Recent Swift XRT Observations of GX 339-4
Abstract
Following the discovery of the unusual optical and X-ray flaring activity in GX 339-4 (ATel #1586), we analyzed the two recent Swift XRT observations of the source taken on 2008 June 20 and 24. GX 339-4 is clearly detected in both observations. The first observation is 1985 sec long and the spectrum can be fit with an absorbed power-law model with a hydrogen column density of (4.1+/-1.1)e21 cm^-2 and a photon index of 1.45+/-0.15.
- Publication:
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The Astronomer's Telegram
- Pub Date:
- June 2008
- Bibcode:
- 2008ATel.1588....1K
- Keywords:
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- X-ray;
- Black Holes;
- Transients