| Table of ContentsX-ray Mission Cross Calibration Caveats G21.5-0.9 G21.5-0.9 Spectra - All G21.5-0.9 Confidence Contours - All G21.5-0.9 Spectra û EPIC/ACIS G21.5-0.9 Confidence Contours û EPIC/ACIS 1ES0102-72.3 1ES0102-72.3 Spectra - All 1ES0102-72.3 Spectra û MOS/ACIS MS1054.4-0321 MS1054.4-0321 Spectra MS1054.4-0321 Confidence Contours Relative Flux Summary Conclusions | Author: Steve Snowden |