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arXiv · 1201.4435

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

Liang Chen·Xinwu Cao·Jinming Bai
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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.

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Liang Chen, Xinwu Cao, Jinming Bai. 2012-01-21. The central engines of two unusual radio-intermediate/quiet active galactic nuclei: III Zw 2 and PG 1407+265. https://doi.org/10.1088/0004-637x/748/2/119

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