The source is detected in the combined JEM-X mosaic at 25 sigma (effective exposure time 12.5 ksec) with average fluxes of 41+/-3 mCrab in the 3-10 keV energy band and 23+/-4 mCrab in the 10-25 keV energy band. The JEM-X spectrum is well fit by using a black-body model with a temperature of 1.7+/-0.2 keV and an absorption column density fixed to the Galactic value in the direction to the cluster, i.e. 6E21 cm^(-2). This gives a 3-10 keV flux of 6.0x10^(-10) ergs/cm^2/s.
No type-I X-ray bursts are visible in the JEM-X light-curve.
The source is not detected by IBIS/ISGRI. We estimated an upper limit on the source flux in the 20-40 keV energy band of 8 mCrab at 3 sigma confidence level (effective exposure time 11 ksec).
The next INTEGRAL observations in the direction of the source are planned for 20 March 2013.
|Publication date||13 Mar 2013|
|Publication status||Published - 13 Mar 2013|
|Series||The Astronomer's telegram|
- Globular cluster
- Neutron star