A connection between $\gamma$-ray and parsec-scale radio flares in the blazar 3C 273

Abstract

We present a comprehensive 5-43 GHz VLBA study of the blazar 3C 273 initiated after an onset of a strong $\gamma$-ray flare in this source. We have analyzed the kinematics of new-born components, light curves, and position of the apparent core to pinpoint the location of the $\gamma$-ray emission. Estimated location of the $\gamma$-ray emission zone is close to the jet apex, 2 pc to 7 pc upstream from the observed 7 mm core. This is supported by ejection of a new component. The apparent core position was found to be inversely proportional to frequency. The brightness temperature in the 7 mm core reached values up to at least $10^{13}$ K during the flare. This supports the dominance of particle energy density over that of magnetic field in the 7 mm core. Particle density increased during the radio flare at the apparent jet base, affecting synchrotron opacity. This manifested itself as an apparent core shuttle along the jet during the 7 mm flare. It is also shown that a region where optical depth decreases from $\tau \sim 1$ to $\tau <<1$ spans over several parsecs along the jet. The jet bulk flow speed estimated at the level of 12c on the basis of time lags between 7 mm light curves of stationary jet features is 1.5 times higher than that derived from VLBI apparent kinematics analysis.

arXiv commentAccepted for publication in MNRAS. 17 pages, 15 figures, 10 tables, with supplementary materials attached

References in corpus (45)

• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• The Large Area Telescope on the Fermi Gamma-ray Space Telescope Mission
• Polarimetric Observations of 15 Active Galactic Nuclei at High Frequencies: Jet Kinematics from Bimonthly Monitoring with the Very Long Baseline Array
• On Uncertainties in Cross-Correlation Lags and the Reality of Wavelength-Dependent Continuum Lags in Active Galactic Nuclei
• 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
• Doppler factors, Lorentz factors and viewing angles for quasars, BL Lacertae objects and radio galaxies
• Sub-milliarcsecond Imaging of Quasars and Active Galactic Nuclei. IV. Fine Scale Structure
• Gamma-ray Light Curves and Variability of Bright Fermi-Detected Blazars
• Generating artificial light curves: Revisited and updated
• Jet opening angles and gamma-ray brightness of AGN
• Magnetic field strength and spectral distribution of six parsec-scale active galactic nuclei jets
• GeV breaks in blazars as a result of gamma-ray absorption within the broad-line region
• 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
• Opacity in compact extragalactic radio sources and its effect on astrophysical and astrometric studies
• 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
• A VLBA survey of the core shift effect in AGN jets I. Evidence for dominating synchrotron opacity
• Detection of significant cm to sub-mm band radio and gamma-ray correlated variability in Fermi bright blazars
• Rapid variability in TeV blazars: the case of PKS 2155-304
• MOJAVE: Monitoring of Jets in Active Galactic Nuclei with VLBA Experiments. XI. Spectral distributions
• Parsec-Scale Blazar Monitoring: Proper Motions
• 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
• Radio/gamma-ray time delay in the parsec-scale cores of active galactic nuclei
• Kinetic Luminosity and Composition of Active Galactic Nuclei Jets
• VLBI-Gaia offsets favor parsec-scale jet direction in Active Galactic Nuclei
• RadioAstron Observations of the Quasar 3C273: a Challenge to the Brightness Temperature Limit
• An adaptive-binning method for generating constant-uncertainty/constant-significance light curves with Fermi-LAT data
• Core shifts, magnetic fields and magnetization of extragalactic jets
• Relativistic Outflow Drives Gamma-Ray Emission in 3C345
• Location of Gamma-ray emission and magnetic field strengths in OJ 287
• Multifrequency VLBA Monitoring of 3C 273 during the INTEGRAL Campaign in 2003 - I. Kinematics of the Parsec Scale Jet from 43 GHz Data
• Constraining the location of rapid gamma-ray flares in the FSRQ 3C 273
• The core shift effect in the blazar 3C 454.3
• Fermi-LAT observations of the exceptional gamma-ray outbursts of 3C 273 in September 2009
• Locating the gamma-ray emission site in Fermi/LAT blazars from correlation analysis between 37 GHz radio and gamma-ray light curves
• Jet outflow and gamma-ray emission correlations in S5 0716+714
• Extreme Brightness Temperatures and Refractive Substructure in 3C273 with RadioAstron
• Exploring the nature of broadband variability in the FSRQ 3C 273
• A Python Code for the Emmanoulopoulos et al. [arXiv:1305.0304] Light Curve Simulation Algorithm
• Multi-wavelength observations of the gamma-ray flaring quasar S4 1030+61 in 2009-2014
• Discovery of a wandering radio jet base after a large X-ray flare in the blazar Markarian 421
• Parsec-Scale Behavior of Blazars during High Gamma-Ray States
• Magnetic Field Structure in the Parsec Scale Jet of 3C273 from Multifrequency VLBA Observations

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