Fig. 6.
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Orbital phase dependence of the power law spectral parameters of lowest intensity states observed during the two XMM–Newton observations (performed in 2007 and 2020) and the Suzaku one. The power-law photon index and unabsorbed flux (in units of 10−13 erg cm−2 s−1) are reported in the upper and lower panels, respectively (see Sect. 5 for details).
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