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Hard X-ray emission from the Ultra-luminous X-ray Source Swift J0243.6+6124 detected with INTEGRAL

ATel #16149; M. Fiocchi (IAPS/INAF) on behalf of the IBIS/GPS team
on 25 Jul 2023; 12:02 UT
Credential Certification: mariateresa fiocchi (mariateresa.fiocchi@inaf.it)

Subjects: X-ray, Gamma Ray, Binary, Transient

The Galactic ultraluminous X-ray source Swift J0243.6+6124 is in outburst as seen by NuSTAR (ATel #16139), NICER (ATel #15987), Swift/XRT (ATel #15984), MAXI/GSC (ATel #15983) and Very Large Array in the radio band (ATel #16101).

During the recent INTEGRAL Galactic Plane Scanning observations (PI: Angela Bazzano) this transient source has been observed during two revolutions performed between 2023-07-08 22:45:10 UTC and 2023-07-09 13:11:30 UTC (ontime of 22 ks) and between 2023-07-23 22:26:57 UTC and 2023-07-24 19:49:40 UTC (ontime of 47 ks).

This transient source has been detected with IBIS/ISGRI instrument in the hard X-ray energy band (28-60 keV) at a significance of 359-sigma (flux=897.0\pm2.5 mCrab, for an effective exposure time of 5.7 ks) and 160-sigma (flux=963.0\pm6.0 mCrab, for an effective exposure time of 1.1 ks) during the first and second observations, respectively.

All the data have been analyzed using the Offline Software Analysis version 11.2 (OSA11).

Results from the Galactic Plane Scanning are made publicly available at: http://gps.iaps.inaf.it