Results obtained from observation 0306170401 of IGR J18450-0435. Top: EPIC-pn light curve of the source in two energy bands and the corresponding HR (an adaptive rebinning was used to achieve a minimum S/N> 15 in each soft time bin). The letters in the middle panel indicate the different HR resolved spectra listed in Table A.1. The last two panels show the results obtained from the spectral fits to the HR-resolved spectral analysis (the measured absorption column density in units of 1022 cm-2 and the photon index Γ). Middle: hardness intensity diagram (HID). Bottom: contour plot showing the ranges spanned by the power-law photon index and the absorption column density measured from the most relevant time intervals for the spectral variations marked in the second plot from the top (in this case the intervals “O” and “S”).
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