Optical studies of two LMC X-ray transients : RX J0544.1-7100 and RX J0520.5-6932

Details Optical studies of two LMC X-ray transients : RX J0544.1-7100 and RX J0520.5-6932 Optical studies of two LMC X-ray transients : RX J0544.1-7100 and RX J0520.5-6932

2001-01-11

arxiv.org/abs/astro-ph/0101192v1

Mon.Not.Roy.Astron.Soc. 324 (2001) 623

Astronomy and Astrophysics

Astrophysics

6 pages, 7 figures

Scientific paper

10.1046/j.1365-8711.2001.04327.x

We report observations which confirm the identities of the optical counterpart to the transient sources RX J0544.1-7100 and RX J0520.5-6932. The counterparts are suggested to be a 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 24.4d is seen in RX J0520.5-6932 from the OGLE data.

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