Nuclear Activity in Nearby Galaxies

Abstract

A significant fraction of nearby galaxies show evidence of weak nuclear activity unrelated to normal stellar processes. Recent high-resolution, multiwavelength observations indicate that the bulk of this activity derives from black hole accretion with a wide range of accretion rates. The low accretion rates that typify most low-luminosity active galactic nuclei induce significant modifications to their central engine. The broad-line region and obscuring torus disappear in some of the faintest sources, and the optically thick accretion disk transforms into a three-component structure consisting of an inner radiatively inefficient accretion flow, a truncated outer thin disk, and a jet or outflow. The local census of nuclear activity supports the notion that most, perhaps all, bulges host a central supermassive black hole, although the existence of active nuclei in at least some late-type galaxies suggests that a classical bulge is not a prerequisite to seed a nuclear black hole.

To appear in Annual Reviews of Astronomy and Astrophysics (2008). 76 pages

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• Broad Band X-Ray Spectra of Two Low-luminosity Active Galactic Nuclei NGC 1566 and NGC 4941
• The supermassive black hole coincident with the luminous transient ASASSN-15lh
• Application of the Disk Evaporation Model to AGNs
• Radio activity of supermassive black holes with extremely high accretion rates
• AGN feedback in elliptical galaxies: numerical simulations
• X-ray Point Sources and Radio Galaxies in Clusters of Galaxies
• The Landscape of Galaxies Harboring Changing-Look Active Galactic Nuclei in the Local Universe
• Revolutionizing Our Understanding of AGN Feedback and its Importance to Galaxy Evolution in the Era of the Next Generation Very Large Array
• AGN spectral states from simultaneous UV and X-ray observations by XMM-Newton
• Modelling narrow-line regions of active galaxies in the Sloan Digital Sky Survey - I.Sample selection and physical conditions
• Star Formation in Nearby Early-Type Galaxies: The Radio Continuum Perspective
• Ionised Gas Kinematics in MaNGA AGN. Extents of the Narrow Line and Kinematically Disturbed regions
• Probing the Origin of Changing-look Quasar Transitions with Chandra
• Recalibration of [O II] $\lambda 3727$ as a Star Formation Rate Estimator for Active and Inactive Galaxies
• The imprints of AGN feedback within a supermassive black hole's sphere of influence
• Infrared Contributions of X-Ray Selected Active Galactic Nuclei in Dusty Star-Forming Galaxies
• Milliarcsec-scale radio emission of ultraluminous X-ray sources: steady jet emission from an intermediate-mass black hole?
• The Mid-infrared Emission of Narrow-Line Active Galactic Nuclei: Star-Formation, Nuclear Activity and two populations revealed by WISE
• Constraining Photoionization Models With a Reprojected Optical Diagnostic Diagram
• RESOLVE and ECO: Finding Low-Metallicity $z\sim 0$ Dwarf AGN Candidates Using Optimized Emission-Line Diagnostics
• Growing Massive Black Holes in a Local Group Environment: the Central Supermassive, Slowly Sinking, and Ejected Populations
• The radio emission from Active Galactic Nuclei
• The Diverse Morphology, Stellar Population, and Black Hole Scaling Relations of the Host Galaxies of Nearby Quasars
• The spatial extension of extended narrow line regions in MaNGA AGN
• The Role of Active Galactic Nuclei in the Quenching of Massive Galaxies in the SQuiGGLE Survey
• The Eddington ratio-dependent changing look events in NGC 2992
• NuSTAR Hard X-ray View of Low-luminosity Active Galactic Nuclei: High-energy Cutoff and Truncated Thin Disk
• NuSTAR unveils a heavily obscured low-luminosity Active Galactic Nucleus in the Luminous Infrared Galaxy NGC 6286
• Clumpy accretion onto black holes. I. Clumpy-ADAF structure and radiation
• A New Method to Measure Star Formation Rates in Active Galaxies Using Mid-infrared Neon Emission Lines
• Towards Precision Supermassive Black Hole Masses using Megamaser Disks
• Discovery of Hot Gas in Outflow in NGC3379
• Possible Origin of Radio Emission from Nonthermal Electrons in Hot Accretion Flows for Low-Luminosity Active Galactic Nuclei
• X-ray binary accretion states in Active Galactic Nuclei? Sensing the accretion disc of supermassive black holes with mid-infrared nebular lines
• Hundreds of Low-Mass Active Galaxies in the Galaxy And Mass Assembly (GAMA) Survey
• Hints on the gradual re-sizing of the torus in AGN by decomposing IRS/Spitzer spectra
• Fundamental Plane of Black Hole Activity in Quiescent Regime
• Accretion Properties of A Sample of Hard X-ray (<60keV) Selected Seyfert 1 Galaxies
• WISE view of changing-look AGNs: evidence for a transitional stage of AGNs
• The mass fraction of AGN and the Fundamental Plane of black hole activity from a large X-ray selected sample of LINERs
• Spectroscopic aperture biases in inside-out evolving early-type galaxies from CALIFA
• An off-centered active galactic nucleus in NGC 3115
• Exploring Accretion and Disk-Jet Connections in the LLAGN M81*
• Accurate classification of 75 counterparts of objects detected in the 54 month Palermo Swift/BAT hard X-ray catalogue
• Global Compton heating and cooling in hot accretion flows
• X-ray properties expected from AGN feedback in elliptical galaxies
• X-ray and multiwavelength view of NGC 4278. A LINER-Seyfert connection?
• An X-ray and UV flare from the galaxy XMMSL1 J061927.1-655311
• Chemical Abundances in Active Galaxies
• The Cosmic Battery in Astrophysical Accretion Disks
• Feedback from central black holes in elliptical galaxies. II: Can purely mechanical energy feedback models work?
