Fig. 3
Energy spectra of IRAS F00183–7111, observed with four X-ray observatories: a) XMM-Newton: EPIC pn (open squares) and EPIC MOS1 and MOS2 combined (solid circles); b) Chandra ACIS-S; c) Suzaku XIS0 (solid circles); XIS1 and XIS3 combined (open squares); and d) NuSTAR: FPMA and FPMB combined. The dotted-line histogram in each panel indicates the best-fit model of an absorbed power-law plus a Gaussian for the 2–20 keV data obtained by fitting to all the datasets jointly (see text). Spectral parameters are identical between the observatories apart from the normalizations of the power-law and the Gaussian line. Emission below 2 keV originates from an extended extranuclear region (Fig. 1). Note that the model for Fe K in (d) shows a line feature with its intensity observed with XMM-Newton for a comparison with the data.
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