Fig. 1
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Comparison of effective areas of all the X-ray missions used in this work. For XMM-Newton we show the combined EPIC effective area. For Chandra, we show the ACIS-I effective area as of 2022. For Swift we show the XRT effective area. For eROSITA we show the effective area from the combined seven telescopes. For ROSAT we show the PSPC effective area.
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