MOJAVE XIII. Parsec-Scale AGN Jet Kinematics Analysis Based on 19 years of VLBA Observations at 15 GHz

Abstract

We present 1625 new 15 GHz (2 cm) VLBA images of 295 jets associated with active galactic nuclei (AGNs) from the MOJAVE and 2 cm VLBA surveys, spanning observations between 1994 Aug 31 and 2013 Aug 20. For 274 AGNs with at least 5 VLBA epochs, we have analyzed the kinematics of 961 individual bright features in their parsec-scale jets. A total of 122 of these jets have not been previously analyzed by the MOJAVE program. In the case of 451 jet features that had at least 10 epochs, we also examined their kinematics for possible accelerations. At least half of the well-sampled features have non-radial and/or accelerating trajectories, indicating that non-ballistic motion is common in AGN jets. Since it is impossible to extrapolate any accelerations that occurred before our monitoring period, we could only determine reliable ejection dates for about 24% of those features that had significant proper motions. The distribution of maximum apparent jet speeds in all 295 AGNs measured by our program to date is peaked below 5c, with very few jets with apparent speeds above 30c. The fastest speed in our survey is about 50c, measured in the jet of the quasar PKS 0805-07, and is indicative of a maximum jet Lorentz factor of about 50 in the parent population. The Fermi LAT-detected gamma-ray AGNs in our sample have, on average, higher jet speeds than non LAT-detected AGNs, indicating a strong correlation between pc-scale jet speed and gamma-ray Doppler boosting factor. We have identified 11 moderate-redshift (z<0.35) AGNs with fast apparent speeds (>10c) that are strong candidates for future TeV gamma-ray detection. Of the five gamma-ray loud narrow-lined Seyfert I AGNs in our sample, three show highly superluminal jet motions, while the others have sub-luminal speeds. (abridged)

arXiv comment16 pages, 8 figures, 5 tables; accepted by Astronomical journal; full electronic versions of the 5 tables are available from the preprint source

References in corpus (96)

• The Sloan Digital Sky Survey: Technical Summary
• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• Unified Schemes for Radio-Loud Active Galactic Nuclei
• The Sixth Data Release of the Sloan Digital Sky Survey
• The Second Data Release of the Sloan Digital Sky Survey
• The Fourth Data Release of the Sloan Digital Sky Survey
• The 6dF Galaxy Survey: Final Redshift Release (DR3) and Southern Large-Scale Structures
• The Sloan Digital Sky Survey Quasar Catalog V. Seventh Data Release
• The Third Data Release of the Sloan Digital Sky Survey
• Lyman Break Galaxies at Redshift z~3: Survey Description and Full Data Set
• The Second Catalog of Active Galactic Nuclei Detected by the Fermi Large Area Telescope
• MOJAVE: Monitoring of Jets in Active Galactic Nuclei with VLBA Experiments. VI. Kinematics Analysis of a Complete Sample of Blazar Jets
• DiFX2: A more flexible, efficient, robust and powerful software correlator
• The Third Catalog of Active Galactic Nuclei Detected by the Fermi Large Area Telescope
• The Sloan Digital Sky Survey Quasar Catalog IV. Fifth Data Release
• MOJAVE. X. Parsec-Scale Jet Orientation Variations and Superluminal Motion in AGN
• Sub-milliarcsecond Imaging of Quasars and Active Galactic Nuclei III. Kinematics of Parsec-Scale Radio Jets
• MOJAVE: Monitoring of Jets in AGN with VLBA Experiments. V. Multi-epoch VLBA Images
• Sub-milliarcsecond Imaging of Quasars and AGN
• The FIRST Bright Quasar Survey. II. 60 Nights and 1200 Spectra Later
• Efficient Photometric Selection of Quasars from the Sloan Digital Sky Survey: II. ~1,000,000 Quasars from Data Release Six
