On August 2, 2013, Buxton et al. (Atel #5244) reported optical and near-infrared flaring of the canonical black hole X-ray binary (BHB) GX 339-4. An increase in the optical and infrared band usually indicates the onset of an X-ray outburst in BHBs. We requested X-ray observations of GX 339-4 with Swift/XRT and the first observation was performed on August 6, 2013 (03:23:59 UTC, MJD = 56510.1417) in PC mode (ObsID: 00032490012, total of ~1.1 ks).
|Original language||English (US)|
|Journal||The Astronomer's Telegram|
|State||Published - Aug 1 2013|
- Black Hole