INTEGRAL observations of renewed activity of Swift J1713.4-4219

ATel #13169; Onori F., Fiocchi M. (INAF-IAPS Roma, Italy), Sguera V. (INAF-OAS, Bologna, Italy), Knudsen M., Rasmussen H. J., Chenevez J. (DTU Space, Denmark), Bird A. J., Lepingwell V. A. (Univ. of Southampton, UK), Meremenskiy I. (IKI RAS), Bazzano A., Natalucci, L., Panessa, F., Ubertini P. (INAF-IAPS Roma, Italy), Masetti N. (INAF-OAS, Bologna, Italy)
on 7 Oct 2019; 15:21 UT
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Credential Certification: Francesca Onori (francesca.onori@inaf.it)

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During a recent INTEGRAL observation of the Galactic Plane Scan (PI: Dr. A. Bazzano), the IBIS/ISGRI instrument detected a bright X-ray source (13 sigma and 5 sigma in the 22-60 keV and 60-100 keV energy bands, respectively) at a position consistent with Swift J1713.4-4219. The source was discovered by Swift/BAT on 2009 Nov 13 (MJD 55148) in the 15-50 keV band. RXTE reported a hard spectrum in the 2.5-30 keV band, consistent with a black hole transient in the low/hard state (Krimm, H. A. et al., ATel #2300).
We detected Swift J1713.4-4219 with IBIS/ISGRI during scans performed in revolution 2144 (between 2019-10-03 16:52:57 UTC and 2019-10-04 09:20:32 UTC) in the 22-60 keV energy range at the position RA(J2000)=258.39 deg DEC(J2000)=-42.31 deg, 2.4' error radius with an effective exposure time of 4.2 ksec. The 22-60 keV flux was measured at 26+-2 mCrab. The source is also detected in the 60-100 keV band with a flux of 30+-6 mCrab.
We obtained a spectrum in the 30-100 keV range (exposure time 25 ksec) that is consistent with a power-law model (with a reduced chi2 of 0.9 for 18 degrees of freedom), Gamma=1.9+-0.3 and an extrapolated flux in 20-100 keV of ~4.7E-10 erg s-1 cm-2.
In JEM-X the source is detected only below 10 keV for 7.8 ksec at the best fit position RA(J2000)=258.40 deg, DEC(J2000)=-42.31 deg (error circle 2 arcmin). The measured intensity is 9 +/-3 mCrab between 3-10 keV.
All the data have been analyzed using the Offline Software Analysis version 11.0 (OSA11).
Results from the INTEGRAL Galactic Plane Scanning are publicly available at: http://gps.iaps.inaf.it