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Recent mid-infrared (MIR) interferometric observations showed in few activegalactic nuclei (AGN) that the bulk of the infrared emission originates fromthe polar region above the putative torus, where only little dust should bepresent. Here, we investigate whether such strong polar dust emission is commonin AGN. Out of 149 Seyferts in the MIR atlas of local AGN (Asmus et al.), 21show extended MIR emission on single dish images. In 18 objects, the extendedMIR emission aligns with the system axis position angle, established by [OIII],radio, polarisation and maser based position angle measurements. The relativeamount of resolved MIR emission is at least 40 per cent and scales with the[OIV] fluxes implying a strong connection between the extended continuum and[OIV] emitters. These results together with the radio-quiet nature of theSeyferts support the scenario that the bulk of MIR emission is emitted by dustin the polar region and not by the torus, which would demand a new paradigm forthe infrared emission structure in AGN. The current low detection rate of polardust in the AGN of the MIR atlas is explained by the lack of sufficient highquality MIR data and the requirement for the orientation, NLR strength anddistance of the AGN. The James-Webb Space Telescope will enable much deepernuclear MIR studies with comparable angular resolution, allowing us to resolvethe polar emission and surroundings in most of the nearby AGN.

The subarcsecond mid-infrared view of local active galactic nuclei: III. Polar dust emission