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In order to understand the diversity of classes observed in active galacticnuclei (AGN), a geometrically and optically thick torus of gas and dust isrequired to obscure the central engine depending on the line of sight to theobserver. We perform a simultaneous fitting of X-ray and mid-infrared (mid-IR)spectra to investigate if the same structure could produce both emissions and,if this the case, to obtain better constraints for the physical parameters ofthe torus. In this case, we take advantage of the fact that both emissions showimportant signatures of obscuration. We used the nearby type-2 active nucleusIC 5063 as a test object. This object is ideal because of the wealth ofarchival data including some high resolution data. It also has a relativelyhigh AGN luminosity that dominates at both X-ray and mid-IR frequencies. We usehigh spectral resolution NuSTAR and IRS/Spitzer spectra. The AGN dusty modelsused several physically motivated models. We found that the combination of thesmooth torus models at mid-IR by Fritz et al. (2006) and at X-rays byBalokovi\'c et al. (2018), with the viewing and half-opening angles linked tothe same value, is the best choice to fit the spectra at both wavelengths. Thisallows us to determine all the parameters of its torus. This result suggeststhat the structure producing the continuum emission at mid-IR and thereflection component at X-ray is the same. Therefore, we prove that thistechnique can be used to infer the physical properties of the torus, at leastwhen AGN dust dominates the mid-IR emission and the reflection component issignificant at X-rays.

Physical parameters of the torus for the type 2 Seyfert IC 5063 from mid-IR and X-ray simultaneous spectral fitting