• The MASSIVE Survey VI: The Spatial Distribution and Kinematics of Warm Ionized Gas in the Most Massive Local Early-type Galaxies
• Revisit the fundamental plane of black-hole activity from sub-Eddington to quiescent state
• Radiative heating in the kinetic mode of AGN feedback
• SDSS-IV MaNGA: The Roles of AGNs and Dynamical Processes in Star Formation Quenching in Nearby Disk Galaxies
• Galaxies Correlating with Ultra-high Energy Cosmic Rays
• A GMRT Study of Seyfert Galaxies NGC4235 & NGC4594: Evidence of Episodic Activity ?
• AGN activity and the misaligned hot ISM in the compact radio elliptical NGC4278
• Different X-ray spectral evolution for black hole X-ray binaries in dual tracks of radio-X-ray correlation
• Evolution of active galactic nuclei
• Gamma-ray observations of low-luminosity active galactic nuclei
• The role of the accretion disk, dust, and jets in the IR emission of low-luminosity AGN
• A Chandra Survey of Supermassive Black Holes with Dynamical Mass Measurements
• A Quasar-Galaxy Mixing Diagram: Quasar Spectral Energy Distribution Shapes in the Optical to Near-Infrared
• A Systematic Analysis of Stellar Populations in the Host Galaxies of Changing-look AGNs
• Hot accretion flow with radiative cooling: state transitions in black hole X-ray binaries
• Discovery of an active supermassive black hole in the bulge-less galaxy NGC 4561
• Properties of Accretion Flows Around Coalescing Supermassive Black Holes
• Observing Supermassive Black Holes across cosmic time: from phenomenology to physics
• On the Evolution of the Cores of Radio Sources and Their Extended Radio Emission
• SDSS J1056+5516: A Triple AGN or an SMBH Recoil Candidate?
• Stellar age gradients and inside-out star formation quenching in galaxy bulges
• Near-infrared observations of star formation and gas flows in the NUGA galaxy NGC 1365
• Active Galactic Nuclei: Boon or Bane for Biota?
• The Star-forming Main Sequence of the Host Galaxies of Low-redshift Quasars
• VLBI Imaging of the Double Peaked Emission Line Seyfert KISSR1494
• The Interaction between AGN and Starburst Activity in the Circumnuclear Region of NGC 7469 as Viewed with JWST
• Suzaku Studies of the Central Engine in the Typical Type I Seyfert NGC 3227: Detection of Multiple Primary X-ray Continua with Distinct Properties
• Tidal disruption events from eccentric orbits and lessons learned from the noteworthy ASASSN-14ko
• The SEDs, Host Galaxies and Environments of Variability Selected AGN in GOODS-S
• Detection of a Parsec-Scale Jet in a Radio-Quiet Narrow-Line Seyfert 1 Galaxy with Highly Accreting Supermassive Black Hole
• A Chandra and HST View of WISE-Selected AGN Candidates in Dwarf Galaxies
• Welcome to the Twilight Zone: The Mid-Infrared Properties of Poststarburst Galaxies
• A Curved 150 Parsec Long Jet in the Double-Peaked Emission-Line AGN KISSR 434
• The Different Nature in Seyfert 2 Galaxies With and Without Hidden Broad-Line Regions
• On the origin of the soft photons of the high synchrotron peaked blazar : PKS 1424+240
• In-situ star formation in accretion disk and explanation for correlation between black hole mass and metallicity in AGNs
• Observable signatures of stellar-mass black holes in active galactic nuclei
• A Chandra X-ray Survey of Optically Selected AGN Pairs
• The relation of optical/UV and X-ray emission in low-luminosity active galactic nuclei
• Optical Emission Model for Binary Black Hole Merger Remnants Travelling through Discs of Active Galactic Nuclei
• The connection between star formation and supermassive Black Hole activity in the local Universe
• General-relativistic model of hot accretion flows with global Compton cooling
• Radiative Properties of Magnetically-Arrested Disks
• Mapping Seyfert and LINER Excitation Modes in the Inner kpc of NGC 3393
• A Potential Recoiling Supermassive Black Hole CXO J101527.2+625911
• Outflows of hot molecular gas in ultra-luminous infra-red galaxies mapped with VLT-SINFONI
• Evidence that Shocks Destroy Small PAH Molecules in Low-luminosity Active Galactic Nuclei
• Evolution of [OIII]5007 emission-line profiles in narrow emission-line galaxies
• Ionized Outflows in Nearby Quasars are Poorly Coupled to their Host Galaxies
• Ionized gas kinematics within the inner kiloparsec of the Seyfert galaxy NGC 1365
• LeMMINGs. III. The e-MERLIN Legacy Survey of the Palomar sample. Exploring the origin of nuclear radio emission in active and inactive galaxies through the [O III] -- radio connection
• The continuous rise of bulges out of galactic disks
• The relationship between X-ray and optical absorbers in active galactic nuclei
• Two-Temperature GRMHD Simulations of Black Hole Accretion Flows with Multiple Magnetic Loops
• Accretion Properties of High- and Low-Excitation Young Radio Galaxies
• $NuSTAR$ Observations of Four Nearby X-ray Faint AGN: Low Luminosity or Heavy Obscuration?
• Exploring the accretion model of M87 and 3C 84 with the Faraday rotation measure observations
• Measuring the level of nuclear activity in Seyfert galaxies and the unification scheme
• An accretion-jet model for M87: interpreting the spectral energy distribution and Faraday rotation measure
• Zooming into local active galactic nuclei: The power of combining SDSS-IV MaNGA with higher resolution integral field unit observations
• Chandra Survey of Nearby Galaxies: Testing the Accretion Model for Low-luminosity AGNs
• An embedded active nucleus in the OH megamaser galaxy IRAS16399-0937
• Infrared and X-Ray Evidence of an AGN in the NGC 3256 Southern Nucleus
• An Off-Nucleus Nonstellar Black Hole in the Seyfert Galaxy NGC 5252
• IFU spectroscopy of 10 early-type galactic nuclei - III. Properties of the circumnuclear gas emission
• Enhanced Star Formation Efficiency in the Central Regions of Nearby Quasars Hosts
• Gas Accretion in the M32 Nucleus: Past & Present
• The PG-RQS survey. Building the radio spectral distribution of radio-quiet quasars. I. The 45-GHz data
• Impact of an AGN featureless continuum on estimation of stellar population properties
• A comparison between the soft X-ray and [O III] morphologies of active galactic nuclei
• Accretion disk wind as explanation for the broad-line region structure in NGC 5548
• Outflows, Shocks and Coronal Line Emission in a Radio-Selected AGN in a Dwarf Galaxy
• Evidence for AGN-driven Outflows in Young Radio Quasars
• The fundamental plane of black hole activity for low-luminosity radio active galactic nuclei across 1 < z < 4
• Global dynamics of advection-dominated accretion flows with magnetically driven outflow
• Unexplored outflows in nearby low luminosity AGNs: the case of NGC 1052
• The Ionization and Destruction of Polycyclic Aromatic Hydrocarbons in Powerful Quasars
• NGC5252: a pair of radio-emitting active galactic nuclei?
