Spectroscopy of Broad Line Blazars from 1LAC

Abstract

We report on optical spectroscopy of 165 Flat Spectrum Radio Quasars (FSRQs) in the Fermi 1LAC sample, which have helped allow a nearly complete study of this population. Fermi FSRQ show significant evidence for non-thermal emission even in the optical; the degree depends on the gamma-ray hardness. They also have smaller virial estimates of hole mass than the optical quasar sample. This appears to be largely due to a preferred (axial) view of the gamma-ray FSRQ and non-isotropic (H/R ~ 0.4) distribution of broad-line velocities. Even after correction for this bias, the Fermi FSRQ show higher mean Eddington ratios than the optical population. A comparison of optical spectral properties with Owens Valley Radio Observatory radio flare activity shows no strong correlation.

Accepted for publication in ApJ

References in corpus (2)

• A Catalog of Quasar Properties from SDSS DR7
• CGRaBS: An All-Sky Survey of Gamma-Ray Blazar Candidates

Cited by in corpus (143)

• MOJAVE. X. Parsec-Scale Jet Orientation Variations and Superluminal Motion in AGN
• The power of relativistic jets is larger than the luminosity of their accretion disks
• 3FHL: The Third Catalog of Hard Fermi-LAT Sources
• 2FHL: The Second Catalog of Hard Fermi-LAT Sources
• The Cosmic Evolution of Fermi BL Lacertae Objects
• MOJAVE. XVII. Jet Kinematics and Parent Population Properties of Relativistically Beamed Radio-Loud Blazars
• The Luminosity Function of Fermi-detected Flat-Spectrum Radio Quasars
• Spectroscopy of The Largest Ever Gamma-ray Selected BL Lac Sample
• MOJAVE XIII. Parsec-Scale AGN Jet Kinematics Analysis Based on 19 years of VLBA Observations at 15 GHz
• MOJAVE - XIV. Shapes and opening angles of AGN jets
• Fermi/LAT broad emission line blazars
• On the origin of gamma rays in Fermi blazars: beyond the broad line region
• A transition from parabolic to conical shape as a common effect in nearby AGN jets
• Very-high-energy gamma-rays from the Universe's middle age: detection of the z=0.940 blazar PKS 1441+25 with MAGIC
• MOJAVE: XVIII. Kinematics and Inner Jet Evolution of Bright Radio-Loud Active Galaxies
• The Central Engines of Fermi Blazars
• MOJAVE XIX: Brightness Temperatures and Intrinsic Properties of Blazar Jets
• On the jet properties of the gamma-ray loud active galactic nuclei
• Variable Gamma-ray Emission Induced by Ultra-High Energy Neutral Beams: Application to 4C +21.35
• Gamma rays from the quasar PKS 1441+25: story of an escape
• Connecting radio variability to the characteristics of gamma-ray blazars
• The jet-disc connection in AGN
• General Physical Properties of CGRaBS Blazars
• Diffuse $\gamma$-ray emission from unresolved BL Lac objects
• Intrinsic $\gamma$-ray luminosity, black hole mass, jet and accretion in Fermi blazars
• Radio-loud Narrow Line Seyfert 1 under a different perspective: a revised black hole mass estimate from optical spectropolarimetry
• Leptonic and Hadronic Radiative Processes in Supermassive-Black-Hole Jets
• The RoboPol optical polarization survey of gamma-ray - loud blazars
• Gamma-ray Emitting Narrow Line Seyfert 1 Galaxies in The Sloan Digital Sky Survey
• A comprehensive power spectral density analysis of astronomical time series I: the Fermi-LAT gamma-ray light curves of selected blazars
• Exploring the blazar zone in High Energy flares of FSRQs
• General Physical Properties of Gamma-ray Emitting Narrow-Line Seyfert 1 Galaxies
• An orientation-based unification of young jetted AGN: the case of 3C 286
• An X-ray and Multiwavelength Survey of Highly Radio-Loud Quasars at z > 4: Jet-Linked Emission in the Brightest Radio Beacons of the Early Universe
• New constraints on the structure and dynamics of black hole jets
• The Sloan Digital Sky Survey Reverberation Mapping Project: Accretion and Broad Emission Line Physics from a Hypervariable Quasar
• Photometrically Triggered Keck Spectroscopy of Fermi BL Lac Objects
• A Time Resolved Study of the Broad Line Region in Blazar 3C 454.3
• Multifrequency Studies of the Peculiar Quasar 4C +21.35 During the 2010 Flaring Activity
• Leptonic and Hadronic Modeling of Fermi-LAT Hard Spectrum Quasars and Predictions for High-Energy Polarization
• A New Sample of Gamma-Ray Emitting Jetted Active Galactic Nuclei
