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arXiv · 1407.2625

An XMM-Newton View of the Radio Galaxy 3C 411

Allison Bostrom·Christopher S. Reynolds·Francesco Tombesi
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Abstract

We present the first high signal-to-noise XMM-Newton observations of the broad-line radio galaxy 3C 411. After fitting various spectral models, an absorbed double power-law continuum and a blurred relativistic disk reflection model (kdblur) are found to be equally plausible descriptions of the data. While the softer power-law component ($\Gamma$=2.11) of the double power-law model is entirely consistent with that found in Seyfert galaxies (and hence likely originates from a disk corona), the additional power law component is very hard ($\Gamma$=1.05); amongst the AGN zoo, only flat-spectrum radio quasars have such hard spectra. Together with the very flat radio-spectrum displayed by this source, we suggest that it should instead be classified as a FSRQ. This leads to potential discrepancies regarding the jet inclination angle, with the radio morphology suggesting a large jet inclination but the FSRQ classification suggesting small inclinations. The kdblur model predicts an inner disk radius of at most 20 r$_g$ and relativistic reflection.

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Allison Bostrom, Christopher S. Reynolds, Francesco Tombesi. 2014-07-09. An XMM-Newton View of the Radio Galaxy 3C 411. https://doi.org/10.1088/0004-637x/791/2/119

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