• Nuclear Spiral Shocks and Induced Gas Inflows in Weak Oval Potentials
• Particle Diffusion and Acceleration in Magnetorotational Instability Turbulence
• Is IRAS 01072+4954 a True-Seyfert 2? Hints from Near Infrared Integral Field Spectroscopy
• Hunting for wandering massive black holes
• Radio-mode feedback in local AGNs: dependence on the central black hole parameters
• Probing the Active Massive Black Hole Candidate in the Center of NGC 404 with VLBI
• Newtonian analogue of corresponding spacetime dynamics of rotating black holes: Implication on black hole accretion
• IFU spectroscopy of 10 early type galactic nuclei: II - Nuclear emission line properties
• Black holes regulate cool gas accretion in massive galaxies
• An extended size-luminosity relation for the reverberation-mapped AGNs: the role of the accretion rate
• The filamentary radio lobes of the Seyfert-Starburst composite galaxy NGC3079
• Discovery of a Luminous Radio Transient 460 pc from the Central Supermassive Black Hole in Cygnus A
• AGN Feedback in Quiescent Galaxies at Cosmic Noon Traced by Ionized Gas Emission
• The Dynamics of Truncated Black Hole Accretion Disks II: Magnetohydrodynamic Case
• Green Peas in X-rays
• Transition of BH feeding from the quiescent regime into star-forming cold disk regime
• Systematic Broad-band X-ray Study of super-Eddington Accretion onto Supermassive Black Holes. I. X-ray Continuum
• On the disappearance of broad-line region in low-luminosity active galactic nuclei: the role of the outflows from advection dominated accretion flows
• Do Radio Active Galactic Nuclei Reflect X-ray Binary Spectral States?
• BH Accretion in Low-Mass Galaxies Since z~1
• On the wind production from hot accretion flows with different accretion rates
• The disk evaporation model for the spectral features of low-luminosity active galactic nuclei
• A luminous hot accretion flow in the low-luminosity active galactic nucleus NGC 7213
• Discovery of Very-high-energy Gamma-ray Emissions from the Low Luminosity AGN NGC 4278 by LHAASO
• Revisiting the structure and spectrum of the magnetic-reconnection-heated corona in luminous AGNs
• LeMMINGs IV: The X-ray properties of a statistically-complete sample of the nuclei in active and inactive galaxies from the Palomar sample
• Evidence for A Hot Wind from High-resolution X-ray Spectroscopic Observation of the Low-luminosity Active Galactic Nucleus in NGC 7213
• The SED of Low-Luminosity AGNs at high-spatial resolution
• Upper boundaries of AGN regions in optical diagnostic diagrams
• An Analysis Framework for Understanding the Origin of Nuclear Activity in Low-Power Radio Galaxies
• The Second Nucleus of NGC 7727: Direct Evidence for the Formation and Evolution of an Ultracompact Dwarf Galaxy
• An Elusive Population of Massive Disk Galaxies Hosting Double-lobed Radio-loud AGNs
• Compact jets dominate the continuum emission in low-luminosity active galactic nuclei
• The AGN Ionization Cones of NGC 5728 : II - Kinematics
• AGN Feedback Through Multiple Jet Cycles in the Seyfert Galaxy NGC 2639
• Double-Peaked Emission Lines due to A Radio Outflow in KISSR1219
• Early-type galaxies in the Chandra COSMOS Survey
• Chandra X-ray and Hubble Space Telescope Imaging of Optically Selected Kiloparsec-Scale Binary Active Galactic Nuclei II: Host Galaxy Morphology and AGN Activity
• The Structure and Spectral Features of a Thin Disk and Evaporation-Fed Corona in High-Luminosity AGNs
• Red Misfits in the Sloan Digital Sky Survey: Properties of Star-forming Red Galaxies
• On the disappearance of a cold molecular torus around the low-luminosity active galactic nucleus of NGC 1097
• Star formation and AGN activity in the most luminous LINERs in the local universe
• HI galaxies with little star formation: an abundance of LIERs
• The supermassive black hole and double nucleus of the core elliptical NGC5419
• Unveiling the physics of low luminosity AGN through X-ray variability: LINER versus Seyfert 2
• Universal transition diagram from dormant to actively accreting supermassive black holes
• Circumnuclear Media of Quiescent Supermassive Black Holes
• Optical and near-infrared IFU spectroscopy of the nuclear region of the AGN-starburst galaxy NGC 7582
• SN 1986J VLBI. IV. The Nature of the Central Component
• The radio detection and accretion properties of the peculiar nuclear transient AT 2019avd
• An X-ray + Radio Search for Massive Black Holes in Blue Compact Dwarf Galaxies
• SDSS1335+0728: The awakening of a $\sim 10^6{M}_{\odot }$ black hole
• Active galactic nuclei synapses: X-ray versus optical classifications using artificial neural networks
• Oxygen abundances in the narrow line regions of Seyfert galaxies and the metallicity-luminosity relation
• A Compact Jet at the Infrared Heart of the Prototypical Low-Luminosity AGN in NGC 1052
• Mapping the "invisible" circumgalactic medium around a z $\sim$ 4.5 radio galaxy with MUSE
