio Recombination Lines in Circinus Galaxy
• The broad band SEDs of four 'hypervariable' AGN
• Long Term Reverberation Mapping of Iron Coronal Lines in MKN 110
• Amoeba: An AGN Model of Optical Emissions Beyond steady-state Accretion discs
• Techniques for Profile Binning and Analysis of Eigenvector Composite Spectra: Comparing Hbeta and MgII 2800 as Virial Estimators
• The first spectroscopic IR reverberation programme on Mrk 509
• Intensive X-ray/UVOIR continuum reverberation mapping of the Seyfert AGN MCG+08-11-11
• Line Shapes Emitted from Spiral Structures around Symmetric Orbits of Supermassive Binary Black Holes
• Overmassive and Undermassive Massive Black Holes: The Role of Environment and Gravitational-Wave Recoils
• Precursors in tidal disruption events: repeating, fast, and AGN-hosted TDEs
• PHL 6625: A Minor Merger-Associated QSO Behind NGC 247
• Relentless multi-wavelength variability of Mrk 421 and Mrk 501
• The Future of Direct Supermassive Black Hole Mass Estimates
• Hunting for the nature of the enigmatic narrow-line Seyfert 1 galaxy PKS 2004-447
• Multi-wavelength variability analysis of the blazar S5 0716+714 during a long-lasting period of low activity
• Gamma-ray flares from the jet of the blazar CTA 102 in 2016-2018
• A detailed spectroscopic study of Tidal Disruption Events
• The Sloan Digital Sky Survey Reverberation Mapping Project: UV-Optical Accretion Disk Measurements with Hubble Space Telescope
• Comparison between the influence of outflows and supermassive binary black holes in active galactic nuclei on the polarization angle profiles
• A redshifted excess in the broad emission lines after the flare of the $\gamma$-ray narrow-line Seyfert 1 PKS 2004-447
• Wide Field Multiband Imaging of Low Redshift Quasar Environments
• The resolved jet of 3C 273 at 150 MHz
• Reverberation Mapping of Two Luminous Quasars: the Broad-line Region Structure and Black Hole Mass
• SINFONI's take on Star Formation, Molecular Gas, and Black Hole Masses in AGN
• Identification of quasars variable over long time scales from infrared surveys. Ensemble variability and structure function properties
• AGN evolution from large and deep X-ray surveys
• Fourier spectral-timing techniques for the study of accreting black holes
• Application of the space-based optical interferometer towards measuring cosmological distances of quasars
• Search of Intermediate Mass Black Holes at Low Redshift with Intra-night Variability
• Quasar continuum spectrum disfavors black holes with a magnetic monopole charge
• Probing Quasar Viewing Angle with the Variability Structure Function
• Uncertainties of the masses of black holes and Eddington ratios in AGN
• High-$z$ Universe probed via Lensing by QSOs (HULQ) II. Deep GMOS spectroscopy of a QSO lens candidate
• Ionization Distributions in Outflows of Active Galaxies: Universal Trends and Prospect of Future XRISM Observations
• Correcting the Contamination of Second-order Spectra: Improving Hα Measurements in Reverberation Mapping Campaigns
• Massive black holes and their galaxies
• A magnetically-supported disk-corona model for Changing-Look AGN transitions
• The study of the circumnuclear environment of accreting supermassive black holes with realistic X-ray spectral models
• SDSS J153231.80+420342.7: a triple black hole candidate with a close binary black hole
• Dusty origin of the Broad Line Region in active galaxies
• Emission-Line and Continuum Reverberation Mapping of the NLS1 Galaxy WPVS 48
• Accretion-disk reflection in the Seyfert 1 galaxy NGC 3783 as viewed by Chandra grating spectroscopy
• A constant pressure model for the warm absorber in Mrk 509
• Measuring monster MBHs: maybe mighty, maybe merely massive
• Quasar Mass Functions Across Cosmic Time
• Self-consistent dynamical model of the Broad Line Region