The IR to X-rays SED of the heavily obscured quasar IRAS 09104+4109

Constraining the NH distribution of AGNs at high column densities and high X-ray luminosites is crucial to provide a reliable MIR/X-ray luminosity ratio distribution and compare it with the expectations of dust reprocessing models. Here we present the IR to X-rays broad band SED of of the hyperluminous infrared galaxy and Type 2 quasar IRAS 09104+4109 (z=0.442), taking into account our recent result suggesting the likely Compton-thin nature of its absorber.