• Formation of episodic jets and associated flares from black hole accretion systems
• Low-Mass Active Galactic Nuclei with Rapid X-Ray Variability
• Warping of accretion disk and launching of jet by a spinning black hole in NGC 4258
• NGC 7097: the AGN and its mirror, revealed by PCA Tomography
• Integral Field Spectroscopy of the inner kpc of the elliptical galaxy NGC 5044
• X-ray Properties of Radio-Selected Dual Active Galactic Nuclei
• Mapping Excitation in the Inner Regions of the Planetary Nebula NGC 5189 using HST WFC3 Imaging
• Spatially resolved BPT mapping of nearby Seyfert 2 galaxies
• A Cigale module tailored (not only) for Low-Luminosity AGN
• Bhjet: a public multi-zone, steady state jet + thermal corona spectral model
• An H$\alpha$/X-ray orphan cloud as a signpost of the intracluster medium clumping
• A decades-long fast-rise-exponential-decay flare in low-luminosity AGN NGC 7213
• HST emission-line images of nearby 3CR radio galaxies: two photoionization, accretion and feedback modes
• Breaking degeneracy in jet dynamics: multi-epoch joint modelling of the BL Lac PKS 2155-304
• The Widespread Presence of Nanometer-size Dust Grains in the Interstellar Medium of Galaxies
• The dearth of difference between central and satellite galaxies II. Comparison of observations with L-GALAXIES and EAGLE in star formation quenching
• Some Die Filthy Rich: The Diverse Molecular Gas Contents of Post-starburst Galaxies Probed by Dust Absorption
• Broadband X-ray Spectral Analysis of the Double-Nucleus Luminous Infrared Galaxy Mrk 463
• Intermediate-mass black holes: finding of episodic, large-scale and powerful jet activity in a dwarf galaxy
• Classifying the full SDSS-IV MaNGA Survey using optical diagnostic diagrams: presentation of AGN catalogs in flexible apertures
• Black Holes Up Close
• Survey of Radiative, Two-Temperature Magnetically Arrested Simulations of the Black Hole M87* I: Turbulent Electron Heating
• Activity in Galactic Nuclei of Compact Group Galaxies in the Local Universe
• Constraints on UHECR sources and extragalactic magnetic fields from directional anisotropies
• A New Channel of Bulge Formation via The Destruction of Short Bars
• A High Fraction of Double-peaked Narrow Emission Lines in Powerful Active Galactic Nuclei
• AGN Activity and Black Hole Masses in Low Surface Brightness Galaxies
• From radio-quiet to radio-silent: low luminosity Seyfert radio cores
• Resolving the X-ray emission from the Lyman continuum emitting galaxy Tol 1247-232
• Years Delayed Gamma-ray and Radio Afterglows Originated from TDE Wind-Torus Interactions
• Local Active Galactic Nuclei with Large Broad-Hα Variability Reside in Red Galaxies
• A Wide and Deep Exploration of Radio Galaxies with Subaru HSC (WERGS). IV. Rapidly Growing (Super-)Massive Black Holes in Extremely Radio-Loud Galaxies
• The Relation between Morphological Asymmetry and Nuclear Activity in Low-redshift Galaxies
• The off-centered Seyfert-like compact emission in the nuclear region of NGC 3621
• Infrared-red Cores in Nearby Elliptical Galaxies
• Investigating the Unification of LOFAR-detected powerful AGN in the Boötes Field
• Mass and Environment as Drivers of Galaxy Evolution. IV. On the Quenching of Massive Central Disk Galaxies in The Local Universe
• Discovery of Limb Brightening in the Parsec-scale Jet of NGC 315 through Global Very Long Baseline Interferometry Observations and Its Implications for Jet Models
• Properties of the Obscuring Torus in NGC 1052 from Multi-epoch Broadband X-ray Spectroscopy
• Formation of the Little Red Dots from the Core-collapse of Self-interacting Dark Matter Halos
• Looking for Signatures of AGN Feedback in Radio-Quiet AGN
• Mildly Suppressed Star Formation in Central Regions of MaNGA Seyfert Galaxies
• Centrally Concentrated X-ray Radiation from an Extended Accreting Corona in Active Galactic Nuclei
• Variability-selected low-luminosity active galactic nuclei candidates in the 7 Ms Chandra Deep Field-South
• Steep-Spectrum Radio Emission from the Low-Mass Active Galactic Nucleus GH 10
• Observational evidence for AGNs feedback at parsec scale
• Effect of richness on AGN and star formation activities in SDSS galaxy groups
• A search for ionised gas outflows in an Halpha imaging atlas of nearby LINERs
• The XXL Survey XIX. A realistic population of simulated X-ray AGN: Comparison of models with observations
• Adiabatic Index in Fluid Models of Collisionless Black Hole Accretion
• The Effects of Magnetic Field Strength on Properties of Wind Generated from Hot Accretion Flow
• A search of CO emission lines in blazars: the low molecular gas content of BL Lac objects compared to quasars
• AGN and quasar science with aperture masking interferometry on the James Webb Space Telescope
• A Comprehensive Archival Chandra Search for X-ray Emission from Ultracompact Dwarf Galaxies
• What produces the extended LINER-type emission in the NUGA galaxy NGC 5850?
