Possible Evidence of a Universal Radio/X-ray Correlation in a near-Complete Sample of Hard X-ray Selected Seyfert Galaxies

Abstract

Because the disc--jet coupling likely depends on various properties of sources probed, the sample control is always an important but challenging task. In this work, we re-analyzed the INTEGRAL hard X-ray-selected sample of Seyfert galaxies. We only consider sources that have measurements in black hole mass, and luminosities in radio and X-rays. Our sample includes 64 sources, consists of both bright AGNs and low-luminosity ones. We first find that, because of the similarity in the $L_{HX}/L_X$ distribution, the X-ray origin of radio-loud Seyferts may be the same to that of radio-quiet ones, where we attribute to the hot accretion flow (or similarly, the corona). We then investigate the connections between luminosities in radio and X-rays. Since our sample suffers a selection bias of a black hole mass $M_{BH}$ dependence on $L_X/L_{Edd}$, we focus on the correlation slope ${\xi }_X$ between the radio (at 1.4 GHz) and X-ray luminosities in Eddington unit, i.e. $(L_R/L_{Edd})\propto (L_X/L_{Edd}{)}^{{\xi }_X}$. We classify the sources according to various properties, i.e. 1) Seyfert classification, 2) radio loudness, and 3) radio morphology. We find that, despite these differences in classification, all the sources in our sample are consistent with a universal correlation slope ${\xi }_X$, with ${\xi }_X=0.77\pm 0.10$. This is unexpected, considering various possible radio emitters in radio-quiet systems. For the jet interpretation, our result may suggest a common/universal but to be identified jet launching mechanism among all the Seyfert galaxies, while properties like black hole spin and magnetic field strength only play secondary roles. We further estimate the jet production efficiency ${\eta }_{jet}$ of Seyfert galaxies, which is ${\eta }_{jet}\approx 1.9_{-1.5}^{+0.9}\times 10^{-4}$ on average. We also find that ${\eta }_{jet}$ increases as the system goes fainter.

12 pages, 5 figures

References in corpus (39)

• The Co-Evolution of Galaxies and Supermassive Black Holes: Insights from Surveys of the Contemporary Universe
• Active Galactic Nuclei: what's in a name?
• Radio-Loudness of Active Galactic Nuclei: Observational Facts and Theoretical Implications
• The power of relativistic jets is larger than the luminosity of their accretion disks
• Sub-milliarcsecond Imaging of Quasars and Active Galactic Nuclei III. Kinematics of Parsec-Scale Radio Jets
• The Discovery of the First "Changing Look" Quasar: New Insights into the Physics & Phenomenology of AGN
• Simultaneous X-ray/optical/UV snapshots of active galactic nuclei from XMM-Newton: spectral energy distributions for the reverberation mapped sample
• BAT AGN Spectroscopic Survey I: Spectral Measurements, Derived Quantities, and AGN Demographics
• Radiatively Inefficient Accretion in Nearby Galaxies
• A synthesis model for AGN evolution: supermassive black holes growth and feedback modes
• On the origin of radio emission in radio quiet quasars
• Accretion states and radio loudness in Active Galactic Nuclei: analogies with X-ray binaries
• The Fundamental Plane of Accretion Onto Black Holes with Dynamical Masses
• The faint radio sky: radio astronomy becomes mainstream
• The X-ray and Radio Connection in Low-luminosity Active Nuclei
• Correlation between the photon index and X-ray luminosity of black hole X-ray binaries and active galactic nuclei: observations and interpretation
• Magnetohydrodynamic Simulations of Active Galactic Nucleus Disks and Jets
• The Fundamental Plane of Black Hole Accretion and its Use as a Black Hole-Mass Estimator
• The black hole fundamental plane: revisit with a larger sample of radio and X-ray emitting broad-line AGNs
• The black hole fundamental plane from a uniform sample of radio and X-ray emitting broad line AGNs
• The 1.4 GHz radio properties of hard X-ray selected AGN
• The VSOP 5 GHz Active Galactic Nucleus Survey: V. Imaging Results for the Remaining 140 sources
• Analytical Solution of Magnetically Dominated Astrophysical Jets and Winds: Jet Launching, Acceleration, and Collimation
• Black Hole Accretion Correlates with Star Formation Rate and Star Formation Efficiency in Nearby Luminous Type 1 Active Galaxies
• BAT AGN Spectroscopic Survey -- XV: The High Frequency Radio Cores of Ultra-hard X-ray Selected AGN
• Discovery of a giant radio fossil in the Ophiuchus galaxy cluster
• Fundamental Reference AGN Monitoring Experiment (FRAMEx) I: Jumping Out of the Plane with the VLBA
• Fundamental Plane of Black Hole Activity in Quiescent Regime
• Masses and Accretion Rates of Supermassive Black Holes in Active Galactic Nuclei from the INTEGRAL Survey
• Radiative Properties of Magnetically-Arrested Disks
• Jet efficiencies and black hole spins in jetted quasars
• BAT AGN Spectroscopic Survey -- XVII: The Parsec-scale Jet Properties of the Ultra Hard X-ray Selected Local AGN
• On the diversity of the jet production efficiency in Swift/BAT AGNs
• The X-ray emission in young radio AGNs
• The AT20G view of Swift/BAT selected AGN: high-frequency radio waves meet hard X-rays
• Hard - X-rays selected Active Galactic Nuclei. I. A radio view at high-frequencies
• A strong negative correlation between radio loudness $R_{\mathrm{UV}}$ and optical-to-X-ray spectral index ${\alpha }_{\mathrm{ox}}$ in low-luminosity AGNs
• On the Energy Coupling Efficiency of AGN Outbursts in Galaxy Clusters
• Correlation analysis of radio properties and accretion-disk luminosity for low luminosity AGNs

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