Parsec-scale jet properties of the quasar PG 1302$-$102

Abstract

The quasar PG 1302$-$102 is believed to harbour a supermassive binary black hole (SMBBH) system. Using the available 15 GHz and $2-8$ GHz, multi-epoch Very Long Baseline Array data, we constrain the pc-scale jet properties based on the inferred mean proper motion, including a bulk Lorentz factor $\ge 5.1\pm 0.8$, jet inclination angle $\le (11.4\pm 1.7)$ degrees, projected position angle $=31.8$ degrees, intrinsic half opening angle $\le (0.9\pm 0.1)$ degrees and a mean $2-8$ GHz spectral index of 0.31. A general relativistic helical jet model is presented and applied to predict quasi-periodic oscillations of $\sim$ 10 days, power law power spectrum shape and a contribution of up to $\sim$ 53 percent to the observed variable core flux density. The model is used to make a case for high resolution, moderately sampled, long duration radio interferometric observations to reveal signatures due to helical knots and distinguish them from those due to SMBBH orbital activity including a phase difference $\sim \pi$ and an amplitude ratio (helical light curve amplitude/SMBBH light curve amplitude) of $0.2-3.3$. The prescription can be used to identify helical kinematic signatures from quasars, providing possible candidates for further studies with polarization measurements. It can also be used to infer promising SMBBH candidates for the study of gravitational waves if there are systematic deviations from helical signatures.

10 pages, 7 figures, 2 tables, accepted for publication in MNRAS

References in corpus (17)

• The stochastic gravitational-wave background from massive black hole binary systems: implications for observations with Pulsar Timing Arrays
• Sub-milliarcsecond Imaging of Quasars and Active Galactic Nuclei III. Kinematics of Parsec-Scale Radio Jets
• A massive binary black-hole system in OJ287 and a test of general relativity
• MOJAVE: Monitoring of Jets in AGN with VLBA Experiments. V. Multi-epoch VLBA Images
• A possible close supermassive black-hole binary in a quasar with optical periodicity
• MOJAVE: Monitoring of Jets in Active Galactic Nuclei with VLBA Experiments. VIII. Faraday rotation in parsec-scale AGN jets
• Chandra unveils a binary Active Galactic Nucleus in Mrk463
• A close-pair binary in a distant triple supermassive black-hole system
• Three dimensional magnetic field structure of six parsec-scale active galactic nuclei jets
• A Periodically Varying Luminous Quasar at z=2 from the Pan-STARRS1 Medium Deep Survey: A Candidate Supermassive Black Hole Binary in the Gravitational Wave-Driven Regime
• Prospects for gravitational-wave detection and supermassive black hole astrophysics with pulsar timing arrays
• Kinematics of and emission from helically orbiting blobs in a relativistic magnetized jet
• Orbital Decay of Supermassive Black Hole Binaries in Clumpy Multiphase Merger Remnants
• Harmonic QPOs and Thick Accretion Disk Oscillations in BL Lac Object AO 0235+164
• Two in one? A possible dual radio-emitting nucleus in the quasar SDSS J1425+3231
• Variation in the primary and reprocessed radiation from an orbiting spot around a black hole
• X-Ray Variability and the Inner Region in Active Galactic Nuclei

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