The Circinus Galaxy has been observed , for the first time above 10 keV , by BeppoSAX .
An excess emission above the extrapolation of the best fit 0.1–10 keV spectrum is apparent in the PDS data .
The most likely explanation is that we are observing the nucleus through a column density of \sim 4 \times 10 ^ { 24 } cm ^ { -2 } , i.e .
large enough to completely block the radiation below 10 keV but small enough to permit partial transmission above this energy .