• BL Lacertae identifications in a ROSAT-selected sample of Fermi unidentified objects
• The Nature of Transition Blazars
• Blazars at the Cosmic Dawn
• BAT AGN Spectroscopic Survey: XVI. General Physical Characteristics of BAT Blazars
• MOJAVE XVI: Multi-Epoch Linear Polarization Properties of Parsec-Scale AGN Jet Cores
• Upper limits from five years of blazar observations with the VERITAS Cherenkov telescopes
• MOJAVE. XX. Persistent Linear Polarization Structure in Parsec-scale AGN Jets
• Synchrotron and inverse-Compton emission from blazar jets - IV. BL Lac type blazars and the physical basis for the blazar sequence
• Proton Synchrotron $\gamma$-rays and the Energy Crisis in Blazars
• Planck-scale constraints on anisotropic Lorentz and CPT invariance violations from optical polarization measurements
• How to constrain mass and spin of supermassive black holes through their disk emission
• Discovery of a FR0 radio galaxy emitting at $\gamma$-ray energies
• Detection of Quasar Feedback from the Thermal Sunyaev-Zel'dovich Effect in Planck
• Detection of a possible high-confidence radio quasi-periodic oscillation in the BL Lac PKS J2134-0153
• Extremes of the jet-accretion power relation of blazars, as explored by NuSTAR
• X-ray spectral studies of TeV gamma-ray emitting blazars
• An optical overview of blazars with LAMOST I: Hunting changing-look blazars and new redshift estimates
• ESO VLT Optical Spectroscopy of BL Lac Objects IV. New spectra and properties of the full sample
• The Powers of Relativistic Jets depend on the Spin of Accreting Supermassive Black Hole
• PKS 1424+240: yet another masquerading BL Lac object as a possible IceCube neutrino source
• Flare-like Variability of the Mg~II $\lambda$2798 Å Emission Line and UV Fe~II band in the Blazar CTA~102
• The relativistic jet and its central engine of $Fermi$ blazars
• Multiwavelength Study of High-Redshift Blazars
• Gamma-ray Luminosity and Photon Index Evolution of FSRQ Blazars and Contribution to the Gamma-ray Background
• The Estimation of Fundamental Physics Parameters for Fermi-LAT Blazars
• Multi-Frequency Observations of the Candidate Neutrino Emitting Blazar BZB J0955+3551
• The awakening of the gamma-ray narrow-Line Seyfert 1 galaxy PKS 1502+036
• Black-hole mass estimates for a homogeneous sample of bright flat-spectrum radio quasars
• Broad line region and black hole mass of PKS 1510-089 from spectroscopic reverberation mapping
• On the origin of the soft photons of the high synchrotron peaked blazar : PKS 1424+240
• A successful search for intervening 21 cm HI absorption in galaxies at 0.4 < z <1.0 with the Australian Square Kilometre Array Pathfinder (ASKAP)
• Exploring the origin of multiwavelength activities of high-redshift FSRQ PKS 1502+106 during 2014-2018
• Jet efficiencies and black hole spins in jetted quasars
• Gaussian Process Modeling Blazar Multiwavelength Variability: Indirectly Resolving Jet Structure
• The optical spectrum of PKS 1222+216 and its black hole mass
• Identifying the 3FHL catalog: I. Results of the KOSMOS optical spectroscopy campaign
• The TANAMI Multiwavelength Program: Dynamic SEDs of Southern Blazars
• Intra-Night Optical monitoring of three γ-ray detected Narrow-line Seyfert 1 galaxies
• High Energy Gamma-Ray Emission From PKS 1441+25
• SDSS J094635.06+101706.1: a redshift one, very radio-loud, γ-ray emitting narrow-line Seyfert 1 galaxy
• High-redshift blazars through nustar eyes
• What Powers the Most Relativistic Jets? II: Flat Spectrum Radio Quasars
• The physical properties of \textit{Fermi} TeV BL Lac objects jets
• An extensive study of blazar broad emission line: Changing-look blazars and Baldwin effect
• Searching for Quasi-Periodic Modulations in $\gamma$-ray Active Galactic Nuclei
• Caltech-NRAO Stripe 82 Survey (CNSS). IV. The Birth of Radio-loud Quasar 013815+00
• M87: a cosmic laboratory for deciphering black hole accretion and jet formation
• Curvature of the spectral energy distribution, the dominant process for inverse Compton component and other jet properties in Fermi 2LAC blazars
• Gamma-ray Emitting Narrow-Line Seyfert 1 Galaxies: Past, Present, and Future
• Optical spectral characterization of the gamma-ray blazars S4 0954+65, TXS 1515-273 and RX J0812.0+0237
• The First Gamma-ray Emitting BL Lacertae Object at the Cosmic Dawn
