NICER X-ray activity indicates GX 339-4 rising in hard state
Abstract
GX 339-4 is a low-mass X-ray binary that goes into outburst cycles typically every 2-3 years. X-ray observations with Swift/BAT, MAXI/GSC (ATel #14351, #14367), NuSTAR (ATel #14352) and INTEGRAL (ATel #14354) suggested that the source entered a new outburst during the last week of January 2021 and is brightening.
- Publication:
-
The Astronomer's Telegram
- Pub Date:
- February 2021
- Bibcode:
- 2021ATel14384....1W
- Keywords:
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- Binary;
- Black Hole;
- Transient