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Fig. 6


Absorption-corrected 2–10 keV luminosity as a function of MIR luminosity at 6 μm (symbols as in Fig. 4). The cyan pentagons represent the MIR luminous quasars sample from the GOODS-Herschel fields presented by Del Moro et al. (2016). The violet asterisks indicate the hyper-luminous quasars ULAS J1539+0557, ULAS J2315+0143 and 2QZ0028-2830 (see Appendix A). The black solid, dashed, dotted, and dash-dotted lines represent the Mateos et al. (2015), Lanzuisi et al. (2009), Stern (2015), and Chen et al. (2017) relations, respectively. The gray shaded area indicates the intrinsic scatter about the Mateos relation. The red dashed line box indicates the locus of the WISSH quasars. We report two values for the hard X-ray luminosity of J0045+1438 (i.e., the object with the lowest X-ray luminosity in the X-WISSH sample) connected by a gray line. We calculated the L2−10 using the HR-based value of NH (i.e., 4 × 1022 cm-2, green open circle) and the upper error (i.e., NH = 1.5 × 1023 cm-2, gray open circle), respectively.

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