Signatures of a spinning supermassive black hole binary on the mas-scale jet of the quasar S5 1928+738 based on 25 years of VLBI data

Abstract

In a previous work, we have identified the spin of the dominant black hole of a binary from its jet properties. Analysing Very Long Baseline Array (VLBA) observations of the quasar S5~1928+738, taken at $15$-GHz during $43$ epochs between $1995.96$ and $2013.06$, we showed that the inclination angle variation of the inner ($<2$~mas) jet symmetry axis naturally decomposes into a periodic and a monotonic contribution. The former emerges due to the Keplerian orbital evolution, while the latter is interpreted as the signature of the spin-orbit precession of the jet emitting black hole. In this paper, we revisit the analysis of the quasar S5~1928+738 by including new $15$-GHz VLBA observations extending over $29$ additional epochs, between $2013.34$ and $2020.89$. The extended data set confirms our previous findings which are further supported by the flux density variation of the jet. By applying an enhanced jet precession model that can handle arbitrary spin orientations $\kappa$ with respect to the orbital angular momentum of a binary supermassive black hole system, we estimate the binary mass ratio as $\nu =0.21\pm 0.04$ for $\kappa =0$ (i.e. when the spin direction is perpendicular to the orbital plane) and as $\nu =0.32\pm 0.07$ for $\kappa =\pi /2$ (i.e. when the spin lies in the orbital plane). We estimate more precisely the spin precession velocity, halving its uncertainty from $(-0.05\pm 0.02{)}^{\circ }{\mathrm{yr}}^{-1}$ to $(-0.04\pm 0.01{)}^{\circ }{\mathrm{yr}}^{-1}$.

arXiv comment13 pages, 5 figures, 7 tables. Accepted to appear in MNRAS

References in corpus (34)

• Unified Schemes for Radio-Loud Active Galactic Nuclei
• Quasinormal modes of black holes and black branes
• Transition from inspiral to plunge in binary black hole coalescences
• Coalescing binary systems of compact objects to (post)$^{5/2}-Newtonian order. V. Spin Effects
• MOJAVE: Monitoring of Jets in Active Galactic Nuclei with VLBA Experiments. VI. Kinematics Analysis of a Complete Sample of Blazar Jets
• The power of relativistic jets is larger than the luminosity of their accretion disks
• The promise of multi-band gravitational wave astronomy
• Formation of Precessing Jets by Tilted Black-hole Discs in 3D General Relativistic MHD Simulations
• A systematic search for close supermassive black hole binaries in the Catalina Real-Time Transient Survey
• MOJAVE: XV. VLBA 15 GHz Total Intensity and Polarization Maps of 437 Parsec-Scale AGN Jets From 1996-2017
• Massive Black Hole Binary Evolution
• A Population of Short-Period Variable Quasars from PTF as Supermassive Black Hole Binary Candidates
• A Large Systematic Search for Recoiling and Close Supermassive Binary Black Holes
• Bardeen-Petterson Alignment, Jets and Magnetic Truncation in GRMHD Simulations of Tilted Thin Accretion Discs
• Parsec-Scale Blazar Monitoring: Proper Motions
• A close-pair binary in a distant triple supermassive black-hole system
• The spin-flip phenomenon in supermassive black hole binary mergers
• Intrinsic Differences in the Inner Jets of High- and Low-Optically Polarized Radio Quasars
• The role of Kelvin-Helmholtz instability in the internal structure of relativistic outflows. The case of the jet in 3C 273
• A Systematic Search for Periodically Varying Quasars in Pan-STARRS1: An Extended Baseline Test in Medium Deep Survey Field MD09
• The Blandford-Znajek mechanism and emission from isolated accreting black holes
• A spinning supermassive black hole binary model consistent with VLBI observations of the S5 1928+738 jet
• Candidate Periodically Variable Quasars from the Dark Energy Survey and the Sloan Digital Sky Survey
• Precession-induced Variability in AGN Jets and OJ 287
• VLBI radio structure and radio brightening of the high-energy neutrino emitting blazar TXS 0506+056
• Bardeen-Petterson effect and the disk structure of the Seyfert galaxy NGC 1068
• Constraining the parameters of the putative supermassive binary black hole in PG 1302-102 from its radio structure
• A ring accelerator? Unusual jet dynamics in the IceCube candidate PKS 1502+106
• Recurrent Neutrino Emission from Supermassive Black Hole Mergers
• Spinning compact binary inspiral: Independent variables and dynamically preserved spin configurations
• Neurino Cadence of TXS~0506+056 Consistent with Supermassive Binary Origin
• Flaring radio lanterns along the ridge line: long-term oscillatory motion in the jet of S5 1803+784
• Extragalactic neutrino emission induced by Supermassive and Stellar Mass Black Hole mergers
• The changing ISM of massive elliptical galaxies and cosmic evolution of radio galaxies and quasars

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