Fig. A.1.
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Results of the timing check made using three XMM-Newton observations of the Crab pulsar. Fermi counts were normalized to 1, and XMM-Newton counts were normalized to 3 for display purposes. Statistical error bars are included for both phaseograms. The potted vertical lines indicate the best-fit locations of the X-ray peak and higher γ-ray peak. No photon weights were applied.
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