Intensity profiles measured from the 0th order image taken during the Chandra/HETG observation of Markarian 3 (Sako et al. 2000). From top: E-W; bottom: N-S, Symbols indicate energy bands: empty circles: 0.5–3 keV; filled squares: 3–6 keV; filled triangles: 6–7 keV. The dotted lines indicate the point spread function. From the innermost to the outermost profiles in each panel: 0.5–3 keV, 3–6 keV, and 6 − 7 keV, respectively.
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