• Constraints on the location of $\gamma$-ray emitting region for a sample of blazars with radio core-shift measurements
• Radio and Gamma-ray Properties of Extragalactic Jets from the TANAMI Sample
• A Determination of the Gamma-ray Flux and Photon Spectral Index Distributions of Blazars from the Fermi-LAT 3LAC
• High redshift Fermi blazars observed by GROND and Swift
• Detection of a high-confidence quasi-periodic oscillation in radio light curve of the high redshift FSRQ PKS J0805-0111
• Multiwavelength Analysis of the Variability of the Blazar 3C 273
• TANAMI: Tracking Active Galactic Nuclei with Austral Milliarcsecond Interferometry - II. Additional Sources
• Multiwavelength analysis and the difference in the behavior of the spectral features during the 2010 and 2014 flaring periods of the blazar 3C 454.3
• The first GeV flare of the radio-loud narrow-line Seyfert 1 galaxy PKS 2004-447
• Cosmological Tests with the FSRQ Gamma-ray Luminosity Function
• A NuSTAR view of powerful gamma-ray loud blazars
• The $\gamma$-ray sky seen at X-ray energies I. Searching for the connection between X-rays and $\gamma$-rays in Fermi BL Lac objects
• Baldwin Effect and Additional BLR Component in AGN with Superluminal Jets
• The Physical Properties of Changing-look Blazars
• On the redshift of the very high energy γ-ray BL Lac object S2 0109+22
• The jets-accretion relation, mass-luminosity relation in Fermi blazars
• Identifying the 3FHL catalog: V. Results of the CTIO-COSMOS optical spectroscopy campaign 2019
• Radio Properties of the $\gamma$-ray Emitting CSO Candidate 2234+282
• Simultaneous spectra and radio properties of BL Lac's
• Temporal variability and estimation of jet parameters for Ton 599
• Scale invariant jets: from blazars to microquasars
• Detecting the Elusive Blazar Counter-Jets
• Spectroscopic reverberation mapping of Quasar PKS 0736+017: Broad-Line Region and Black-hole Mass
• The Most Compact Bright Radio-loud AGN -- II. VLBA Observations of Ten Sources at 43 and 86~GHz
• MOJAVE -- XXII. Brightness temperature distributions and geometric profiles along parsec-scale AGN jets
• Multiwavelength analysis and the C IV λ1549 Å emission line behavior from 2008 to 2020 of the FSRQ B2 1633+382
• A possible blazar spectral irregularity case caused by photon--axionlike-particle oscillations
• PAGaN II: The Evolution of AGN Jets on Sub-Parsec Scales
• Highly Variable $\gamma$-Ray Emission of CTD 135 and Implications for its Compact Symmetric Structure
• Fermi-LAT high $z$ AGN and the Extragalactic Background Light
• Spectropolarimetry and spectral decomposition of high-accreting Narrow Line Seyfert 1 galaxies
• Optical circular polarization induced by axionlike particles in blazars
• Location of gamma-ray flaring region in quasar 4C +21.35
• The redshift distribution of BL Lacs and FSRQs
• Interpreting MAD within multiple accretion regimes
• Two active states of the narrow-line gamma-ray-loud AGN GB 1310+487
• Search for anomalous features in gamma-ray blazar spectra corrected for the absorption on the extragalactic background light
• An Artificial Intelligence based approach for constraining the redshift of blazars using $\gamma$--ray observation
• The Quasar CTD 135 is Not a Compact Symmetric Object
• Hillas meets Eddington: The case for blazars as ultra-high-energy neutrino sources
• Constraints on VHE gamma-ray emission of Flat Spectrum Radio Quasars with the MAGIC telescopes
• Multiband optical variability on diverse timescales of the blazar Ton 599 from 2011 to 2023
• Search for the multiwavelength counterparts to extragalactic unassociated Fermi γ-ray sources
• Multi-messenger emission from the parsec-scale jet of the flat-spectrum radio quasar PKS 1502+106 coincident with high-energy neutrino IceCube-190730A
• Distance estimation of gamma-ray emitting BL Lac objects from imaging observations
• Multi-wavelength observations of the Blazar 4C +28.07
• Latest MAGIC discoveries pushing redshift boundaries in VHE Astrophysics
• The physical properties of candidate neutrino-emitter blazars
• Multi wavelength study of 4C+28.07
• The Relationship Between Emission Line and Continuum Luminosity and the Baldwin Effect in Blazars. I. The Case of the Mg II λ2798 Å Emission Line
• Uncovering the physics behind the blazar sequence using a realistic model for jet emission