Optical studies of two LMC X-ray transients : RX J0544.1-7100 and RX J0520.5-6932
arXiv:astro-ph/0101192 · doi:10.1046/j.1365-8711.2001.04327.x
Abstract
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.
6 pages, 7 figures