Investigating the connection between gamma-ray activity and relativistic jet in 3C273 during 2015-2019
arXiv:2003.05659 · doi:10.1051/0004-6361/202037474
Abstract
Due to its powerful radiation over the entire electromagnetic spectrum and its radio jet activity, the blazar 3C273 offers the opportunity to study the physics of -ray emission from active galactic nuclei. Since a historically strong outburst in 2009, 3C273 showed relatively weak emission in the gamma-ray band over multiple years. However, recent Fermi-Large Area Telescope observations indicate elevated activity during 2015-2019. We aim at constraining the origin of the gamma-ray outbursts towards 3C273 and investigate their connection to the parsec-scale jet. We generate Fermi-LAT gamma-ray light curves with multiple binning intervals and study the spectral properties of the gamma-ray emission. Using a 3-mm ALMA light curve, we study the correlation between radio and gamma-ray emission. Relevant activity in the parsec-scale jet of 3C273 is investigated with 7-mm VLBA observations obtained close in time to notable gamma-ray outbursts. We find two prominent gamma-ray outbursts in 2016 (MJD 57382) and 2017 (MJD 57883) accompanied by mm-wavelength flaring activity. The gamma-ray photon index time series show a weak hump-like feature around the gamma-ray outbursts. The monthly gamma-ray flux-index plot indicates a transition from softer-when-brighter to harder-when-brighter at . A significant correlation between the gamma-ray and mm-wavelength emission is found, with the radio lagging the gamma-rays by about 105-112 days. The 43-GHz jet images reveal the known stationary features (i.e., the core, S1, and S2) in a region upstream of the jet. We find indication for a propagating disturbance and a polarized knot between the stationary components around the times of both gamma-ray outbursts.
arXiv comment14 pages, 11 figures, 3 tables. To appear in A&A (submitted: 2020 January 10; accepted: 2020 March 5)
References in corpus (71)
- The Large Area Telescope on the Fermi Gamma-ray Space Telescope Mission
- Fermi Large Area Telescope Fourth Source Catalog
- Relativistic Jets in Active Galactic Nuclei
- Polarimetric Observations of 15 Active Galactic Nuclei at High Frequencies: Jet Kinematics from Bimonthly Monitoring with the Very Long Baseline Array
- Relativistic Reconnection: an Efficient Source of Non-Thermal Particles
- MOJAVE: Monitoring of Jets in Active Galactic Nuclei with VLBA Experiments. VI. Kinematics Analysis of a Complete Sample of Blazar Jets
- Turbulent, Extreme Multi-Zone Model for Simulating Flux and Polarization Variability in Blazars
- Probing the Inner Jet of the Quasar PKS 1510-089 with Multi-waveband Monitoring during Strong Gamma-ray Activity
- Kinematics of Parsec-Scale Jets of Gamma-Ray Blazars at 43~GHz within the VLBA-BU-BLAZAR Program
- Gamma-ray Light Curves and Variability of Bright Fermi-Detected Blazars
- Spectral Properties of Bright Fermi-detected Blazars in the Gamma-ray Band
- Location of gamma-ray Flare Emission in the Jet of the BL Lacertae Object OJ287 more than 14pc from the Central Engine
- Constraining the location of the emitting region in Fermi blazars through rapid gamma-ray variability
- A Tight Connection between Gamma-Ray Outbursts and Parsec-Scale Jet Activity in the Quasar 3C 454.3
- On the relation between AGN gamma-ray emission and parsec-scale radio jets
- On the origin of gamma rays in Fermi blazars: beyond the broad line region
- On the Location of the Gamma-ray Emission in the 2008 Outburst in the BL Lacertae Object AO 0235+164 through Observations across the Electromagnetic Spectrum
- Characterizing the Gamma-Ray Variability of the Brightest Flat Spectrum Radio Quasars Observed with the Fermi LAT
- Radio/gamma-ray time delay in the parsec-scale cores of active galactic nuclei
- Fermi Large Area Telescope and multi-wavelength observations of the flaring activity of PKS 1510-089 between 2008 September and 2009 June
- Radio to gamma-ray variability study of blazar S5 0716+714
- Recollimation Shocks in Magnetized Relativistic Jets
- Significant core shift variability in parsec-scale jets of active galactic nuclei
- On the jet properties of the gamma-ray loud active galactic nuclei
- Flare-like variability of the Mg IIλ2800Å emission line in the gamma-ray blazar 3C 454.3
- Multiwavelength Variations of 3C 454.3 during the November 2010 to January 2011 Outburst