• MOJAVE: Monitoring of Jets in AGN with VLBA Experiments - I. First-Epoch 15 GHz Linear Polarization Images
• The Sloan Digital Sky Survey Quasar Catalog III. Third Data Release
• Improved redshifts for SDSS quasar spectra
• CGRaBS: An All-Sky Survey of Gamma-Ray Blazar Candidates
• Spectroscopy of The Largest Ever Gamma-ray Selected BL Lac Sample
• MOJAVE: Monitoring of Jets in Active Galactic Nuclei with VLBA Experiments. VIII. Faraday rotation in parsec-scale AGN jets
• Spectroscopy of Broad Line Blazars from 1LAC
• The VLBA Imaging and Polarimetry Survey at 5 GHz
• The Deep X-ray Radio Blazar Survey (DXRBS). I. Methods and First Results
• The Sloan Digital Sky Survey Quasar Catalog II. First Data Release
• The CORALS Survey I: New Estimates of the Number Density and Gas Content of Damped Lyman Alpha Systems Free from Dust Bias
• Imaging redshifts of BL Lac objects
• The Parkes Half-Jansky Flat-Spectrum Sample
• Dating COINS: Kinematic Ages for Compact Symmetric Objects
• The Sloan Digital Sky Survey Quasar Catalog I. Early Data Release
• MOJAVE: Monitoring of Jets in Active Galactic Nuclei with VLBA Experiments. XI. Spectral distributions
• Redshift-Distance Survey of Early-Type Galaxies: Spectroscopic Data
• SBS 0846+513: a new gamma-ray emitting Narrow-Line Seyfert 1 galaxy
• The Properties of the Radio-Selected 1Jy Sample of BL Lacertae Objects
• Gamma-Ray and Parsec-Scale Jet Properties of a Complete Sample of Blazars From the MOJAVE Program
• Second Data Release of the 6dF Galaxy Survey
• MOJAVE: Monitoring of Jets in AGN with VLBA Experiments. VII. Blazar Jet Acceleration
• Discovery of Very High Energy gamma-rays from 1ES 1011+496 at z=0.212
• A revised catalogue of EGRET gamma-ray sources
• The Gamma-Ray Blazar Content of the Northern Sky
• RBSC-NVSS Sample. I. Radio and Optical Identifications of a Complete Sample of 1500 Bright X-ray Sources
• A Northern Survey of Gamma-Ray Blazar Candidates
• Sub-Milliarcsecond Imaging of Quasars and Active Galactic Nuclei. II. Additional Sources
• MOJAVE XII: Acceleration and Collimation of Blazar Jets on Parsec Scales
• BL Lacertae objects beyond redshift 1.3 - UV-to-NIR photometry and photometric redshift for Fermi/LAT blazars
• ESO-VLT optical spectroscopy of BL Lac objects: II. New redshifts, featureless objects and classification assessments
• Parsec-Scale Blazar Monitoring: Flux and Polarization Variability
• The Cluster of Galaxies Surrounding Cygnus A
• ESO-VLT optical spectroscopy of BL Lac objects: I. new redshifts
• Group, field and isolated early-type galaxies I. Observations and nuclear data
• A Statistical Study of Rest-frame Optical Emission Properties in Luminous Quasars at 2.0 < z < 2.5
• Superluminal non-ballistic jet swing in the quasar NRAO 150 revealed by mm-VLBI
• The Parsec-Scale Jets of the TeV Blazars H 1426+428, 1ES 1959+650, and PKS 2155-304: 2001-2004
• Optical Identification of the ASCA Medium Sensitivity Survey in the Northern Sky: Nature of Hard X-ray-selected Luminous Active Galactic Nuclei
• Accurate Redshifts and Classifications for 110 Radio-Loud AGNs
• GPS radio sources: new optical observations and an updated master list
• Magellan Spectroscopy of Low-Redshift Active Galactic Nuclei
• Milky Way scattering properties and intrinsic sizes of active galactic nuclei cores probed by very long baseline interferometry surveys of compact extragalactic radio sources
• mJIVE-20: a survey for compact mJy radio objects with the Very Long Baseline Array
• Identification of a New $\gamma$-ray-emitting narrow-line Seyfert 1 Galaxy, at Redshift $\sim 1$
• Catching the radio flare in CTA 102: II. VLBI kinematic analysis
• Why Haven't Many of the Brightest Radio Loud Blazars Been Detected by Fermi ?
