Abstract
We report observations that confirm the identities of the optical counterparts to the transient sources RX J0544.1-7100 and RX J0520.5-6932. The counterparts are suggested to be B-type stars. Optical data from the observations carried out at ESO and SAAO, together with results from the OGLE data base, are presented. In addition, X-ray data from the RXTE All-Sky Monitor are investigated for long-term periodicities. A strong suggestion for a binary period of 24.4 d is seen in RX J0520.5-6932 from the OGLE data.
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Coe, M. J., Negueruela, I., Buckley, D. A. H., Haigh, N. J., & Laycock, S. G. T. (2001). Optical studies of two large magellanic cloud X-ray transients: RX J0544.1-7100 and RX J0520.5-6932. Monthly Notices of the Royal Astronomical Society, 324(3), 623–627. https://doi.org/10.1046/j.1365-8711.2001.04327.x
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