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Table 2

Principal characteristics of the X-ray spectrometer of Chandra-HETG, XARM-SXS, and Athena-XIFU at 7 keV.

Instrument Resolving power Effective area
E/ ΔE [cm2]

Chandra HETGa 148 18
XARM SXSb 1750 225
Athena X-IFUc 2800 1600

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