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An optically and geometrically thick torus obscures the central engine ofActive Galactic Nuclei (AGN) from some lines of sight. From amagnetohydrodynamical framework, the torus can be considered to be a particularregion of clouds surrounding the central engine where the clouds are dusty andoptically thick. In this framework, the magnetic field plays an important rolein the creation, morphology and evolution of the torus. If the dust grainswithin the clouds are assumed to be aligned by paramagnetic alignment, then theratio of the intrinsic polarisation and visual extinction, P(%)/Av, is afunction of the magnetic field strength.  To estimate the visual extinction through the torus and constrain thepolarisation mechanisms in the nucleus of AGN, we developed a polarisationmodel to fit both the total and polarised flux in a 1.2" (~263pc) aperture ofthe type 2 AGN, IC5063. The polarisation model is consistent with the nuclearpolarisation observed at K being produced by dichroic absorption from aligneddust grains with a visual extinction through the torus of 48$\pm$2 mag. Weestimated the intrinsic polarisation arising from dichroic absorption to beP$_{K}^{dic}$=12.5$\pm$2.7%.  We consider the physical conditions and environment of the gas and dust forthe torus of IC5063. Then, through paramagnetic alignment, we estimate amagnetic field strength in the range of 12-128mG in the NIR emitting regions ofthe torus of IC5063. Alternatively, we estimate the magnetic field strength inthe plane of the sky using the Chandrasekhar-Fermi method. The minimum magneticfield strength in the plane of the sky is estimated to be 13 and 41 mGdepending of the conditions within the torus of IC5063. These techniques affordthe chance to make a survey of AGN, to investigate the effects of magneticfield strength on the torus, accretion, and interaction to the host galaxy.

Estimations of the magnetic field strength in the torus of AGN using near-infrared polarimetry