• Spectroscopy of High Energy BL Lac Objects with X-shooter on the VLT
• The B3-VLA CSS sample. II: VLBA images at 18 cm
• Jet Collimation in Action: Re-alignment on Kiloparsec Scales in 3C279
• Contemporaneous VLBA 5 GHz Observations of LAT-Detected Blazars
• Non-Uniform Free-Free Absorption in the GPS Radio Galaxy 0108+388
• The Molonglo Reference Catalog 1-Jy radio source survey IV. Optical spectroscopy of a complete quasar sample
• Imaging Redshift Estimates for BL Lacertae Objects
• Studies of the Jet in BL Lacertae. II. Superluminal Alfvén Waves
• Photometrically Triggered Keck Spectroscopy of Fermi BL Lac Objects
• The ordinary life of the gamma-ray emitting narrow-line Seyfert 1 galaxy PKS 1502+036
• The Apparent Host Galaxy of PKS 1413+135: HST, ASCA and VLBA Observations
• A survey for high-redshift radio-loud quasars: optical spectroscopy of S > 0.2 Jy, flat-spectrum radio sources
• VLBA observations of a rare multiple quasar imaging event caused by refraction in the interstellar medium
• The BL-Lac gamma-ray blazar PKS 1424+240 associated with a group of galaxies at z=0.6010
• Redshift constraints for RGB 0136+391 and PKS 0735+178 from deep optical imaging
• Optical Spectroscopy of BL Lac Objects:new redshifts and mis-identified sources
• On the Redshift of the Very High Energy Blazar 3C 66A
• Optical Spectroscopy of Bright Fermi LAT Blazars
• The final two redshifts for radio sources from the equatorial BRL sample
• Discovery of a GeV blazar shining through the Galactic plane
• Temporal Changes in Quasar Broad Emission Line Profiles and the Gravitationally Lensed Nature of Q1634+267A,B and Q2345+007A,B
• On the redshift of the bright BL Lac object PKS 0048-097
• Exploring the disk-jet connection from the properties of narrow line regions in powerful young radio-loud AGNs
• Optical Spectra of Candidate Southern Hemisphere International Celestial Reference Frame (ICRF) radio sources
• On the redshift of the very high energy γ-ray BL Lac object S2 0109+22
• Radio Properties of the $\gamma$-ray Emitting CSO Candidate 2234+282
• Imaging Redshift Estimates for Fermi BL Lacs
• Radio and Optical Spectra of Objects from Two Complete Samples of Radio Sources

Cited by in corpus (169)

• First M87 Event Horizon Telescope Results. IV. Imaging the Central Supermassive Black Hole
• Relativistic Jets in Active Galactic Nuclei
• Formation of Precessing Jets by Tilted Black-hole Discs in 3D General Relativistic MHD Simulations
• Kinematics of Parsec-Scale Jets of Gamma-Ray Blazars at 43~GHz within the VLBA-BU-BLAZAR Program
• MOJAVE: XV. VLBA 15 GHz Total Intensity and Polarization Maps of 437 Parsec-Scale AGN Jets From 1996-2017
• Radio galaxies and feedback from AGN jets
• MOJAVE. XVII. Jet Kinematics and Parent Population Properties of Relativistically Beamed Radio-Loud Blazars
• MOJAVE - XIV. Shapes and opening angles of AGN jets
• Constraining the limiting brightness temperature and Doppler factors for the largest sample of radio bright blazars
• Accelerating AGN jets to parsec scales using general relativistic MHD simulations
• Kinematics of Parsec-Scale Jets of Gamma-Ray Bright Blazars at 43 GHz during Ten Years of the VLBA-BU-BLAZAR Program
• Characterizing the Gamma-Ray Variability of the Brightest Flat Spectrum Radio Quasars Observed with the Fermi LAT
• A transition from parabolic to conical shape as a common effect in nearby AGN jets
• MOJAVE: XVIII. Kinematics and Inner Jet Evolution of Bright Radio-Loud Active Galaxies
• Significant core shift variability in parsec-scale jets of active galactic nuclei
• Radio-emitting narrow-line Seyfert 1 galaxies in the JVLA perspective
• Radio observations of active galactic nuclei with mm-VLBI
• Stochastic modeling of multiwavelength variability of the classical BL Lac object OJ 287 on timescales ranging from decades to hours
• Collimation, Acceleration and Recollimation Shock in the Jet of Gamma-Ray-emitting Radio-Loud Narrow-Line Seyfert 1 Galaxy 1H 0323+342
• A quantitative analysis of systematic differences in positions and proper motions of Gaia DR2 with respect to VLBI
• Kinematics of the M87 jet in the collimation zone: gradual acceleration and velocity stratification
