Photon index Γ, rolloff energy Erolloff and cyclotron line energy Ecyc as a function of the source flux in the 10–100 keV band in units of Crab and the luminosity in erg/s for a distance of 2 kpc (upper X-axis). The INTEGRAL observations are marked with circles, the RXTE observations – with triangles. The errors are at 1σ confidence level.
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