Spectral parameters of the 26Al-line region, selected for the optimal χ2 case and the optimal AIC case, and AICopt, respectively.
Notes. The units are 10−6 ph cm−2 s−1 keV−1, 1, 10−3 ph cm−2 s−1, keV, and keV for the continuum amplitude C0, the power-law index α, the line flux IL, the line centroid shift ΔEpeak = Epeak − Elab, and line width (FWHM) ΓL, respectively.
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