• Dynamical Imaging with Interferometry
• Radio jets and gamma-ray emission in radio-silent narrow-line Seyfert 1 galaxies
• Constraining the photon coupling of ultra-light dark-matter axion-like particles by polarization variations of parsec-scale jets in active galaxies
• Persistence of precursor waves in two-dimensional relativistic shocks
• Fermi non-detections of four X-ray jet sources and implications for the IC/CMB mechanism
• The Relativistic Jet Dichotomy and the End of the Blazar Sequence
• Multiwavelength behaviour of the blazar 3C279: decade-long study from $\gamma$-ray to radio
• Evolving parsec-scale radio structure in the most distant blazar known
• Observational consequences of optical band milliarcsecond-scale structure in active galactic nuclei discovered by Gaia
• 37 GHz observations of narrow-line Seyfert 1 galaxies
• Uncovering the host galaxy of the $\gamma$-ray-emitting narrow-line Seyfert 1 galaxy FBQS J1644+2619
• Large-scale environments of narrow-line Seyfert 1 galaxies
• Multiwavelength observations of the blazar BL Lacertae: a new fast TeV gamma-ray flare
• Multi-wavelength variability study of the classical BL Lac object PKS 0735+178 on timescales ranging from decades to minutes
• Detection statistics of the RadioAstron AGN survey
• MOJAVE XVI: Multi-Epoch Linear Polarization Properties of Parsec-Scale AGN Jet Cores
• VLBI radio structure and radio brightening of the high-energy neutrino emitting blazar TXS 0506+056
• Gamma rays from Fast Black-Hole Winds
• Multi-Epoch VLBA Imaging of Twenty New TeV Blazars: Apparent Jet Speeds
• Proton Synchrotron $\gamma$-rays and the Energy Crisis in Blazars
• An X-ray Imaging Survey of Quasar Jets -- The Complete Survey
• Cloud ablation by a relativistic jet and the extended flare in CTA 102 in 2016 and 2017
• Testing two-component models on very-high-energy gamma-ray emitting BL Lac objects
• First Multi-wavelength Campaign on the Gamma-ray-loud Active Galaxy IC 310
• Compact Bright Radio-loud AGNs -- III. A Large VLBA Survey at 43 GHz
• The TeV emission of Ap Librae: a hadronic interpretation and prospects for CTA
• Global millimeter VLBI array survey of ultracompact extragalactic radio sources at 86 GHz
• Gamma-ray emission in radio galaxies under the VLBI scope -- I. Parsec-scale kinematics and high-energy properties of $\gamma$-ray detected TANAMI radio galaxies
• Jets in radio galaxies and quasars: an observational perspective
• Extreme Gaseous Outflows in Radio-Loud Narrow-Line Seyfert 1 Galaxies
• Multiwavelength Photometric and Spectropolarimetric Analysis of the FSRQ 3C 279
• The Extragalactic Gamma-Ray Background from Core Dominated Radio Galaxies
• The awakening of the gamma-ray narrow-Line Seyfert 1 galaxy PKS 1502+036
• The Event Horizon Telescope Image of the Quasar NRAO 530
• Multiwavelength variability power spectrum analysis of the blazars 3C 279 and PKS 1510-089 on multiple timescales
• Multi-frequency study of the gamma-ray flaring BL Lac object PKS 2233-148 in 2009-2012
• Symmetric Achromatic Variability in Active Galaxies -- A Powerful New Gravitational Lensing Probe?
• The TeV-emitting radio galaxy 3C 264. VLBI kinematics and SED modeling
• Reversals in the Direction of Polarization Rotation in OJ 287
• Parsec-scale Properties of eight Fanaroff-Riley Type 0 Radio Galaxies
• Radio morphology of southern narrow-line Seyfert 1 galaxies with Very Large Array observations
• A Recollimation Shock in a Stationary Jet Feature with Limb-brightening in the Gamma-ray Emitting Narrow-line Seyfert 1 Galaxy 1H 0323+342
• Intra-Night Optical monitoring of three γ-ray detected Narrow-line Seyfert 1 galaxies
• Long-term millimeter VLBI monitoring of M87 with KVN at milliarcsecond resolution: nuclear spectrum
• Parsec-scale jet properties of the quasar PG 1302$-$102
• The high brightness temperature of B0529+483 revealed by RadioAstron and implications for interstellar scattering
• The extended flare in CTA 102 in 2016 and 2017 within a hadronic model through cloud ablation by the relativistic jet
• The Properties of Parsec-Scale Blazar Jets
• Are Low-Frequency Quasi-Periodic Oscillations seen in accretion flows the disk response to a jet instability?