• Internal gamma gamma-opacity in Active Galactic Nuclei and the consequences for the TeV observations of M87 and Cen A
• Possible Evidence of a Universal Radio/X-ray Correlation in a near-Complete Sample of Hard X-ray Selected Seyfert Galaxies
• Mid-Infrared Outbursts in Nearby Galaxies: Nuclear Obscuration and Connections to Hidden Tidal Disruption Events and Changing-Look Active Galactic Nuclei
• An X-ray Census of Fast Radio Burst Host Galaxies: Constraints on AGN and X-ray Counterparts
• Testing the linear relationship between black hole mass and variability timescale in low-luminosity AGN at submillimeter wavelengths
• The first all-sky survey of star-forming galaxies with eROSITA: Scaling relations and a population of X-ray luminous starbursts
• Multiple Flares in the Changing-Look AGN NGC 5273
• Inside-out star formation quenching and the need for a revision of bulge-disk decomposition concepts for spiral galaxies
• X-Ray Bright Active Galactic Nuclei in Local Dwarf Galaxies: Insights from eROSITA
• UNCOVERing the High-redshift AGN Population among Extreme UV Line Emitters
• Evaluating hydrodynamical simulations with green valley galaxies
• FUV line emission, gas kinematics, and discovery of [Fe XXI] $\lambda$1354.1 in the sightline towards a filament in M87
• Dissecting the Power Sources of Low-Luminosity Emission-Line Galaxy Nuclei via Comparison of HST-STIS and Ground-Based Spectra
• Modeling Hot Gas Flow in the Low-Luminosity Active Galactic Nucleus of NGC3115
• Constraints on the Viscosity and Magnetic Field in Hot Accretion Flows around Black Holes
• The relative efficiencies of bars and clumps in driving disc stars to retrograde motion
• Nuclear Radio Jet from a Low-Luminosity Active Galactic Nucleus in NGC 4258
• Discovery of a Flat-Spectrum Radio Nucleus in NGC 3115
• A Compton-thick nucleus in the dual AGN of Mrk 266
• The Diagnostics and Possible Evolution in Active Galactic Nuclei Associated With Starburst Galaxies
• A Multi-Wavelength Study of Low Redshift Clusters of Galaxies I. Comparison of X-ray and Mid-Infrared Selected AGNs
• Gamma-rays as a diagnostic of the origin of core radiation in low-luminosity active galactic nuclei
• Emission and Absorption Properties of Low-Mass Type 2 Active Galaxies with XMM-Newton
• Larger ${\lambda }_R$ in the disc of isolated active spiral galaxies than in their non-active twins
• Self-similar structure of a hot magnetized flow with thermal conduction
• UM 625 Revisited: Multiwavelength Study of A Seyfert 1 Galaxy with a Low-mass Black Hole
• XMM-Newton observation of a sample of four close dSph galaxies
• AT2018dyk Revisited: a Tidal Disruption Event Candidate with Prominent Infrared Echo and Delayed X-ray Emission in a LINER Galaxy
• An Unobscured type II quasar candidate: SDSS J012032.19-005501.9
• The dependency of AGN infrared color-selection on source luminosity and obscuration: An observational perspective in CDFS and COSMOS
• The environment and redshift dependence of accretion onto dark matter halos and subhalos
• Is there a sub-parsec-scale jet base in the nearby dwarf galaxy NGC 4395?
• Composite Bulges -- IV. Detecting Signatures of Gas Inflows in the IFU data: The MUSE View of Ionized Gas Kinematics in NGC 1097
• Thermal wind from hot accretion flows at large radii
• A Deep Chandra View of the NGC 404 Central Engine
• Infrared spectroscopy of nearby radio active elliptical galaxies
• The Contribution of Active Galactic Nuclei to the Microjansky Radio Population
• Panchromatic Photometry of Low-redshift, Massive Galaxies Selected from SDSS Stripe 82
• Constraints on Two Active Galactic Nuclei in the Merger Remnant COSMOS J100043.15+020637.2
• A Novel Method to Identify AGNs Based on Emission Line Excess and the Nature of Low-luminosity AGNs in the Sloan Digital Sky Survey: II - Nature of Low-luminosity AGNs
• The inner view of NGC 1052 using multiple X-ray observations
• Spiral Arms in Broad-line Regions of Active Galactic Nuclei. I. Reverberation and Differential Interferometric Signals of Tightly Wound Cases
• Surprisingly Strong K-band Emission Found in Low Luminosity Active Galactic Nuclei
• Dynamics and Emission Properties of Flux Ropes from Two-Temperature GRMHD Simulations with Multiple Magnetic Loops
• A panchromatic spatially resolved study of the inner 500pc of NGC1052 -- II: Gas excitation and kinematics
• Multiwavelength Scrutiny of X-ray Sources in Dwarf Galaxies: ULXs versus AGN
• VLT/FORS2 observations of four high-luminosity ULX candidates
• Quenching star formation with low-luminosity AGN winds
• The nuclear region of NGC 613. I -- Multiwavelength analysis
• The ultraviolet flare at the center of the elliptical galaxy NGC 4278
• Final stage of merging binaries of supermassive black holes: observational signatures
• Constraining X-ray reflection in the low-luminosity AGN NGC 3718 using NuSTAR and XMM--Newton
• AGN and Star-Formation Properties of Inside-out Assembled Galaxy Candidates at z<0.1
• Black Hole Fundamental Plane in Low-Excitation Radio Galaxies
• Spontaneous Formation of Outflows Powered by Rotating Magnetized Accretion Flows in a Galactic Center
• Resolving the Ultra-Luminous X-ray Sources in the Ly$\alpha$ Emitting Galaxy Haro 11
• A lower limit to the accretion disc radius in the low-luminosity AGN NGC 1052 derived from high-angular resolution data
• Lepto-hadronic jet-disc model for the multi-wavelength SED of M87
• Discovery of An Active Intermediate-Mass Black Hole Candidate in the Barred Bulgeless Galaxy NGC 3319
• On the robustness of the H$\beta$ Lick index as a cosmic clock in passive early-type galaxies
• Hidden Broad-line Regions in Seyfert 2 Galaxies: from the spectropolarimetric perspective
• LIGO tells us LINERs are not optically thick RIAFs
• Cosmic evolution of radio-excess AGNs in quiescent and star-forming galaxies across $0<z<4$
• The Dynamics of Truncated Black Hole Accretion Disks I: Viscous, Hydrodynamic Case
• The Circumgalactic Medium in Massive Halos
