Fig. 1.
Left, from top: orbital light curves of HY Eri in the 1996 and January 2010 high states, November 2010 intermediate, and 2017 low state, binned to ∼2 min time resolution. Right, from top: binned ROSAT X-ray light curves measured with either the PSPC or the HRI as detectors and XMM-Newton light curve measured with the MOS and pn detectors of the EPIC camera.
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