• The physical properties of \textit{Fermi} TeV BL Lac objects jets
• Fast jet proper motion discovered in a blazar at z = 4.72
• The Relativistic Jet Orientation and Host Galaxy of the Peculiar Blazar PKS 1413+135
• SDSSJ143244.91+301435.3 at VLBI: a compact radio galaxy in a narrow-line Seyfert 1
• Resolving accretion flows in nearby active galactic nuclei with the Event Horizon Telescope
• Detection of a gamma-ray flare from the high-redshift blazar DA 193
• Imaging and variability studies of CTA~102 during the 2016 January $\gamma$-ray flare
• Statistical properties of Faraday rotation measure in external galaxies -- I: intervening disc galaxies
• Ejection of Double knots from the radio core of PKS 1510--089 during the strong gamma-ray flares in 2015
• No Small Scale Radio Jets Here: Multi-Epoch Observations of Radio Continuum Structures in NGC 1068 with the VLBA
• Gamma-ray Emitting Narrow-Line Seyfert 1 Galaxies: Past, Present, and Future
• The peculiar light-curve of J1415+1320: A case study in extreme scattering events
• Dual-high-frequency VLBI study of blazar-jet brightness-temperature gradients and collimation profiles
• Discovery of $\gamma$-ray emission from the radio-intermediate quasar III Zw 2: violent jet activity with intraday $\gamma$-ray variability
• The Extreme Red Excess in Blazar Ultraviolet Broad Emission Lines
• Radio and optical intra-day variability observations of five blazars
• Jet Kinematics of the Quasar 4C +21.35 from Observations with the KaVA Very Long Baseline Interferometry Array
• A geometrical interpretation for the properties of multiband optical variability of the blazar S5 0716+714
• Probing an X-ray flare pattern in Mrk 421 induced by multiple stationary shocks: a solution to the bulk Lorentz factor crisis
• X-ray timing and spectral variability properties of blazars S5 0716+714, OJ 287, Mrk 501, and RBS 2070
• Radio Jet Proper-motion Analysis of Nine Distant Quasars above Redshift 3.5
• Blazar jet evolution revealed by multi-epoch broadband radio polarimetry
• Magnetic Field Strengths of the Synchrotron Self-Absorption Region in the Jet of CTA 102 During Radio Flares
• Localizing the $\gamma$-ray emitting region in the blazar TXS 2013+370
• The Close AGN Reference Survey (CARS): Tracing the circumnuclear star formation in the super-Eddington NLS1 Mrk 1044
• Optical variability power spectrum analysis of blazar sources on intranight timescales
• Interferometric Monitoring of Gamma-ray Bright AGNs: S5 0716+714
• The parsec-scale jet of the neutrino-emitting blazar TXS~0506+056
• Frequency-Dependent Core Shifts in Ultracompact Quasars
• Radio jet structures at ~100 parsec and larger scales of the $\gamma$-ray-emitting narrow-line Seyfert 1 galaxy PMN J0948+0022
• The relativistic jet of the $\gamma$-ray emitting narrow-line Seyfert 1 galaxy PKS J1222$+$0413
• FRAMEx II: Simultaneous X-ray and Radio Variability in Active Galactic Nuclei $-$ The Case of NGC 2992
• Observations of the gamma-ray emitting narrow-line Seyfert 1, SBS 0846+513, and its host galaxy
• The radio structure of the peculiar narrow-line Seyfert 1 galaxy candidate J1100+4421
• Opacity, variability and kinematics of AGN jets
• Locations of optical and $\gamma$-ray emitting regions in the jet of PMN J2345-1555
• Is there a non-stationary γ-ray emission zone 42 pc away from the 3C 279 core?