• How do supernova remnants cool? -- I. Morphology, optical emission lines, and shocks
• Optical spectroscopy of type-2 LINERs
• Link between radio-loud AGNs and host-galaxy shape
• TESS Shines Light on the Origin of the Ambiguous Nuclear Transient ASASSN-18el
• The Large Amplitude X-ray Variability in NGC 7589: Possible Evidence for Accretion Mode Transition
• The Influence of Disk Composition on the Evolution of Stars in the Disks of Active Galactic Nuclei
• A Novel Method to Identify AGNs Based on Emission Line Excess and the Nature of Low-luminosity AGNs in the Sloan Digital Sky Survey: I - A Novel Method
• Isolated AGNs NGC 5347, ESO 438-009, MCG-02-04-090, and J11366-6002: Swift and NuSTAR joined view
• On minor black holes in galactic nuclei
• Modelling the time dependence of the TeV Gamma-ray source at the Galactic Centre
• Detection of a double-peaked H$\alpha$ component from the accretion disc of NGC 4958
• Low-mass Active Galactic Nuclei on the Fundamental Plane of Black Hole Activity
• Optical spectroscopy of type-2 LINERs
• A SysTematic seaRch fOr Dual Agns in meRgINg Galaxies (ASTRO-DARING) III: results from the SDSS spectroscopic surveys
• The interaction of the active nucleus with the host galaxy interstellar medium
• The VIRUS-P Exploration of Nearby Galaxies (VENGA): Radial Gas Inflow and Shock Excitation in NGC 1042
• Revisiting the Color-Color Selection: Submillimeter and AGN Properties of NUV-r-J Selected Quiescent Galaxies
• On the possible jet contribution to the $\gamma$-ray luminosity in NGC 1068
• SCAT Uncovers ATLAS's First Tidal Disruption Event ATLAS18mlw: A Faint and Fast TDE in a Quiescent Balmer Strong Galaxy
• Paired galaxies with different activity levels and their supernovae
• X-ray and radio observations of central black holes in nearby low-mass early-type galaxies: Preliminary evidence for low Eddington fractions
• The Unusual AGN Host NGC 1266: Evidence for Shocks in a Molecular Gas Rich S0 Galaxy with a Low Luminosity Nucleus
• Radio observations of four active galactic nuclei hosting intermediate-mass black hole candidates: studying the outflow activity and evolution
• eROSITA Final Equatorial-Depth Survey (eFEDS): eFEDS X-ray view of WERGS Radio Galaxies selected by the Subaru/HSC and VLA/FIRST survey
• Ongoing Star Formation In AGN Host Galaxy Disks: A View From Core-collapse Supernovae
• Broadband Modeling of Low Luminosity Active Galactic Nuclei Detected in Gamma Rays
• The effects of toroidal magnetic field on the vertical structure of hot accretion flows
• A strong negative correlation between radio loudness $R_{\mathrm{UV}}$ and optical-to-X-ray spectral index ${\alpha }_{\mathrm{ox}}$ in low-luminosity AGNs
• Accretion and jets in a low luminosity AGN: the nucleus of NGC 1052
• Resolving the Nuclear Radio Emission from M32 with Very Large Array
• AGN types and unification model
• A candidate of binary black hole system in AGN with broad Balmer emission lines having quite different line widths
• Physical and kinematic conditions of the local merging galaxy NGC 1487
• M94 As A Unique Testbed for Black Hole Mass Estimates and AGN Activity At Low Luminosities
• Black Hole Weather Forecasting with Deep Learning: A Pilot Study
• A low-luminosity type-1 QSO sample; III. Optical spectroscopic properties and activity classification
• Accretion-Driven Sources in Spatially Resolved Ly$\alpha$ Emitters
• Modelling dust rings in early-type galaxies through a sequence of radiative transfer simulations and 2D image fitting
• XMMSL1J063045.9-603110: a tidal disruption event fallen into the back burner
• The DIVING${}^{3D}$ Survey -- Deep IFS View of Nuclei of Galaxies -- I. Definition and Sample Presentation
• The Intriguing Parsec-Scale Radio Structure in the "Offset AGN" KISSR 102
• The DIVING${}^{3D}$ Survey -- Deep IFS View of Nuclei of Galaxies -- II. First results: nuclear emission-line properties of the mini-DIVING${}^{3D}$ sample
• Hydrodynamical simulations of the tidal stripping of binary stars by massive black holes
• The XMM spectral catalog of SDSS optically selected Seyfert 2 galaxies
• Clues on black hole feedback from simulated and observed X-ray properties of elliptical galaxies
• Digging process in NGC 6951: the molecular disc bumped by the jet
• NGC 3147: a prototypical low-luminosity active galactic nucleus with double-peaked optical and ultraviolet lines
• Compact radio emission from z~0.2 X-ray bright AGN
• Observational Evidence of a Centi-parsec Supermassive Black Hole Binary Existing in the Nearby Galaxy M81
• Linking the Supermassive Black Hole Growth with the Megamaser Emission
• The DIVING${}^{3D}$ Survey - Deep IFS View of Nuclei of Galaxies - III. Analysis of the nuclear region of the early-type galaxies of the sample
• An X-ray Bright Nucleus in the Low Surface Brightness Galaxy UGC 6614
• Infrared-detected AGNs in the Local Universe
• Dependence of optical Active Galactic Nuclei identification on stellar population models
• Do stellar winds play a decisive role in feeding AGN?
• Star formation in LINER host galaxies at z~0.3
• A nearby luminous AGN sample optically selected from Hubble Space Telescope (HST)
• NGC 6744 - A nearby Milky Way twin with a very low-luminosity AGN
• Properties of AGN selected by their mid-IR colours: evidence for a physically distinct mode of black hole growth
• Spotting the differences between active and non-active twin galaxies on kpc-scales. A pilot study
• Inquiring into the nature of the Abell 2667 Brightest Cluster Galaxy: physical properties from MUSE
• Very Large Array multi-band monitoring observations of M 31*
• What Kinds of Accretion Disks Are There in the Nuclei of Radio Galaxies?
• Star Formation in Ultraluminous Infrared Galaxies Probed with AKARI Near-Infrared Spectroscopy
• Revealing the nature of the ULX and X-ray population of the spiral galaxy NGC 4088
• Does the Jet Production Efficiency of Radio Galaxies Control Their Optical AGN Types?
