The central engines of two unusual radio-intermediate/quiet active galactic nuclei: III Zw 2 and PG 1407+265

Abstract

We use the accretion disk/corona+jet model to fit the multi-band spectral energy distributions (SEDs) of two unusual radio-intermediate/quiet quasars. It is found that the optical/UV emission of III Zw 2 is probably dominated by the emission from the accretion disk. The X-ray emission should be dominated by the radiation from the jet, while the contribution of the disk corona is negligible. The optical/UV component in the SED of PG 1407+265 can be well modeled as the emission from the accretion disk, while the IR component is attributed to the thermal radiation from the dust torus with an opening angle ~ 50\circ. If the X-ray continuum emission is dominated by the synchrotron emission of the jet, the source should be a "high peak frequency blazar", which obviously deviates the normal blazar sequence. The observed SED can also be fitted quite well by the accretion disk/corona model with the viscosity parameter ? = 0:5. The spectrum of the accretion disk/corona in PG 1407+265 satisfies the weak line quasar criterion suggested in Laor & Davis.

26 pages, 5 figures, Accepted by ApJ

References in corpus (13)

• The Second Catalog of Active Galactic Nuclei Detected by the Fermi Large Area Telescope
• Radio-Loudness of Active Galactic Nuclei: Observational Facts and Theoretical Implications
• The power of blazar jets
• The New Generation Atlas of Quasar Spectral Energy Distributions from Radio to X-rays
• The radio structure of radio-quiet quasars
• An accretion disc-corona model for X-ray spectra of active galactic nuclei
• Cold Accretion Disks and Lineless Quasars
• Multiwavelength Observations of Radio-quiet Quasars with Weak Emission Lines
• Implications on the blazar sequence and inverse Compton models from Fermi bright blazars
• Is there really a dichotomy in AGN jet power?
• Evidence for a population of beamed radio intermediate quasars
• Possible gamma-ray emission of radio intermediate AGN III Zw 2 and its implication on the evolution of jets in AGNs
• A puzzle of radio-quiet quasar PG 1407+265: are optical and X-ray emissions produced from relativistic jet?

Cited by in corpus (13)

• The curvature of spectral energy distribution of blazars
• Jet Properties of GeV-Selected Radio-Loud Narrow-Line Seyfert 1 Galaxies and Possible Connection to Their Disk and Corona
• On the origin of the hard X-Ray excess of high-synchrotron-peaked BL Lac object Mrk 421
• Blazar Anti-Sequence of Spectral Variation within individual Blazars: Cases for Mrk 501 and 3C 279
• On the origin of the soft photons of the high synchrotron peaked blazar : PKS 1424+240
• Discovery of $\gamma$-ray emission from the radio-intermediate quasar III Zw 2: violent jet activity with intraday $\gamma$-ray variability
• Constraints on the location of the gamma-ray emission region for the gamma-ray-loud radio source GB 1310+487
• Comparisons of Jet Properties between GeV Radio Galaxies and Blazars
• Similarity of Jet Radiation between Flat Spectrum Radio Quasars and GeV Narrow-Line Seyfert 1 Galaxies: A Universal $\delta$-$L_{\mathrm{c}}$ Correlation
• On the origin of GeV spectral break for Fermi blazars: 3C 454.3
• Joint XMM-Newton and NuSTAR observations of the reflection spectrum of III Zw 2
• Jet Radiation Properties of 4C +49.22: from the Core to Large-Scale Knots
• Constraints on black hole spins with a general relativistic accretion disk corona model