Swift J053041.9-665426, the new LMC X-ray transient, has a variable optical counterpart
Abstract
We have extracted the MACHO blue and red light-curves of the proposed counterpart of this new LMC X-ray transient, Swift J053041.9-665426. These cover the interval MJD49000-51600. The star is highly variable (by up to 0.3 mag) in both bands, and exhibits a ~415d candidate quasi-periodic modulation in the blue (although there are only approximately 4 cycles in the light-curve). Towards the end of the MACHO coverage (~MJD51400) the star has a large (~0.3mag) outburst that lasts ~200d.
- Publication:
-
The Astronomer's Telegram
- Pub Date:
- November 2011
- Bibcode:
- 2011ATel.3751....1C
- Keywords:
-
- Optical;
- X-ray;
- Request for Observations;
- Binary;
- Transient