Fig. 7
INTEGRAL-based duty cycles from Ducci et al. (2010, black filled triangles) and Paizis & Sidoli (2014, green empty triangles), and XRT duty cycle at the INTEGRAL sensitivity (red empty stars, Sect. 5.2). The downward-pointing arrows are consistent with 0. The right-pointing arrows at Porb = 1 are for sources lacking an orbital period.
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