The binary period and outburst behaviour of the SMC
نویسندگان
چکیده
A probable binary period has been detected in the optical counterpart to the X-ray source CXOU J005455. The source is coincident with an Optical Gravitational Lensing (OGLE) object in the lightcurves of which several optical outburst peaks are visible at ∼ 268 day intervals. Timing analysis shows a period of 268.6 ± 0.1 days at > 99% significance. Archival Rossi X-ray Timing Explorer (RXTE) data for the 504s pulse-period has revealed detections which correspond closely with predicted or actual peaks in the optical data. The relationship between this orbital period and the pulse period of 504s is within the normal variance found in the Corbet diagram.
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