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INTEGRAL detects renewed activity from the HMXB SWIFT J1816.7-1613

ATel #10087; G. Saral (ISDC, Switzerland), L. Sidoli (INAF-IASF Milano, Italy), J. Wilms (ECAP, Germany), K. Watanabe (FGCU, USA), E. Bozzo (ISDC, Switzerland)
on 17 Feb 2017; 17:32 UT
Distributed as an Instant Email Notice Transients
Credential Certification: E. Bozzo (enrico.bozzo@unige.ch)

Subjects: X-ray, Binary, Transient, Pulsar

Referred to by ATel #: 10088

During the observations performed in the direction of the Galactic Center from 2017 February 16 at 01:14 to February 16 at 17:33, INTEGRAL detected renewed activity from the HMXB SWIFT J1816.7-1613. This source has been preliminarily classified as a Be X-ray Binary by La Parola et al. (2014, MNRAS, 445, 119).

SWIFT J1816.7-1613 was detected by IBIS/ISGRI at a significance level of 8 sigma in the 20-40 keV energy band. The corresponding flux measured from the ISGRI mosaic was of 29.7+/-3.8 mCrab. At present, the detection significance is too low to obtain a meaningful spectrum.

Due to the large off-axis angle with respect to the satellite aim point (~16 deg), the source was outside the field-of-view of the lower energy instrument JEM-X for the entire observational period.

Further INTEGRAL observations of the Galactic Center are already planned for the coming weeks.