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arXiv · 0709.1895

Broadband X-ray spectrum of the newly discovered broad line radio galaxy IGR J21247+5058

M. Molina·M. Giroletti·A. Malizia·R. Landi·L. Bassani·A. J. Bird·A. J. Dean·A. De Rosa·M. Fiocchi·F. Panessa
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Abstract

In this paper we present radio and high energy observations of the INTEGRAL source IGR J21247+5058, a broad line emitting galaxy obscured by the Galactic plane. Archival VLA radio data indicate that IGR J21247+5058 can be classified as an FRII Broad Line Radio Galaxy. The spectrum between 610 MHz and 15 GHz is typical of synchrotron self-absorbed radiation with a peak at 8 GHz and a low energy turnover; the core fraction is 0.1 suggestive of a moderate Doppler boosting of the base of the jet. The high energy broad-band spectrum was obtained by combining XMM-Newton and Swift/XRT observation with INTEGRAL/IBIS data. The 0.4-100 keV spectrum is well described by a power law, with slope $Γ$=1.5, characterised by complex absorption due to two layers of material partially covering the source and a high energy cut-off around 70-80 keV. Features such as a narrow iron line and a Compton reflection component, if present, are weak, suggesting that reprocessing of the power law photons in the accretion disk plays a negligible role in the source.

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M. Molina, M. Giroletti, A. Malizia, R. Landi, L. Bassani, A. J. Bird, A. J. Dean, A. De Rosa, M. Fiocchi, F. Panessa. 2007-09-12. Broadband X-ray spectrum of the newly discovered broad line radio galaxy IGR J21247+5058. https://doi.org/10.1111/j.1365-2966.2007.12464.x

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