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IGR J17497-2821: a new hard X-ray transient detected by INTEGRAL.

ATel #885; Soldi S., Walter R., Eckert D., Balman S., Bazzano A., Beckmann V., Belloni T., Boggs S., Capitanio F., Chenevez J., Del Santo M., Diehl R., Donnarumma I., Goldoni P., Gotz D., Leyder J.-C., Mereghetti S., Paizis A., Pottschmidt K., Sidoli L., Tarana A., Tueller J., Watanabe K., Weidenspointner G.
on 18 Sep 2006; 13:49 UT
Distributed as an Instant Email Notice Transients
Credential Certification: Roland Walter (Roland.Walter@obs.unige.ch)

Subjects: X-ray, Gamma Ray, Transient

Referred to by ATel #: 886, 888, 889, 890, 891, 897, 900, 906, 907, 909, 914, 936, 1002

During the INTEGRAL Key Programme observations of the Galactic Centre region, the IBIS/ISGRI telescope detected the new hard X-ray transient IGR J17497-2821 at the position ra = 267.4277, dec = -28.3443. The source brightened above 25 mCrab (20-40 keV flux averaged over ~40 minutes) starting from 2006-09-17T00:35 (UTC), reaching 40 mCrab at the end of the revolution (2006-09-18T14:54). The source varies on time scales of less than one hour and is also detected above 40 keV. INTEGRAL will continue to monitor this region for the next week.