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Fig. 9

image

Chandra 68%, 90%, and 99% confidence contours for the southern and northern nucleus: equatorial column density NH (in units of 1024 cm-2) versus θobs (i.e., inclination angle between the torus polar axis and the observer’s line of sight). The confidence contours are evaluated leaving NH, θobs, and the normalizations of the direct continuum free to vary.

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