• A Luminous X-ray Flare From The Nucleus of The Dormant Bulgeless Spiral Galaxy NGC 247
• Observational Constraints on Direct Electron Heating in the Hot Accretion Flows in Sgr A* and M87*
• NOEMA Detection of Circumnuclear Molecular Gas in X-ray Weak Dual Active Galactic Nuclei: No Evidence for Heavy Obscuration
• The local Universe in the era of large surveys -- II. Multi-wavelength characterisation of activity in nearby S0 galaxies
• Deep learning inference with the Event Horizon Telescope I. Calibration improvements and a comprehensive synthetic data library
• A multi-band AGN-SFG classifier for extragalactic radio surveys using machine learning
• A toy model for X-ray spectral variability of active galactic nuclei
• X-ray long-term variations in the low-luminosity AGN NGC835 and its circumnuclear emission
• The large-scale anisotropy and flux (de-)magnification of ultra-high-energy cosmic rays in the Galactic magnetic field
• Multifrequency Very Long Baseline Interferometry Imaging of the Subparsec-scale Jet in the Sombrero Galaxy (M104)
• Multiple Emission Regions in Jets of Low Luminosity Active Galactic Nucleus in NGC 4278
• A weakening Compton hump and soft X-ray excess detected in the Seyfert-1 galaxy MCG-02-58-22
• Multi-wavelength landscape of the young galaxy cluster RXJ1257.2+4738 at z=0.866. II. Morphological properties
• Spectral Modeling of Charge Exchange in the Central Region of M51
• Multi-wavelength observations of the triple-peaked AGN Mrk 622
• Temperature Profiles of Accretion Disks in Luminous Active Galactic Nuclei derived from Ultraviolet Spectroscopic Variability
• New Evidence for a Flux-independent Spectral Index of Sgr A* in the Near-infrared
• Advection-dominated accretion, jets and the spectral energy distribution of LINERs
• The Jet-Disk Coupling of Seyfert Galaxies from a Complete Hard X-ray Sample
• On the nature of high X-ray luminosities in SDSS galaxies
• Suppression of Star Formation in the Hosts of Low-Excitation Radio Galaxies
• On the genesis of spiral galaxies -- Classical and pseudo bulges as extremities of a continuous sequence
• Central accumulation of magnetic flux in massive Seyfert galaxies as a possible engine to trigger ultrahigh energy cosmic rays
• A Chandra Survey of Milky Way Globular Clusters. III. Searching for X-ray Signature of Intermediate-mass Black Holes
• A reference sample of face-on bulgeless galaxies
• The Performance of Photometric Reverberation Mapping at High Redshift and the Reliability of Damped Random Walk Models
• XMM-Newton --NuSTAR monitoring campaign of the Seyfert 1 galaxy IC 4329A
• Origin of the diffuse 4-8 keV emission in M82
• Very Large Array Multi-band Radio Imaging of the Triple AGN Candidate SDSS J0849+1114
• The Fates of Merging Supermassive Black Holes and a Proposal for a New Class of X-Ray Sources
• IFU observations of the inner 200 pc of NGC 4546: gas rotation, non-circular motions and ionised outflows
• A new delivery route to Galactic Nuclei: Warm halo cloud impacts
• Deciphering the Sources of Cosmic Neutrinos
• Universality of coronal properties in accreting black holes across mass and accretion rate
• On the Merging Cluster Abell 578 and Its Central Radio Galaxy 4C +67.13
• A Ringed Dwarf LINER 1 Galaxy Hosting an Intermediate-mass Black Hole with Large-scale Rotation-like Hα Emission
• Vertically Self-Gravitating ADAFs in the Presence of Toroidal Magnetic Field
• The origin of X-ray emission in 3CRR sources: hints from mid-infrared Spitzer observations
• A Morphological Study on AGN-host Dwarf Galaxies
• A compact symmetric ejection from the low mass AGN in the LINER galaxy NGC 4293
• Extended Emission-line Region in a Poststarburst Galaxy Hosting Tidal Disruption Event AT2019qiz and Quasiperiodic Eruptions
• Digging deeper into NGC\,6868 I: stellar population
• One of Everything: The Breakthrough Listen Exotica Catalog
• Low optical polarisation at the core of the optically-thin jet of M87
• A Mid-infrared Flare in the Seyfert Galaxy NGC 3786: A Changing-look Event Triggered by an Obscured Tidal Disruption Event?
