ATel #7141: Outburst from the SFXT IGR J17544-2619 detected by INTEGRAL

A. Paizis*, E. Kuulkers, J. Chenevez, A. Bazzano, V. Beckmann, T. Bird, A. Bodaghee, M. Del Santo, A. Domingo, P. Jonker, P. Kretschmar, K. Pottschmidt, C. Markwardt, C. Sanchez-Fernandez, R. Wijnands

*Corresponding author for this work

Research output: Other contributionNet publication - Internet publicationResearch

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During public INTEGRAL Galactic bulge monitoring observations (ATel #438) performed on 2015 February 20-21 at UT 23:04-02:45, we detected the SFXT IGR J17544-2619 (see ATel #7137 for the recent Swift detection of the source outburst). The source was detected using IBIS/ISGRI in the 18-40 keV range at an average level of 24 +/- 2 mCrab (detection significance of 10 sigma) and using JEM-X at 26 +/- 4 mCrab (3-10 keV, 10 sigma) and 21 +/-6 mCrab (10-25 keV, 6 sigma). The source was detected neither in the previous INTEGRAL Galactic bulge observation (starting February 20, UT 07:41) nor in the following one (February 24, UT 23:52), compatible with the Swift/XRT non detection from February 24, UT 17:11 (ATel #7137). JEM-X upper limits for the non detections in the previous and following observations are about 5 mCrab (3-10 keV) and 2 mCrab (10-25 keV). The results of the INTEGRAL Galactic bulge monitoring program are publicly available at
Original languageEnglish
Publication date2015
VolumeATel #7141
Number of pages1
Publication statusPublished - 2015
SeriesThe Astronomer's telegram


  • X-ray
  • Binary
  • Neutron Star
  • Transient
  • Pulsar

Cite this

Paizis, A., Kuulkers, E., Chenevez, J., Bazzano, A., Beckmann, V., Bird, T., Bodaghee, A., Del Santo, M., Domingo, A., Jonker, P., Kretschmar, P., Pottschmidt, K., Markwardt, C., Sanchez-Fernandez, C., & Wijnands, R. (2015). ATel #7141: Outburst from the SFXT IGR J17544-2619 detected by INTEGRAL. The Astronomer's telegram