INTEGRAL detects renewed activity from IGR J11435-6109

M. Fiocchi*, J. Chenevez, V. Sguera, L. Sidoli, A. J. Bird, A. Bazzano, L. Natalucci, P. Ubertini

*Corresponding author for this work

Research output: Other contributionNet publication - Internet publicationResearch

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During a recent INTEGRAL public observation of Musca region, performed between 2015-12-11 17:54 and 2015-12-12 12:54 (UTC), renewed activity from the transient X-ray pulsar IGR J11435-6109 has been detected. The 22-60 keV IBIS/ISGRI flux corresponds to (10+/-1) mCrab with an effective exposure time of 18 ks. The source was within the field of view of JEM-X instruments for a net exposure time of 36 ks. In the combined JEM-X1 and JEM-X2 mosaic, it was detected at a flux level of 3.8+/-0.4 mCrab and 3.7+/-1.1 mCrab in the 3-10 keV and 10-25 keV energy ranges, respectively. We note the time of this detection is consistent with the epoch of expected maximum flux, assuming the ephemeris information reported in (ATel #377).
Original languageEnglish
Publication date15 Dec 2015
Publication statusPublished - 15 Dec 2015
SeriesThe Astronomer's telegram
NumberATel #8414


  • X-ray
  • Binary
  • Gamma Ray
  • Transient
  • Variables


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