• Close neighbors of Markarian galaxies. II. Statistics and discussions
• Discovery of faint double-peak Halpha emission in the halo of low redshift galaxies
• LeMMINGs. VI. Connecting nuclear activity to bulge properties of active and inactive galaxies: radio scaling relations and galaxy environment
• Jet-dominated quiescent state in black hole X-ray binaries: the cases of A0620--00 and XTE J1118+480
• Global structure and dynamics of slowly rotating accretion flows
• A Statistical Study of H I Gas in Nearby Narrow-Line AGN-Hosting Galaxies
• IC 630: Piercing the Veil of the Nuclear Gas
• H1821+643: The most X-ray and infrared luminous AGN in the Swift/BAT survey in the process of rapid stellar and supermassive black hole mass assembly
• Measuring the mass of the supermassive black hole of the lenticular galaxy NGC 4546
• Searching for Radio Outflows from M31* with VLBI Observations
• Two Physically Distinct Populations of Low-Ionization Nuclear Emission-Line Regions
• Chandra View of the LINER-type Nucleus in the Radio-Loud Galaxy CGCG 292-057: Ionized Iron Line and Jet-ISM Interactions
• Tracking X-ray Variability in Next Generation EHT LLAGN Targets
• Kinematics and Structure of Clumps in Broad-line Regions in Active Galactic Nuclei
• On the Unified View of Extragalactic Sources based on their Broadband Emission Properties
• Optical identification of radio-loud active galactic nuclei in the ROSAT-Green-Bank sample with SDSS spectroscopy
• Automated algorithms to build Active Galactic Nuclei classifiers
• Rapid turn-on of a luminous X-ray source in the candidate Lyman continuum emitting galaxy Tol 0440-381
• Photoionization Modeling of the Low Luminosity Seyfert 1 Nucleus in NGC 3516
• AGN dichotomy beyond radio loudness: a Gaussian Mixture Model analysis
• Astrophysical black holes
• Constraints on dynamically-formed massive black holes in Little Red Dots from X-ray non-detections
• Study of Central Intensity Ratio of Seyfert Galaxies in nearby Universe
• Shocked, Heated, and Now Resolved: H${}_2$ excitation in the low-luminosity AGN at M58 core with JWST
• A 2.5-dimensional viscous, resistive, advective magnetized accretion-outflow coupling in black hole systems: A higher order polynomial approximation. I
• [The Impact of Nuclear Star Formation on Gas Inflow to AGN
• Time-domain Radio-loudness of Active Galactic Nuclei: Intermittency, Memory, and Jet Escape
• The X-ray weakness of Little Red Dots and JWST-selected AGN: comparison with local AGN in different accretion regimes
• The X-ray variation of M81* resolved by Chandra and NuSTAR
• Measuring the properties of homogeneous turbulence in curved spacetimes
• A Simplified Model of ADAF with the Jet Driven by the Large-Scale Magnetic Field
• Identifying Radio Active Galactic Nuclei with Machine Learning and Large-Area Surveys
• Hard X-ray view of two $\gamma$-ray detected low-luminosity active galactic nuclei: NGC 315 and NGC 4261
• TeV Gamma-Rays from the Low-Luminosity Active Galactic Nucleus NGC 4278: Implications for the Diffuse Neutrino Background
• The highly obscured Seyfert 2 nucleus in NGC 1448 observed with MUSE
• ReveaLLAGN 1: JWST Emission-Line Spectra Reveal Low-Luminosity AGN with UV-Deficient SEDs and Warm Molecular Gas
• Extended nebular emission in CALIFA early-type galaxies
• Digging deeper into NGC 6868 II: ionized gas and excitation mechanism
• X-ray investigation of the remarkable galaxy group Nest200047
• A search for H${}_2$O masers in 100 active dwarf galaxies
• Hot accretion flows in low-luminosity active galactic nuclei in NGC 4258 and NGC 7213
• Spins of SMBHs in distant low luminosity AGNs
• On the Relation between the Inclination Angle of the Accretion Disk and the Broad-line Region in Active Galactic Nuclei
• Multiwavelength morphological study of active galaxies
• Hosts and environments: a (large-scale) radio history of AGN and star-forming galaxies
• Explaining the 'outliers' track in Black Hole X-ray Binaries with the BZ-jet and inner-disk coupling
• Obscured and unobscured X-ray AGNs I: Host galaxy properties
• Disk evolution of the M87's nucleus observed in 2008
• Testing the role of AGN on the star formation and metal enrichment of "twin galaxies"
• Mid-infrared Variability-based AGN Selection using the Multi-epoch Photometric Data from WISE
• Study of AGN contribution on morphological parameters of their host galaxies
• The Eddington Ratio Distribution of Narrow Line Active Galactic Nuclei
• The Origin of the Gas and Its Low Star Formation Efficiency in Quiescent Galaxies
• Fourier analysis of advection-dominated accretion flows
• A Hydrodynamical Thermal Irradiated Wind from the Outer Thin Accretion Disk in Low-luminosity Active Galactic Nuclei
• Identifying AGN host galaxies by Machine Learning with HSC+WISE
• The Nature of Jets in Double-Peaked Emission Line AGN in the KISSR Sample
• Nuclear mid-infrared properties of nearby low-luminosity AGN
• Feeding and Small-scale Feedback in Low-Luminosity AGNs
• Physical Drivers of Emission Line Diversity of SDSS Seyfert 2s and LINERs After Removal of Contributions by Star Formation
• Optical Spectroscopy of nearby type1-LINERs
• The extreme properties of the nearby hyper-Eddington accreting Active Galactic Nucleus in IRAS 04416+1215
• Solving the multi-messenger puzzle of the AGN-starburst composite galaxy NGC 1068
• A New Method to Determine X-ray Luminosity Functions of AGN and their Evolution with Redshift
• Millimeter-VLBI observations of low-luminosity active galactic nuclei with source-frequency phase-referencing
• Mid-IR properties of Seyferts: Spitzer/IRS spectroscopy of the IRAS 12micron Seyfert sample
• Variability Selected Active Galactic Nuclei from ASAS-SN Survey: Constraining the Low Luminosity AGN Population
• The role of young and evolved stars in the heating of dust in local galaxies
• Molecular gas content of gravitational-lensed quasars at cosmic noon
• Nuclear Activity and Host Galaxy Properties of Low-Luminosity AGN Identified from VLA Observations
• Application of the space-based optical interferometer towards measuring cosmological distances of quasars
• A mid-infrared exploration of the dusty environments of active galactic nuclei
• Top-heavy stellar mass distribution in galactic nuclei inferred from the universally high abundance ratio of [Fe/Mg]
• Physical origin of very-high-energy gamma rays from the low-luminosity active galactic nucleus NGC 4278 and implications for neutrino observations
• High Energy Emission from the Galactic Center
• IGR J12580+0134: The Nearest Tidal Disruption Event and its Faint Resurrection
• Common Excitation Patterns of Star Formation, Active Galactic Nuclei, and Shocks in Seyfert Galaxies
• Radiative cooling effects on black hole hot accretion flows around the sub-Bondi radius
• Visible shapes of black holes M87* and SgrA*
• X-ray and CO-Derived Column Densities in AGN: A Study of Obscuration Properties in CTAGN and Non-CTAGN
• X-ray polarization observations of NGC 2110 with IXPE
• Fueling, Evolution, and Diversity of AGN in Dwarf Galaxies: Insights from Star Formation and Black Hole Scaling Relations
• Evaluating quenching in cosmological simulations of galaxy formation with spectral covariance in the optical window
• The Nature of Black Hole Shadows