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We report on the present stage of SN 1987A as observed by the Chandra X-rayObservatory. We reanalyze published Chandra observations and add three moreepochs of Chandra data to get a consistent picture of the evolution of theX-ray fluxes in several energy bands. We discuss the implications of severalcalibration issues for Chandra data. Using the most recent Chandra calibrationfiles, we find that the 0.5-2.0 keV band fluxes of SN 1987A have increased by~6 x 10 ^-13 erg s^-1 cm^-2 per year since 2009. This is in contrast with ourprevious result that the 0.5-2.0 keV light curve showed a sudden flattening in2009. Based on our new analysis, we conclude that the forward shock is still infull interaction with the equatorial ring.

Chandra observations of SN 1987A: the soft X-ray light curve revisited