• Radio spectra of narrow-line Seyfert 1 galaxies observed with ATCA and VLASS
• Emission Line Variability during a Nonthermal Outburst in the Gamma-Ray Bright Quasar 1156+295
• The radio-loud narrow-line Seyfert 1 galaxy 1H 0323+342 in a galaxy merger
• Numerical Investigation of Dynamical and Morphological Trends in Relativistic Jets
• The Most Compact Bright Radio-loud AGN -- II. VLBA Observations of Ten Sources at 43 and 86~GHz
• Detecting the Elusive Blazar Counter-Jets
• Revealing the Unusual Structure of the KAT-7-Discovered Giant Radio Galaxy J0133$-$1302
• Neutrino production in blazar radio cores
• On the Internal Structure of Relativistic Jets with Zero Velocity Along the Axis
• What defines a compact symmetric object? A carefully vetted sample of CSOs
• Parabolic jet shape on parsec scales in high redshift AGN
• Unveiling the Bent Jet Structure and Polarization of OJ 287 at 1.7 GHz with Space VLBI
• Long-term multiband optical variability of S5 0716+714 blazar
• Jet Radiation Properties of 4C +49.22: from the Core to Large-Scale Knots
• Toy model for the acceleration of blazar jets
• Double SSA Spectrum and Magnetic Field Strength of the FSRQ 3C 454.3
• Probing the Heart of Active Narrow-line Seyfert 1 Galaxies with VERA Wideband Polarimetry
• Configuration of the global magnetic field in AGN parsec-scale jets
• Exploring the role of composition and mass-loading on the properties of hadronic jets
• On the influence of a Hybrid Thermal-Non thermal distribution in the Internal Shocks model for blazars
• On the M87 jet structure near the central engine
• Precessing Jet in the High-Redshift Blazar J0017+8135
• Is Fermi 1544-0649 a misaligned blazar? discovering the jet structure with VLBI
• K2 Optical Emission from OJ 287 and Other Gamma-Ray Blazars on Hours-to-Weeks Timescales from 2014-2018
• The radio structure of the $\gamma$-ray narrow-line Seyfert 1 galaxy SDSS J211852.96$-$073227.5
• A procedure for making high dynamic-range radio images: Deep imaging of the kiloparsec-scale radio structures of a distant blazar, NRAO 530, with JVLA data
• An optical perspective on early-stage AGN with extreme radio flares
• Inverse Compton Scattering of the Central Source Photons as an X-ray Emission Mechanism on Kiloparsec Scales in PKS 1127-145
• PKS1413+135: OH and HI at z = 0.247 with MeerKAT
• Time-Dependent Modeling of the Sub-Hour Spectral Evolution During the 2013 Outburst of Mrk 421
• XMM-NuSTAR Observation and Multiwavelength SED Modeling of Blazar 4FGL J1520.8-0348
• Depolarization and Faraday effects in AGN Jets
• The Quasar CTD 135 is Not a Compact Symmetric Object
• Multi-scale Radio and X-ray Structure of the High-redshift Quasar PMN J0909+0354
• Estimating the feasibility of `standard speed-gun' distances
• A method for checking high-redshift identification of radio AGNs
• Radio interferometric observation of an asteroid occultation
• Parsec-scale evolution of the gigahertz-peaked spectrum quasar PKS 0858-279
• Fermi/LAT observations of Lobe-dominant Radio Galaxy 3C 207 and Possible Radiation Region of the Gamma-Rays
• Solid Identification of Extragalactic Gamma-Ray Source Using High-Resolution Radio Interferometric Observation
• The rare extended radio-loud narrow-line Seyfert 1 galaxy SDSS J1030+5516 at high resolution
• Searching for Radio Outflows from M31* with VLBI Observations
• Jet physics of accreting super-massive black holes in the era of the Fermi Gamma-ray Space Telescope
• Very Long Baseline Interferometry Observations of the Proposed Radio Counterpart of an EGRET Source
• Multiwavelength Variability Analysis of the Blazar PKS 0727-11: A $\sim$168 Days Quasi-periodic Oscillation in Gamma-ray
• A New Solution to the Plasma Starved Event Horizon Magnetosphere: Application to the Forked Jet in M87
• Proper Motions in the sub-kiloparsec Jet of 3C 78: Novel Constraints on the Physical Nature of Relativistic Jets
• NOCTURNE. I. The radio spectrum of narrow-line Seyfert 1 galaxies
• Parsec-scale Structure and Kinematics of Faint TeV HBLs
• Studies of stationary features in jets: 3C 279 quasar I. On-sky scattering and dynamics
• Tension of toroidal magnetic field in reconnection plasmoids and relativistic jets
• Multi-Frequency VLBA Polarimetry and the Twin-Jet Quasar 0850+581
• Intra-Day Variability Observations of Two Dozens of Blazars at 4.8 GHz
• A redshifted excess in the broad emission lines after the flare of the $\gamma$-ray narrow-line Seyfert 1 PKS 2004-447
• Is there a Blazar Nested in the Core of the Radio Galaxy 3C 411?
• Probing the innermost regions of AGN jets and their magnetic fields with RadioAstron. V. Space and ground millimeter-VLBI imaging of OJ 287
• Using strong lensing to understand the microJy radio emission in two radio quiet quasars at redshift 1.7
• Waiting times between gamma-ray flares of Flat Spectrum Radio Quasars, and constraints on emission processes
• The Dyson Minds 2025 Workshop: SETI around Black Holes
• Intra-night optical variability study of a non-jetted narrow-line Seyfert 1 galaxy: SDSS J163401.94+480940.1
• Blazar flares from plasma blobs crossing the broad-line region
• Evidence of jet induced optical microvariability in radio-loud Narrow Line Seyfert 1 Galaxies