- Fast reconnection in relativistic plasmas: the magnetohydrodynamics tearing instability revisited
- The brightest gamma-ray flares of blazars
- ALMACAL IV: A catalogue of ALMA calibrator continuum observations
- Time-Dependent Models for Blazar Emissions with the Second-Order Fermi Acceleration
- Location of Gamma-ray emission and magnetic field strengths in OJ 287
- Constraining the location of rapid gamma-ray flares in the FSRQ 3C 273
- Probing Blazar Emission Processes with Optical/Gamma-ray Flare Correlations
- Locating the gamma-ray emission site in Fermi/LAT blazars from correlation analysis between 37 GHz radio and gamma-ray light curves
- A connection between -ray and parsec-scale radio flares in the blazar 3C 273
- Does the Blazar Gamma-Ray Spectrum Harden with Increasing Flux? Analysis of 9 Years of EGRET Data
- An innovative blazar classification based on radio jet kinematics
- The -ray spectrum of the core of Centaurus A as observed with H.E.S.S. and Fermi-LAT
- Concurrent 43 and 86 GHz Very Long Baseline Polarimetry of 3C273
- Fermi-Large Area Telescope Observations of the Exceptional Gamma-ray Flare from 3C 279 in 2015 June
- Constraints on the emission region of 3C 279 during strong flares in 2014 and 2015 through VHE gamma-ray observations with H.E.S.S
- Spectral distributions in compact radio sources I. Imaging with VLBI data
- Probing the innermost regions of AGN jets and their magnetic fields with RadioAstron II. Observations of 3C 273 at minimum activity
- Multiwavelength observations of the blazar BL Lacertae: a new fast TeV gamma-ray flare
- KVN observations suggest multiple -ray emission regions in 3C 84
- Acceleration of Compact Radio Jets on Sub-parsec Scales
- A method for localizing energy dissipation in blazars using Fermi variability
- Synchrotron and inverse-Compton emission from blazar jets - III. Compton-dominant blazars
- Exploring the nature of broadband variability in the FSRQ 3C 273
- Exploring the connection between parsec-scale jet activity and broadband outbursts in 3C 279
- The Origin of Complex Behavior of Linearly Polarized Components in Parsec-Scale Jets
- Interferometric Monitoring of Gamma-ray Bright AGNs I: Results of Single-epoch Multifrequency Observations
- Constraints of Flat Spectrum Radio Quasars in the hadronic model: the case of 3C 273
- Study on Temporal and Spectral behavior of 3C 279 during 2018 January flare
- Identifying Breaks and Curvature in the Fermi Spectra of Bright Flat Spectrum Radio Quasars
- Multi-frequency variability study of Ton 599 during high activity of 2017
- Localising the gamma-ray emission region during the June 2014 outburst of 3C 454.3
- Exploring the relation between (sub-)millimeter radiation and gamma-ray emission in blazars with Planck and Fermi
- Exploring the origin of multiwavelength activities of high-redshift FSRQ PKS 1502+106 during 2014-2018
- Multi-wavelength observations of the gamma-ray flaring quasar S4 1030+61 in 2009-2014
- Long-term millimeter VLBI monitoring of M87 with KVN at milliarcsecond resolution: nuclear spectrum
- A Steady-State Spectral Model For Electron Acceleration And Cooling In Blazar Jets: Application To 3C 279
- Ejection of Double knots from the radio core of PKS 1510--089 during the strong gamma-ray flares in 2015
- The first IRAM/PdBI polarimetric millimeter survey of active galactic nuclei. II. Activity and properties of individual sources
- Exploring the Variability of the Flat Spectrum Radio Source 1633+382. I. Phenomenology of the Light Curves
- Gamma-ray Loudness, Synchrotron Peak Frequency, and Parsec-Scale Properties of Blazars Detected by the Fermi Large Area Telescope
- Exploring the connection between radio and GeV-TeV gamma-ray emission in the 1FHL and 2FHL AGN samples
- Exploring the Nature of the 2016 γ-ray Emission in the Blazar 1749+096
- The flat-spectrum radio quasar 3C 345 from the high to the low emission state
- Two blobs in a jet model for the gamma-ray emission in radio galaxies
- The mid-2016 flaring activity of the flat spectrum radio quasar PKS 2023-07
Cited by in corpus (4)
- Jet Properties of Compact Steep-Spectrum Sources and an Eddington-Ratio-Driven Unification Scheme of Jet Radiation in Active Galactic Nuclei
- Flux variability from ejectas in structured relativistic jets with large-scale magnetic fields
- Flare echos from relaxation shocks in perturbed relativistic jets
- Up around the bend: a multi-wavelength view of the quasar 3C 345